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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_AcquisitionrelatedCostsRecognisedAsExpenseForTransactionRecognisedSeparatelyFromAcquisitionOfAssetsAndAssumptionOfLiabilitiesInBusinessCombination_1" xml:lang="en-US">Acquisition costs</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable_1" xml:lang="en-US">Accounts receivable</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_AdjustmentsForDeferredTaxExpense_1" xml:lang="en-US">Deferred income tax expense (recovery)</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_AdjustmentsForFairValueGainsLosses_0" xml:lang="en-US">Adjustments for fair value losses (gains)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_AdjustmentsForFairValueGainsLosses_1" xml:lang="en-US">Fair value adjustment on marketable securities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_AdjustmentsForFinanceCosts_0" xml:lang="en-US">Adjustments for finance costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_AdjustmentsForFinanceCosts_1" xml:lang="en-US">Finance charges</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities_0" xml:lang="en-US">Adjustments for increase (decrease) in employee benefit liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities_1" xml:lang="en-US">Share-based payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable_0" xml:lang="en-US">Adjustments for increase (decrease) in trade accounts payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable_1" xml:lang="en-US">Trade and other payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_AdjustmentsForInterestExpense_0" xml:lang="en-US">Interest expense</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_AdjustmentsForInterestExpense_2" xml:lang="en-US">Interest and accretion expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_AdjustmentsForReconcileProfitLossAbstract_0" xml:lang="en-US">Adjustments to reconcile profit (loss) [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_AdjustmentsForReconcileProfitLossAbstract_1" xml:lang="en-US">Items not affecting cash:</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod_0" xml:lang="en-US">Share of net income of Silverback</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod_1" xml:lang="en-US">Adjustments for undistributed profits of investments accounted for using equity method</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod_2" xml:lang="en-US">Share of net income of Silverback</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains_0" xml:lang="en-US">Adjustments for unrealised foreign exchange losses (gains)</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_AggregatedTimeBandsMember_0" xml:lang="en-US">Aggregated time bands [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_AllLevelsOfFairValueHierarchyMember_0" xml:lang="en-US">All levels of fair value hierarchy [member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_AmountsPayableRelatedPartyTransactions_1" xml:lang="en-US">Due to directors and management for remuneration and expense reimbursements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_AmountsRecognisedAsOfAcquisitionDateForEachMajorClassOfAssetsAcquiredAndLiabilitiesAssumedAbstract_0" xml:lang="en-US">Amounts recognised as of acquisition date for each major class of assets acquired and liabilities assumed [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_AmountsRecognisedAsOfAcquisitionDateForEachMajorClassOfAssetsAcquiredAndLiabilitiesAssumedAbstract_1" xml:lang="en-US">Net asset acquired</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_ApplicableTaxRate_1" xml:lang="en-US">Canadian federal and provincial income tax rates</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_AssetsAbstract_0" xml:lang="en-US">ASSETS</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_BasicEarningsLossPerShare_0" xml:lang="en-US">Basic earnings (loss) per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_BasicEarningsLossPerShare_1" xml:lang="en-US">Earnings (loss) per share - basic and diluted (in dollars per share)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_Borrowings_0" xml:lang="en-US">Loans payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_ifrs-full_Borrowings_1" xml:lang="en-US">Ending balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="lab_ifrs-full_Borrowings_2" xml:lang="en-US">Opening balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_Borrowings_3" xml:lang="en-US">Borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_Borrowings_4" xml:lang="en-US">Loans payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_BorrowingsInterestRate_0" xml:lang="en-US">Borrowings, interest rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_BorrowingsInterestRate_1" xml:lang="en-US">Stated rate percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_BottomOfRangeMember_0" xml:lang="en-US">Bottom of range [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_BottomOfRangeMember_1" xml:lang="en-US">Minimum</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_BusinessCombinationsAxis_0" xml:lang="en-US">Business combinations [axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_ifrs-full_Cash_0" xml:lang="en-US">Cash, end of year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="lab_ifrs-full_Cash_1" xml:lang="en-US">Cash, beginning of year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_Cash_2" xml:lang="en-US">Cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_Cash_3" xml:lang="en-US">Cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_ifrs-full_CashAndCashEquivalentsRecognisedAsOfAcquisitionDate_0" xml:lang="en-US">Cash, end of year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="lab_ifrs-full_CashAndCashEquivalentsRecognisedAsOfAcquisitionDate_1" xml:lang="en-US">Cash, beginning of year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CashAndCashEquivalentsRecognisedAsOfAcquisitionDate_2" xml:lang="en-US">Cash and cash equivalents recognised as of acquisition date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_CashAndCashEquivalentsRecognisedAsOfAcquisitionDate_3" xml:lang="en-US">Cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_0" xml:lang="en-US">Cash flows from (used in) financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_1" xml:lang="en-US">Net cash provided by financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_2" xml:lang="en-US">Net cash provided by financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract_0" xml:lang="en-US">Cash flows from (used in) financing activities [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract_1" xml:lang="en-US">CASH FLOWS FROM FINANCING ACTIVITIES</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities_0" xml:lang="en-US">Cash flows from (used in) investing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities_1" xml:lang="en-US">Net cash used in investing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivitiesAbstract_0" xml:lang="en-US">Cash flows from (used in) investing activities [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivitiesAbstract_1" xml:lang="en-US">CASH FLOWS FROM INVESTING ACTIVITIES</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities_0" xml:lang="en-US">Cash flows from (used in) operating activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities_1" xml:lang="en-US">Net cash (used in) provided by operating activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract_0" xml:lang="en-US">Cash flows from (used in) operating activities [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract_1" xml:lang="en-US">CASH FLOWS FROM OPERATING ACTIVITIES</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CashTransferred_0" xml:lang="en-US">Cash transferred</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_CashTransferred_1" xml:lang="en-US">Total consideration in cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_CashTransferred_2" xml:lang="en-US">Cash paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CategoriesOfFinancialAssetsAbstract_0" xml:lang="en-US">Categories of financial assets [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_CategoriesOfFinancialAssetsAbstract_1" xml:lang="en-US">Financial assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CategoriesOfFinancialLiabilitiesAbstract_0" xml:lang="en-US">Categories of financial liabilities [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_CategoriesOfFinancialLiabilitiesAbstract_1" xml:lang="en-US">Financial liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CategoriesOfRelatedPartiesAxis_0" xml:lang="en-US">Categories of related parties [axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ClassesOfFinancialInstrumentsAxis_0" xml:lang="en-US">Classes of financial instruments [axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ClassesOfFinancialInstrumentsMember_0" xml:lang="en-US">Financial instruments, class [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ComponentsOfEquityAxis_0" xml:lang="en-US">Components of equity [axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract_0" xml:lang="en-US">Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract_1" xml:lang="en-US">Items that may be reclassified subsequently to profit and loss:</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ComprehensiveIncome_0" xml:lang="en-US">Comprehensive income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_ComprehensiveIncome_1" xml:lang="en-US">Total comprehensive loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_ComprehensiveIncome_2" xml:lang="en-US">Net income and comprehensive income for the year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ConsiderationPaidReceived_0" xml:lang="en-US">Consideration paid (received)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_ConsiderationPaidReceived_1" xml:lang="en-US">Considerations paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_ConsiderationPaidReceived_2" xml:lang="en-US">Considerations paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ContractualCapitalCommitments_0" xml:lang="en-US">Contractual capital commitments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_ContractualCapitalCommitments_1" xml:lang="en-US">Total contractual commitments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_CostOfSales_0" xml:lang="en-US">Cost of sales, excluding depletion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CostOfSales_1" xml:lang="en-US">Cost of sales</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_CostOfSales_2" xml:lang="en-US">Cost of sales</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_CostOfSales_3" xml:lang="en-US">Cost of sales, excluding depletion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CurrencyRiskMember_0" xml:lang="en-US">Currency risk [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_CurrencyRiskMember_1" xml:lang="en-US">Currency risk</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CurrentAssets_0" xml:lang="en-US">Current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_CurrentAssets_1" xml:lang="en-US">Total current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CurrentAssetsAbstract_0" xml:lang="en-US">Current assets [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_CurrentAssetsAbstract_1" xml:lang="en-US">Current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CurrentFinancialAssetsAtFairValueThroughProfitOrLossAbstract_0" xml:lang="en-US">Current financial assets at fair value through profit or loss [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_CurrentFinancialAssetsAtFairValueThroughProfitOrLossAbstract_1" xml:lang="en-US">Fair value through profit or loss:</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_CurrentLiabilities_0" xml:lang="en-US">Current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CurrentLiabilities_1" xml:lang="en-US">Current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_CurrentLiabilities_2" xml:lang="en-US">Total current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CurrentLiabilitiesAbstract_0" xml:lang="en-US">Current Liabilities [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_CurrentLiabilitiesAbstract_1" xml:lang="en-US">Current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CurrentPrepaidExpenses_0" xml:lang="en-US">Current prepaid expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_CurrentPrepaidExpenses_1" xml:lang="en-US">Prepaid expenses and other</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CurrentReceivablesFromTaxesOtherThanIncomeTax_0" xml:lang="en-US">Current receivables from taxes other than income tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_CurrentReceivablesFromTaxesOtherThanIncomeTax_1" xml:lang="en-US">GST and other tax recoverable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_CurrentTaxExpenseIncome_0" xml:lang="en-US">Current income tax recovery (expense)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CurrentTaxExpenseIncome_1" xml:lang="en-US">Current tax expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_CurrentTaxExpenseIncome_2" xml:lang="en-US">Current income tax expense (recovery)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_CurrentTaxLiabilitiesCurrent_0" xml:lang="en-US">Income taxes payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CurrentTaxLiabilitiesCurrent_1" xml:lang="en-US">Current tax liabilities, current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_CurrentTaxLiabilitiesCurrent_2" xml:lang="en-US">Taxes payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:label="lab_ifrs-full_CurrentTradeReceivables_0" xml:lang="en-US">Royalty and stream receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_CurrentTradeReceivables_1" xml:lang="en-US">Current trade receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_CurrentTradeReceivables_2" xml:lang="en-US">Receivables from provisional sales</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_CurrentTradeReceivables_3" xml:lang="en-US">Trade receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised_0" xml:lang="en-US">Unrecognized deferred tax assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised_1" xml:lang="en-US">Deductible temporary differences for which no deferred tax asset is recognised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised_2" xml:lang="en-US">Unrecognized deferred tax assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DeferredTaxAssets_0" xml:lang="en-US">Deferred tax assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_DeferredTaxAssets_1" xml:lang="en-US">Deferred tax assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DeferredTaxAssetsAndLiabilitiesAbstract_0" xml:lang="en-US">Deferred tax assets and liabilities [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_DeferredTaxExpenseIncome_0" xml:lang="en-US">Deferred income tax recovery (expense)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DeferredTaxExpenseIncome_1" xml:lang="en-US">Deferred tax expense (income)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_DeferredTaxExpenseIncome_2" xml:lang="en-US">Deferred income tax (expense) recovery</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_DeferredTaxExpenseIncome_3" xml:lang="en-US">Total income tax expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DeferredTaxExpenseIncome_4" xml:lang="en-US">Deferred income tax expense (recovery)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_DeferredTaxLiabilities_0" xml:lang="en-US">Deferred tax liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DeferredTaxLiabilities_1" xml:lang="en-US">Deferred tax liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_DeferredTaxLiabilities_2" xml:lang="en-US">Deferred income tax liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DeferredTaxLiabilities_3" xml:lang="en-US">Deferred tax liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:label="lab_ifrs-full_DeferredTaxLiabilityAsset_0" xml:lang="en-US">Net deferred income t ax liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DeferredTaxLiabilityAsset_1" xml:lang="en-US">Deferred tax liability (asset)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_DeferredTaxLiabilityAsset_2" xml:lang="en-US">Net deferred income tax asset (liability)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_DeferredTaxLiabilityAsset_3" xml:lang="en-US">Deferred income tax liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForEarningsPerShareExplanatory_0" xml:lang="en-US">Earnings (loss) per share [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForEarningsPerShareExplanatory_1" xml:lang="en-US">Earnings (loss) per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory_0" xml:lang="en-US">Basis of preparation and measurement [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory_1" xml:lang="en-US">Basis of preparation and measurement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory_0" xml:lang="en-US">Description of accounting policy for financial instruments [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory_1" xml:lang="en-US">Financial instruments</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DisclosureOfClassesOfShareCapitalExplanatory_1" xml:lang="en-US">SHARE CAPITAL</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsExplanatory_1" xml:lang="en-US">Schedule of detailed information about loans payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory_0" xml:lang="en-US">Disclosure of fair value of financial instruments [text block]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfFinancialInstrumentsAbstract_0" xml:lang="en-US">Disclosure of detailed information about financial instruments [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfFinancialInstrumentsExplanatory_0" xml:lang="en-US">Disclosure of financial instruments [text block]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfFinancialInstrumentsTable_0" xml:lang="en-US">Disclosure of detailed information about financial instruments [table]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedOtherEquityInstrumentsGrantedDuringPeriodExplanatory_1" xml:lang="en-US">Schedule of pricing model with weighted average assumptions for warrant issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedShareOptionsGrantedDuringPeriodExplanatory_0" xml:lang="en-US">Disclosure of indirect measurement of fair value of goods or services received, share options granted during period [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DisclosureOfIndirectMeasurementOfFairValueOfGoodsOrServicesReceivedShareOptionsGrantedDuringPeriodExplanatory_1" xml:lang="en-US">Schedule of pricing model with weighted average assumptions for share option granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory_0" xml:lang="en-US">Disclosure of information about key management personnel [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory_1" xml:lang="en-US">Schedule of transactions between related parties</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory_0" xml:lang="en-US">Disclosure of investments accounted for using equity method [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory_1" xml:lang="en-US">INVESTMENT IN SILVERBACK</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsExplanatory_1" xml:lang="en-US">Schedule of currency risk through assets and liabilities</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodExplanatory_0" xml:lang="en-US">Disclosure of non-adjusting events after reporting period [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodExplanatory_1" xml:lang="en-US">EVENTS AFTER THE REPORTING DATE</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable_0" xml:lang="en-US">Disclosure of non-adjusting events after reporting period [table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory_0" xml:lang="en-US">Disclosure of number and weighted average exercise prices of other equity instruments [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory_1" xml:lang="en-US">Schedule of number and weighted average exercise prices of restricted share units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatory_0" xml:lang="en-US">Disclosure of number and weighted average exercise prices of share options [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatory_1" xml:lang="en-US">Schedule of number and weighted average exercise prices of stock options</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems_0" xml:lang="en-US">Disclosure of quantitative information about right-of-use assets [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsTable_0" xml:lang="en-US">Disclosure of quantitative information about right-of-use assets [table]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsExplanatory_1" xml:lang="en-US">Schedule of range of exercise prices of outstanding share options</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems_0" xml:lang="en-US">Disclosure of range of exercise prices of outstanding share options [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsTable_0" xml:lang="en-US">Disclosure of range of exercise prices of outstanding share options [table]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems_0" xml:lang="en-US">Disclosure of associates [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable_0" xml:lang="en-US">Disclosure of associates [table]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable_0" xml:lang="en-US">Disclosure of temporary difference, unused tax losses and unused tax credits [table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory_0" xml:lang="en-US">Disclosure of trade and other payables [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory_1" xml:lang="en-US">TRADE AND OTHER PAYABLES</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory_0" xml:lang="en-US">Disclosure of trade and other receivables [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory_1" xml:lang="en-US">ACCOUNTS RECEIVABLE</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract_0" xml:lang="en-US">Disclosure of transactions between related parties [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_0" xml:lang="en-US">Disclosure of transactions between related parties [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_0" xml:lang="en-US">Disclosure of transactions between related parties [table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_DividendsPaidClassifiedAsFinancingActivities_0" xml:lang="en-US">Dividend paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DividendsPaidClassifiedAsFinancingActivities_1" xml:lang="en-US">Dividends paid, classified as financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_DividendsReceived_0" xml:lang="en-US">Distribution</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DividendsReceived_1" xml:lang="en-US">Dividends received</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DividendsReceivedFromAssociatesClassifiedAsInvestingActivities_0" xml:lang="en-US">Dividends received from associates, classified as investing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_DividendsReceivedFromAssociatesClassifiedAsInvestingActivities_1" xml:lang="en-US">Dividend received from Silverback</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_DividendsRecognisedAsDistributionsToOwnersOfParent_0" xml:lang="en-US">Dividend paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_DividendsRecognisedAsDistributionsToOwnersOfParent_1" xml:lang="en-US">Dividend paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents_0" xml:lang="en-US">Effect of exchange rate changes on cash and cash equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents_1" xml:lang="en-US">Effect of exchange rate changes on cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents_2" xml:lang="en-US">Effect of exchange rate changes on cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_EntitysTotalForBusinessCombinationsMember_0" xml:lang="en-US">Entity's total for business combinations [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_EntitysTotalForRelatedPartiesMember_0" xml:lang="en-US">Entity's total for related parties [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_EntitysTotalForSubsidiariesMember_0" xml:lang="en-US">Entity's total for subsidiaries [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_ifrs-full_Equity_0" xml:lang="en-US">Balance ending</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="lab_ifrs-full_Equity_1" xml:lang="en-US">Balance opening</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_Equity_2" xml:lang="en-US">Equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_Equity_3" xml:lang="en-US">Total equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_EquityAbstract_0" xml:lang="en-US">EQUITY</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_EquityAndLiabilities_0" xml:lang="en-US">Equity and liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_EquityAndLiabilities_1" xml:lang="en-US">TOTAL LIABILITIES AND EQUITY</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_EquityAndLiabilitiesAbstract_0" xml:lang="en-US">LIABILITIES AND EQUITY</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_EquityInterestsOfAcquirer_0" xml:lang="en-US">Equity interests of acquirer</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_EquityInterestsOfAcquirer_1" xml:lang="en-US">Common shares issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_EquityInterestsOfAcquirer_2" xml:lang="en-US">Value of common shares issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_EquityMember_0" xml:lang="en-US">Equity [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ExercisePriceOfOutstandingShareOptions2019_0" xml:lang="en-US">Exercise price of outstanding share options</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_ExercisePriceOfOutstandingShareOptions2019_1" xml:lang="en-US">Exercise price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ExpectedDividendAsPercentageShareOptionsGranted_0" xml:lang="en-US">Expected dividend as percentage, share options granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_ExpectedDividendAsPercentageShareOptionsGranted_1" xml:lang="en-US">Expected dividend yield</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees_0" xml:lang="en-US">Share-based payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees_1" xml:lang="en-US">Expense from share-based payment transactions with employees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees_2" xml:lang="en-US">Share-based payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_FinanceCosts_0" xml:lang="en-US">Finance costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_FinanceCosts_1" xml:lang="en-US">Finance charges</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_FinanceCosts_2" xml:lang="en-US">Finance charges</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_FinancialAssetsAtFairValue_0" xml:lang="en-US">Financial assets, at fair value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_FinancialAssetsAtFairValue_1" xml:lang="en-US">Financial assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_FinancialAssetsAvailableforsale_0" xml:lang="en-US">Financial assets available-for-sale</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_FinancialAssetsAvailableforsale_1" xml:lang="en-US">Marketable securities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_FinancialAssetsRecognisedAsOfAcquisitionDate_0" xml:lang="en-US">Financial assets recognised as of acquisition date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_FinancialAssetsRecognisedAsOfAcquisitionDate_1" xml:lang="en-US">Marketable securities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_FinancialLiabilitiesAtAmortisedCost_0" xml:lang="en-US">Financial liabilities at amortised cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_FinancialLiabilitiesAtAmortisedCost_1" xml:lang="en-US">Financial liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationNetOfTax_0" xml:lang="en-US">Gains (losses) on exchange differences on translation, net of tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationNetOfTax_1" xml:lang="en-US">Foreign currency translation adjustment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationNetOfTax_2" xml:lang="en-US">Currency translation adjustments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss_0" xml:lang="en-US">Foreign exchange gain (loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss_1" xml:lang="en-US">Foreign exchange gain (loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss_2" xml:lang="en-US">Foreign exchange loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss_3" xml:lang="en-US">Foreign exchange gain (loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_GainsLossesOnFairValueAdjustmentInvestmentProperty_0" xml:lang="en-US">Gains (losses) on fair value adjustment, investment property</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_GainsLossesOnFairValueAdjustmentInvestmentProperty_1" xml:lang="en-US">Fair value adjustment on marketable securities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsBeforeTax_0" xml:lang="en-US">Gains (losses) on remeasuring available-for-sale financial assets, before tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/commentaryGuidance" xlink:label="lab_ifrs-full_GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsBeforeTax_1" xml:lang="en-US">A positive or negative XBRL value can be entered for this element. Refer to the standard element label to determine the correct sign. Use a negative value for terms in brackets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsBeforeTax_2" xml:lang="en-US">Fair value adjustment on marketable securities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_GeneralAndAdministrativeExpense_0" xml:lang="en-US">General and administrative expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_GeneralAndAdministrativeExpense_1" xml:lang="en-US">General and administrative expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_GeneralAndAdministrativeExpense_2" xml:lang="en-US">General and administrative expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_GrossProfit_0" xml:lang="en-US">Gross profit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_GrossProfit_1" xml:lang="en-US">Gross profit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed_0" xml:lang="en-US">Identifiable assets acquired (liabilities assumed)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_IdentifiableAssetsAcquiredLiabilitiesAssumed_1" xml:lang="en-US">Net asset acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_IdentifiableIntangibleAssetsRecognisedAsOfAcquisitionDate_0" xml:lang="en-US">Identifiable intangible assets recognised as of acquisition date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_IdentifiableIntangibleAssetsRecognisedAsOfAcquisitionDate_1" xml:lang="en-US">Royalty Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_IncomeStatementAbstract_0" xml:lang="en-US">Profit or loss [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_IncomeTaxExpenseContinuingOperations_0" xml:lang="en-US">Current income tax expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_IncomeTaxExpenseContinuingOperations_1" xml:lang="en-US">Tax expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_IncomeTaxExpenseContinuingOperations_2" xml:lang="en-US">Current income tax expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_IncomeTaxExpenseContinuingOperations_3" xml:lang="en-US">Total income tax expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_0" xml:lang="en-US">Increase (decrease) in cash and cash equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_1" xml:lang="en-US">Change in cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_2" xml:lang="en-US">Change in cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments_0" xml:lang="en-US">Increase (decrease) through conversion of convertible instruments, equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments_1" xml:lang="en-US">Proceeds from issuance of common stock on conversion of debenture</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments_2" xml:lang="en-US">Conversion on loan payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughExerciseOfOptions_0" xml:lang="en-US">Exercise of stock options</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughExerciseOfWarrantsEquity_0" xml:lang="en-US">Exercise of share purchase and finder's warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_0" xml:lang="en-US">Share-based payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_1" xml:lang="en-US">Share-based payments expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_2" xml:lang="en-US">Share-based payments - stock options</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_InterestExpense_0" xml:lang="en-US">Interest expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_InterestExpense_1" xml:lang="en-US">Interest expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_InterestExpense_2" xml:lang="en-US">Interest expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_InterestPaidClassifiedAsFinancingActivities_0" xml:lang="en-US">Interest paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_InterestPaidClassifiedAsFinancingActivities_1" xml:lang="en-US">Interest paid, classified as financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_InterestReceivable_0" xml:lang="en-US">Interest receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_InterestReceivable_1" xml:lang="en-US">Unsecured interest receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_ifrs-full_InvestmentAccountedForUsingEquityMethod_0" xml:lang="en-US">Ending balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="lab_ifrs-full_InvestmentAccountedForUsingEquityMethod_1" xml:lang="en-US">Opening balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_InvestmentAccountedForUsingEquityMethod_2" xml:lang="en-US">Investments accounted for using equity method</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_InvestmentAccountedForUsingEquityMethod_3" xml:lang="en-US">Investment in Silverback</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_InvestmentPropertyAbstract_0" xml:lang="en-US">Investment property [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_InvestmentPropertyMember_0" xml:lang="en-US">Investment property [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_IssuedCapital_0" xml:lang="en-US">Issued capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_IssuedCapital_1" xml:lang="en-US">Share capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_IssuedCapitalMember_0" xml:lang="en-US">Issued capital [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_IssuedCapitalMember_1" xml:lang="en-US">Share capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensation_0" xml:lang="en-US">Key management personnel compensation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensation_1" xml:lang="en-US">Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment_0" xml:lang="en-US">Key management personnel compensation, share-based payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment_1" xml:lang="en-US">Share-based payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits_0" xml:lang="en-US">Key management personnel compensation, short-term employee benefits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits_1" xml:lang="en-US">Salary or fees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits_2" xml:lang="en-US">Management services</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_KeyManagementPersonnelOfEntityOrParentMember_0" xml:lang="en-US">Key management personnel of entity or parent [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_KeyManagementPersonnelOfEntityOrParentMember_1" xml:lang="en-US">Management</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_LaterThanFiveYearsMember_0" xml:lang="en-US">Later than five years [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_LaterThanFiveYearsMember_1" xml:lang="en-US">Over 5 years</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember_0" xml:lang="en-US">Later than one year and not later than three years [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember_1" xml:lang="en-US">1 to 3 years</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_LaterThanThreeYearsAndNotLaterThanFiveYearsMember_0" xml:lang="en-US">Later than three years and not later than five years [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_LaterThanThreeYearsAndNotLaterThanFiveYearsMember_1" xml:lang="en-US">4 to 5 years</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_LeaseLiabilities_0" xml:lang="en-US">Lease liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_LeaseLiabilities_1" xml:lang="en-US">Lease liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_Level1OfFairValueHierarchyMember_0" xml:lang="en-US">Level 1 of fair value hierarchy [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_Level1OfFairValueHierarchyMember_1" xml:lang="en-US">Level 1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_Level2OfFairValueHierarchyMember_0" xml:lang="en-US">Level 2 of fair value hierarchy [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_Level2OfFairValueHierarchyMember_1" xml:lang="en-US">Level 2</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_Level3OfFairValueHierarchyMember_0" xml:lang="en-US">Level 3 of fair value hierarchy [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_Level3OfFairValueHierarchyMember_1" xml:lang="en-US">Level 3</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_LevelsOfFairValueHierarchyAxis_0" xml:lang="en-US">Levels of fair value hierarchy [axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_Liabilities_0" xml:lang="en-US">Total liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:label="lab_ifrs-full_Liabilities_1" xml:lang="en-US">Total liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_Liabilities_2" xml:lang="en-US">Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_Liabilities_3" xml:lang="en-US">Total liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_LiabilitiesAbstract_0" xml:lang="en-US">LIABILITIES</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_LiabilitiesIncurred_0" xml:lang="en-US">Liabilities incurred</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_LiabilitiesIncurred_1" xml:lang="en-US">Convertible debenture payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_LoanCommitmentsMember_0" xml:lang="en-US">Loan commitments [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_LoanCommitmentsMember_1" xml:lang="en-US">Loans payable principal and interest payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_LongtermBorrowings_0" xml:lang="en-US">Non-current portion of non-current borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_LongtermBorrowings_1" xml:lang="en-US">Loans payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_LongtermBorrowings_2" xml:lang="en-US">Long term portion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_MaturityAxis_0" xml:lang="en-US">Maturity [axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_NetForeignExchangeLoss_0" xml:lang="en-US">Foreign exchange gain (loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NetForeignExchangeLoss_1" xml:lang="en-US">Net foreign exchange loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_NetForeignExchangeLoss_2" xml:lang="en-US">Foreign exchange loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NonadjustingEventsAfterReportingPeriodAxis_0" xml:lang="en-US">Non-adjusting events after reporting period [axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NonadjustingEventsMember_0" xml:lang="en-US">Non-adjusting events after reporting period [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NoncurrentAssets_0" xml:lang="en-US">Non-current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_NoncurrentAssets_1" xml:lang="en-US">Total non-current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NoncurrentAssetsAbstract_0" xml:lang="en-US">Non-current assets [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_NoncurrentAssetsAbstract_1" xml:lang="en-US">Non-current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NoncurrentLiabilities_0" xml:lang="en-US">Non-current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_NoncurrentLiabilities_1" xml:lang="en-US">Total non-current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NoncurrentLiabilitiesAbstract_0" xml:lang="en-US">Non-current liabilities [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_NoncurrentLiabilitiesAbstract_1" xml:lang="en-US">Non-current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NotLaterThanOneYearMember_0" xml:lang="en-US">Not later than one year [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_NotLaterThanOneYearMember_1" xml:lang="en-US">Less than 1 year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_0" xml:lang="en-US">Number of other equity instruments granted in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_1" xml:lang="en-US">Restricted share units granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_2" xml:lang="en-US">Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_0" xml:lang="en-US">Number of other equity instruments exercised or vested in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_1" xml:lang="en-US">Restricted share units Vested</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_2" xml:lang="en-US">Vested</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement_0" xml:lang="en-US">Number of other equity instruments expired in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement_1" xml:lang="en-US">Restricted share units Vested</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement_2" xml:lang="en-US">Vested</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_0" xml:lang="en-US">Number of other equity instruments outstanding in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_1" xml:lang="en-US">Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_2" xml:lang="en-US">Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_ifrs-full_NumberOfOutstandingShareOptions_0" xml:lang="en-US">Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="lab_ifrs-full_NumberOfOutstandingShareOptions_1" xml:lang="en-US">Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NumberOfOutstandingShareOptions_2" xml:lang="en-US">Number of share options outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_NumberOfOutstandingShareOptions_3" xml:lang="en-US">Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement_0" xml:lang="en-US">Number of share options exercisable in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement_1" xml:lang="en-US">Exercisable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_NumberOfShareOptionsExercisableInSharebasedPaymentArrangement_2" xml:lang="en-US">Stock options exercisable in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_NumberOfShareOptionsExercisedInSharebasedPaymentArrangement_0" xml:lang="en-US">Exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NumberOfShareOptionsExercisedInSharebasedPaymentArrangement_1" xml:lang="en-US">Number of share options exercised in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_NumberOfShareOptionsExercisedInSharebasedPaymentArrangement_2" xml:lang="en-US">Number of share options exercised in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_NumberOfShareOptionsExpiredInSharebasedPaymentArrangement_0" xml:lang="en-US">Canceled/Expired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NumberOfShareOptionsExpiredInSharebasedPaymentArrangement_1" xml:lang="en-US">Number of share options expired in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NumberOfShareOptionsGrantedInSharebasedPaymentArrangement_0" xml:lang="en-US">Number of share options granted in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_NumberOfShareOptionsGrantedInSharebasedPaymentArrangement_1" xml:lang="en-US">Stock options granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_NumberOfShareOptionsGrantedInSharebasedPaymentArrangement_2" xml:lang="en-US">Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NumberOfSharesIssued_0" xml:lang="en-US">Number of shares issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_NumberOfSharesIssued_1" xml:lang="en-US">Number of shares issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_NumberOfSharesIssued_2" xml:lang="en-US">Common shares issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_ifrs-full_NumberOfSharesOutstanding_0" xml:lang="en-US">Balance ending (shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="lab_ifrs-full_NumberOfSharesOutstanding_1" xml:lang="en-US">Balance opening (shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_NumberOfSharesOutstanding_2" xml:lang="en-US">Number of shares outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_NumberOfSharesOutstanding_3" xml:lang="en-US">Common shares outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_OtherComprehensiveIncome_0" xml:lang="en-US">Other comprehensive income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_OtherComprehensiveIncome_1" xml:lang="en-US">Other comprehensive income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_OtherComprehensiveIncome_2" xml:lang="en-US">Other comprehensive income (loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_OtherComprehensiveIncomeAbstract_0" xml:lang="en-US">Other comprehensive income [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_OtherComprehensiveIncomeAbstract_1" xml:lang="en-US">Other comprehensive income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_0" xml:lang="en-US">Other comprehensive income, net of tax, exchange differences on translation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_1" xml:lang="en-US">Foreign currency translation adjustment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_OtherCurrentReceivables_0" xml:lang="en-US">Other current receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_OtherCurrentReceivables_1" xml:lang="en-US">Other receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_OtherReceivables_0" xml:lang="en-US">Other receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_OtherReceivables_1" xml:lang="en-US">Other receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_OtherReserves_0" xml:lang="en-US">Other reserves</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_OtherReserves_1" xml:lang="en-US">Reserves</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_OtherReservesMember_0" xml:lang="en-US">Other reserves [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_OtherReservesMember_1" xml:lang="en-US">Reserves</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_0" xml:lang="en-US">Other tax effects for reconciliation between accounting profit and tax expense (income)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_1" xml:lang="en-US">Other adjustments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ParValuePerShare_0" xml:lang="en-US">Par value per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_ParValuePerShare_1" xml:lang="en-US">Value per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_ParValuePerShare_2" xml:lang="en-US">Price per common share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_PaymentsForShareIssueCosts_0" xml:lang="en-US">Payments for share issue costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_PaymentsForShareIssueCosts_1" xml:lang="en-US">Aggregate common shares value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_Prepayments_0" xml:lang="en-US">Prepayments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_Prepayments_1" xml:lang="en-US">Prepaid expenses and deposits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_0" xml:lang="en-US">Proceeds from borrowings, classified as financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_1" xml:lang="en-US">Proceeds from promissory notes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ProceedsFromCurrentBorrowings_0" xml:lang="en-US">Proceeds from current borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_ProceedsFromCurrentBorrowings_1" xml:lang="en-US">Proceeds from loan arrangements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ProceedsFromExerciseOfOptions_0" xml:lang="en-US">Proceeds from exercise of options</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_ProceedsFromExerciseOfOptions_1" xml:lang="en-US">Proceeds from exercise of stock options</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ProceedsFromIssuingShares_0" xml:lang="en-US">Proceeds from issuing shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_ProceedsFromIssuingShares_1" xml:lang="en-US">Private placements, net of share issue costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_ProceedsFromIssuingShares_2" xml:lang="en-US">Gross proceeds from secondary offering</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ProceedsFromNoncurrentBorrowings_0" xml:lang="en-US">Proceeds from non-current borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_ProceedsFromNoncurrentBorrowings_1" xml:lang="en-US">Proceeds from convertible loans facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:label="lab_ifrs-full_ProfitLoss_0" xml:lang="en-US">Loss for the year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ProfitLoss_1" xml:lang="en-US">Profit (loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_ProfitLoss_2" xml:lang="en-US">Net loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_ProfitLoss_3" xml:lang="en-US">Net loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ProfitLossBeforeTax_0" xml:lang="en-US">Profit (loss) before tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_ProfitLossBeforeTax_1" xml:lang="en-US">Loss before income taxes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_ProfitLossBeforeTax_2" xml:lang="en-US">Loss before income taxes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ProfitLossFromContinuingOperations_0" xml:lang="en-US">Profit (loss) from continuing operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_ProfitLossFromContinuingOperations_1" xml:lang="en-US">Loss from operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_0" xml:lang="en-US">Percentage of ownership interest in subsidiary</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_1" xml:lang="en-US">Percentage of ownership interest in subsidiary</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_PurchaseOfMiningAssets_0" xml:lang="en-US">Purchase of mining assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_PurchaseOfMiningAssets_1" xml:lang="en-US">Consideration in cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_RangeAxis_0" xml:lang="en-US">Range [axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_RangesMember_0" xml:lang="en-US">Ranges [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_0" xml:lang="en-US">Repayment of loan principal</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_1" xml:lang="en-US">Repayments of borrowings, classified as financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_RepaymentsOfCurrentBorrowings_0" xml:lang="en-US">Repayments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_RepaymentsOfCurrentBorrowings_1" xml:lang="en-US">Repayments of current borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_RepaymentsOfCurrentBorrowings_2" xml:lang="en-US">Repayment of loans</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_RepaymentsOfCurrentBorrowings_3" xml:lang="en-US">Repayments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_RetainedEarnings_0" xml:lang="en-US">Cumulative deficit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_RetainedEarnings_1" xml:lang="en-US">Retained earnings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_RetainedEarnings_2" xml:lang="en-US">Deficit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_RetainedEarningsMember_0" xml:lang="en-US">Retained earnings [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_RetainedEarningsMember_1" xml:lang="en-US">Deficit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_Revenue_0" xml:lang="en-US">Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_Revenue_1" xml:lang="en-US">Total revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_Revenue_2" xml:lang="en-US">Total revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_RevenueFromRoyalties_0" xml:lang="en-US">Royalty income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_RevenueFromRoyalties_1" xml:lang="en-US">Royalty</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_RightofuseAssets_0" xml:lang="en-US">Right-of-use assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_RightofuseAssets_1" xml:lang="en-US">Right-of-use asset</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_ShareIssueRelatedCost_0" xml:lang="en-US">Share issue costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ShareIssueRelatedCost_1" xml:lang="en-US">Share issue costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_ShareIssueRelatedCost_2" xml:lang="en-US">Share issue costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_ShareIssueRelatedCost_3" xml:lang="en-US">Share issue related cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod_0" xml:lang="en-US">Share of net income of Silverback</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod_1" xml:lang="en-US">Share of profit (loss) of associates accounted for using equity method</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod_2" xml:lang="en-US">Share of net income of Silverback</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod_3" xml:lang="en-US">Income in Silverback for the period/year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ShorttermBorrowings_0" xml:lang="en-US">Current borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_ShorttermBorrowings_1" xml:lang="en-US">Loans payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_ShorttermBorrowings_2" xml:lang="en-US">Less: current portion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:label="lab_ifrs-full_ShorttermBorrowings_3" xml:lang="en-US">Current portion of loans payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_SignificantInvestmentsInSubsidiariesAxis_0" xml:lang="en-US">Subsidiaries [axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_StatementOfCashFlowsAbstract_0" xml:lang="en-US">Statement of cash flows [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_StatementOfChangesInEquityAbstract_0" xml:lang="en-US">Statement of changes in equity [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_StatementOfChangesInEquityLineItems_0" xml:lang="en-US">Statement of changes in equity [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_StatementOfChangesInEquityTable_0" xml:lang="en-US">Statement of changes in equity [table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_StatementOfFinancialPositionAbstract_0" xml:lang="en-US">Statement of financial position [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_SubsidiariesMember_0" xml:lang="en-US">Subsidiaries [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_SubsidiariesMember_1" xml:lang="en-US">Silverback Ltd. ("Silverback")</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss_0" xml:lang="en-US">Tax effect of expense not deductible in determining taxable profit (tax loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss_1" xml:lang="en-US">Permanent differences</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TaxEffectOfForeignTaxRates_0" xml:lang="en-US">Tax effect of foreign tax rates</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_TaxEffectOfForeignTaxRates_1" xml:lang="en-US">Difference between Canadian and foreign tax rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TaxExpenseIncomeAtApplicableTaxRate_0" xml:lang="en-US">Tax expense (income) at applicable tax rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_TaxExpenseIncomeAtApplicableTaxRate_1" xml:lang="en-US">Expected income tax expense (recovery) at statutory income tax rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis_0" xml:lang="en-US">Temporary difference, unused tax losses and unused tax credits [axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember_0" xml:lang="en-US">Temporary difference, unused tax losses and unused tax credits [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TopOfRangeMember_0" xml:lang="en-US">Top of range [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_TopOfRangeMember_1" xml:lang="en-US">Maximum</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TradeAndOtherCurrentPayables_0" xml:lang="en-US">Trade and other current payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_TradeAndOtherCurrentPayables_1" xml:lang="en-US">Accounts payable and accrued liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_TradeAndOtherCurrentPayables_2" xml:lang="en-US">Trade and other payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_TradeAndOtherCurrentPayables_3" xml:lang="en-US">Trade and other payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers_0" xml:lang="en-US">Current trade payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers_1" xml:lang="en-US">Total trade and other payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers_2" xml:lang="en-US">Trade payables and accrued liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers_3" xml:lang="en-US">Accounts payable and accrued liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers_4" xml:lang="en-US">Trade payables and accrued liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TradeAndOtherCurrentReceivables_0" xml:lang="en-US">Trade and other current receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_TradeAndOtherCurrentReceivables_1" xml:lang="en-US">Total Accounts Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_TradeAndOtherCurrentReceivables_2" xml:lang="en-US">Accounts receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_TradeAndOtherPayables_0" xml:lang="en-US">Trade payables and accrued liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TradeAndOtherPayables_1" xml:lang="en-US">Trade and other payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_TradeAndOtherPayables_2" xml:lang="en-US">Accounts payable and accrued liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_ifrs-full_TradeAndOtherPayables_3" xml:lang="en-US">Trade and other payables (Note 6)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_TradeAndOtherPayables_4" xml:lang="en-US">Trade payables and accrued liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TradeAndOtherPayablesAbstract_0" xml:lang="en-US">Trade and other payables [abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_ifrs-full_TradeAndOtherPayablesRecognisedAsOfAcquisitionDate_0" xml:lang="en-US">Trade and other payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TradeAndOtherPayablesRecognisedAsOfAcquisitionDate_1" xml:lang="en-US">Trade and other payables recognised as of acquisition date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_TradeAndOtherPayablesRecognisedAsOfAcquisitionDate_2" xml:lang="en-US">Accounts payable and accrued liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_TradeAndOtherPayablesRecognisedAsOfAcquisitionDate_3" xml:lang="en-US">Accounts payable recognised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TradeAndOtherPayablesToTradeSuppliers_0" xml:lang="en-US">Trade payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_TradeAndOtherPayablesToTradeSuppliers_1" xml:lang="en-US">Payable on NuevaUnion acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TradeAndOtherReceivables_0" xml:lang="en-US">Trade and other receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_TradeAndOtherReceivables_1" xml:lang="en-US">Trade receivables and other</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TradeAndOtherReceivablesAbstract_0" xml:lang="en-US">Trade and other receivables [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TypesOfInvestmentPropertyAxis_0" xml:lang="en-US">Types of investment property [axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TypesOfRisksAxis_0" xml:lang="en-US">Types of risks [axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_TypesOfRisksMember_0" xml:lang="en-US">Risks [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_UndrawnBorrowingFacilities_0" xml:lang="en-US">Undrawn borrowing facilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_UndrawnBorrowingFacilities_1" xml:lang="en-US">Remaining subsequent advances of convertible loan facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_UndrawnBorrowingFacilities_2" xml:lang="en-US">Undrawn convertible loan facilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_ValueAtRisk_0" xml:lang="en-US">Value at risk</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement2019_0" xml:lang="en-US">Weighted average exercise price of other equity instruments expired in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement2019_1" xml:lang="en-US">Restricted share units vested</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement2019_0" xml:lang="en-US">Weighted average exercise price of other equity instruments granted in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement2019_1" xml:lang="en-US">Restricted share units granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019_0" xml:lang="en-US">Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019_1" xml:lang="en-US">Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement2019_2" xml:lang="en-US">Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentArrangement2019_0" xml:lang="en-US">Weighted average exercise price of share options exercised in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentArrangement2019_1" xml:lang="en-US">Exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentArrangement2019_2" xml:lang="en-US">Weighted average exercise price, Exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsExpiredInSharebasedPaymentArrangement2019_0" xml:lang="en-US">Weighted average exercise price of share options expired in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsExpiredInSharebasedPaymentArrangement2019_1" xml:lang="en-US">Expired/cancelled</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsExpiredInSharebasedPaymentArrangement2019_2" xml:lang="en-US">Weighted average exercise price, Canceled/Expired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement2019_0" xml:lang="en-US">Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement2019_1" xml:lang="en-US">Weighted average exercise price, Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement2019_0" xml:lang="en-US">Weighted average exercise price, Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement2019_1" xml:lang="en-US">Weighted average exercise price, Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement2019_2" xml:lang="en-US">Weighted average exercise price of share options outstanding in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_WeightedAverageFairValueAtMeasurementDateShareOptionsGranted_0" xml:lang="en-US">Weighted average fair value at measurement date, share options granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_WeightedAverageFairValueAtMeasurementDateShareOptionsGranted_1" xml:lang="en-US">Weighted average fair value per option granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_ifrs-full_WeightedAverageFairValueAtMeasurementDateShareOptionsGranted_2" xml:lang="en-US">Weighted average price per options granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019_0" xml:lang="en-US">Weighted average remaining contractual life of outstanding share options</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions2019_1" xml:lang="en-US">Weighted average remaining life of stock options outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_ifrs-full_WeightedAverageShares_0" xml:lang="en-US">Weighted average number of ordinary shares outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_ifrs-full_WeightedAverageShares_1" xml:lang="en-US">Weighted average number of shares outstanding - basic and diluted (in shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AccelerationQualityOfWarrantsIssued_0" xml:lang="en-US">Acceleration Quality Of Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AccelerationQualityOfWarrantsIssued_1" xml:lang="en-US">Acceleration Quality Of Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AccelerationQualityOfWarrantsIssued_2" xml:lang="en-US">Acceleration quality of warrants issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AccretionAndOtherExpenses_0" xml:lang="en-US">Accretion And Other Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AccretionAndOtherExpenses_1" xml:lang="en-US">Amount of accretion and other expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_AccretionAndOtherExpenses_2" xml:lang="en-US">Accretion and other expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_mtaff_AccretionAndOtherExpenses_3" xml:lang="en-US">Accretion and other expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AccumulatedDepletionRoyaltyAndStreamInterests_0" xml:lang="en-US">Accumulated depletion Royalty and stream interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_mtaff_AccumulatedDepletionRoyaltyAndStreamInterests_1" xml:lang="en-US">Accumulated depletion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AccumulatedDepletionRoyaltyAndStreamInterests_2" xml:lang="en-US">Accumulated Depletion Royalty And Stream Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AccumulatedDepletionRoyaltyAndStreamInterests_3" xml:lang="en-US">Accumulated depletion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AcquisitionCostsForRoyaltyInterests_0" xml:lang="en-US">Acquisition costs for royalty interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AcquisitionCostsForRoyaltyInterests_1" xml:lang="en-US">Acquisition Costs For Royalty Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AcquisitionCostsForRoyaltyInterests_2" xml:lang="en-US">Acquisition costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AcquisitionsOfRoyaltiesAndStreamsMember_0" xml:lang="en-US">Acquisitions Of Royalties And Streams [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AcquisitionsOfRoyaltiesAndStreamsMember_1" xml:lang="en-US">Represents payments related to acquisitions of royalties and streams member.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AcquisitionsOfRoyaltiesAndStreamsMember_2" xml:lang="en-US">Payments related to acquisitions of royalties and streams</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AdditionalConvertibleLoanFacilityToFundFutureAcquisitions_0" xml:lang="en-US">Additional Convertible Loan Facility To Fund Future Acquisitions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AdditionalConvertibleLoanFacilityToFundFutureAcquisitions_1" xml:lang="en-US">Represents amount of additional convertible loan facility to fund future acquisitions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AdditionalConvertibleLoanFacilityToFundFutureAcquisitions_2" xml:lang="en-US">New total convertible loan facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AdditionalNetSmelterReturnPercentage_0" xml:lang="en-US">Additional net smelter return percentage.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AdditionalNetSmelterReturnPercentage_1" xml:lang="en-US">Additional Net Smelter Return Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AdditionalNetSmelterReturnPercentage_2" xml:lang="en-US">Additional net smelter return</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AdditionsToLoanPayable_0" xml:lang="en-US">Represents amount of additions to loan payable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AdditionsToLoanPayable_1" xml:lang="en-US">Additions To Loan Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AdditionsToLoanPayable_2" xml:lang="en-US">Additions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AdjustmentsForDepletionOnStreamInterest_0" xml:lang="en-US">Adjustments for depletion on stream interest to reconcile profit (loss) to net cash flow from (used in) operating activities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AdjustmentsForDepletionOnStreamInterest_1" xml:lang="en-US">Adjustments For Depletion On Stream Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_AdjustmentsForDepletionOnStreamInterest_2" xml:lang="en-US">Depletion and amortization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AdjustmentsOfItemsNotAffectingCash_0" xml:lang="en-US">Amount of adjustments for items not affecting cash.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AdjustmentsOfItemsNotAffectingCash_1" xml:lang="en-US">Adjustments Of Items Not Affecting Cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_mtaff_AdjustmentsOfItemsNotAffectingCash_2" xml:lang="en-US">Total items before changes in non-cash working capital items</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AdjustmentsOfItemsNotAffectingCash_3" xml:lang="en-US">Adjustments of items not affecting cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AdoptionOfIFRS16LeasesAxis_0" xml:lang="en-US">Adoption Of IFRS 16 Leases [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AdoptionOfIFRS16LeasesAxis_1" xml:lang="en-US">Information of adoption of IFRS 16 leases.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AdoptionOfIFRS16LeasesDomain_0" xml:lang="en-US">Adoption Of IFRS 16 Leases [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AdoptionOfIFRS16LeasesDomain_1" xml:lang="en-US">Information of adoption of IFRS 16 leases.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AdoptionOfIFRS16LeasesMember_0" xml:lang="en-US">Adoption Of IFRS 16 Leases [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AdoptionOfIFRS16LeasesMember_1" xml:lang="en-US">Information of adoption of IFRS 16 leases.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_AdoptionOfIFRS16LeasesMember_2" xml:lang="en-US">Adoption of IFRS 16 Leases</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AggregateOriginationDiscount_0" xml:lang="en-US">Represents amount of aggregate origination discount.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AggregateOriginationDiscount_1" xml:lang="en-US">Aggregate Origination Discount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AggregateOriginationDiscount_2" xml:lang="en-US">Aggregate origination discount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AggregateValueOfAcquisitionsOfRoyaltyInterests_0" xml:lang="en-US">The amount of aggregate value of acquisitions of royalty interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AggregateValueOfAcquisitionsOfRoyaltyInterests_1" xml:lang="en-US">Aggregate Value Of Acquisitions Of Royalty Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AggregateValueOfAcquisitionsOfRoyaltyInterests_2" xml:lang="en-US">Aggregate value of acquisitions of royalty interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AggregateValueOfCommonSharesAndConvertibleDebentureForNetAssetsAcquired_0" xml:lang="en-US">The amount of aggregate value of common shares and convertible debenture for net assets acquired, as non-cash investing and financing activities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AggregateValueOfCommonSharesAndConvertibleDebentureForNetAssetsAcquired_1" xml:lang="en-US">Aggregate Value Of Common Shares And Convertible Debenture For Net Assets Acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AggregateValueOfCommonSharesAndConvertibleDebentureForNetAssetsAcquired_2" xml:lang="en-US">Aggregate value of common shares and convertible debenture for net assets acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AgnicoEagleMinesLimitedMember_0" xml:lang="en-US">Agnico Eagle Mines Limited ("Agnico")</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AgnicoEagleMinesLimitedMember_1" xml:lang="en-US">Agnico Eagle Mines Limited [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AgnicoEagleMinesLimitedMember_2" xml:lang="en-US">Agnico Eagle Mines Limited ("Agnico")</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AgreementWithNuEnergyGasLimitedMember_0" xml:lang="en-US">Agreement With Nu Energy Gas Limited [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AgreementWithNuEnergyGasLimitedMember_1" xml:lang="en-US">Represents information of agreement with NuEnergy Gas Limited.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AgreementWithNuEnergyGasLimitedMember_2" xml:lang="en-US">Agreement with NuEnergy Gas Limited</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AkasabaWestAcquisitionMember_0" xml:lang="en-US">Akasaba West acquisition.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AkasabaWestAcquisitionMember_1" xml:lang="en-US">Akasaba West Acquisition [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AkasabaWestAcquisitionMember_2" xml:lang="en-US">Akasaba West acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AlamosAcquisitionsMember_0" xml:lang="en-US">Alamos acquisitions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AlamosAcquisitionsMember_1" xml:lang="en-US">Alamos Acquisitions [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AlamosAcquisitionsMember_2" xml:lang="en-US">Alamos acquisitions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AlamosRoyaltyInterestsMember_0" xml:lang="en-US">Alamos royalty interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AlamosRoyaltyInterestsMember_1" xml:lang="en-US">Alamos Royalty Interests [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AlamosRoyaltyInterestsMember_2" xml:lang="en-US">Alamos Royalty Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_AlamosRoyaltyInterestsMember_3" xml:lang="en-US">Development assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AmountOfAdditionalInterestAcquired_0" xml:lang="en-US">Represents amount of additional interest acquired.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AmountOfAdditionalInterestAcquired_1" xml:lang="en-US">Amount Of Additional Interest Acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AmountOfAdditionalInterestAcquired_2" xml:lang="en-US">Additional interest acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AmountPaidOnSigningOfAgreement_0" xml:lang="en-US">Represents amount paid on at the time of signing of agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AmountPaidOnSigningOfAgreement_1" xml:lang="en-US">Amount Paid On Signing Of Agreement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_AmountPaidOnSigningOfAgreement_2" xml:lang="en-US">Amount Paid on signing of agreement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AngloZekeNsrMember_0" xml:lang="en-US">Anglo/Zeke Nsr [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AngloZekeNsrMember_1" xml:lang="en-US">This member stands for Anglo/Zeke.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AngloZekeNsrMember_2" xml:lang="en-US">Anglo/Zeke</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_AverageGradeOfGoldGramPerTonne_0" xml:lang="en-US">It represents average grade of gold gram per tonne.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_AverageGradeOfGoldGramPerTonne_1" xml:lang="en-US">Average Grade Of Gold Gram Per Tonne</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_AverageGradeOfGoldGramPerTonne_2" xml:lang="en-US">Average grade of gold (in gram per tonne)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_BeedieCapitalMember_0" xml:lang="en-US">Beedie Capital [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_BeedieCapitalMember_1" xml:lang="en-US">Represents information of Beedie Capital.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_BeedieCapitalMember_2" xml:lang="en-US">Beedie</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_BeedieMember_0" xml:lang="en-US">Beedie [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_BeedieMember_1" xml:lang="en-US">This member stands for Beedie.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_BeedieMember_2" xml:lang="en-US">Beedie</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_BiricuNsrMember_0" xml:lang="en-US">Biricu Nsr [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_BiricuNsrMember_1" xml:lang="en-US">This member stands for Biricu.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_BiricuNsrMember_2" xml:lang="en-US">Biricu</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_BuyBackRightPercentage_0" xml:lang="en-US">Percentage for buy-back right.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_BuyBackRightPercentage_1" xml:lang="en-US">Buy Back Right Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_BuyBackRightPercentage_2" xml:lang="en-US">Buy-back right percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_CapOesteSurEastAcquisitionMember_0" xml:lang="en-US">Cap-Oeste Sur East acquisition.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_CapOesteSurEastAcquisitionMember_1" xml:lang="en-US">Cap Oeste Sur East Acquisition [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_CapOesteSurEastAcquisitionMember_2" xml:lang="en-US">Cap-Oeste Sur East acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_CashAndCommonSharesPaid_0" xml:lang="en-US">Cash And Common Shares Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_CashAndCommonSharesPaid_1" xml:lang="en-US">Represents amount of cash and common shares paid.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_CashAndCommonSharesPaid_2" xml:lang="en-US">Cash and common shares paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_CashFlowsUsedForAcquisitionsOfRoyaltyAndStreamInterests_0" xml:lang="en-US">The aggregate cash flows used in acquisitions of royalty and stream interests, classified as investing activities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_mtaff_CashFlowsUsedForAcquisitionsOfRoyaltyAndStreamInterests_1" xml:lang="en-US">Acquisitions of royalty and stream interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_CashFlowsUsedForAcquisitionsOfRoyaltyAndStreamInterests_2" xml:lang="en-US">Cash Flows Used For Acquisitions Of Royalty And Stream Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_CashFlowsUsedForAcquisitionsOfRoyaltyAndStreamInterests_3" xml:lang="en-US">Purchase price of acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_CashPaidSinceAcquisitionDate_0" xml:lang="en-US">Cash Paid Since Acquisition Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_CashPaidSinceAcquisitionDate_1" xml:lang="en-US">Represents amount of cash paid since the acquisition date.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_CashPaidSinceAcquisitionDate_2" xml:lang="en-US">Cash paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_CategoriesOfRoyaltyStreamsAndInterestsAxis_0" xml:lang="en-US">Categories of Royalty, streams and interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_CategoriesOfRoyaltyStreamsAndInterestsAxis_1" xml:lang="en-US">Categories Of Royalty, Streams And Interests [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain_0" xml:lang="en-US">Categories of Royalty, streams and interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_CategoriesOfRoyaltyStreamsAndInterestsDomain_1" xml:lang="en-US">Categories Of Royalty, Streams And Interests [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ChangesInNonCashWorkingCapitalItemsAbstract_0" xml:lang="en-US">Changes In Non Cash Working Capital Items [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ChangesInNonCashWorkingCapitalItemsAbstract_1" xml:lang="en-US">Changes in non-cash working capital items:</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_CoeurAcquisitionsMember_0" xml:lang="en-US">Coeur acquisitions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_CoeurAcquisitionsMember_1" xml:lang="en-US">Coeur Acquisitions [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_CoeurAcquisitionsMember_2" xml:lang="en-US">Coeur acquisitions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_CoeurDebentureMember_0" xml:lang="en-US">This member stands for Coeur Debenture.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_CoeurDebentureMember_1" xml:lang="en-US">Coeur Debenture [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_CoeurDebentureMember_2" xml:lang="en-US">Coeur debenture</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_CoeurMiningIncMember_0" xml:lang="en-US">Coeur Mining Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_CoeurMiningIncMember_1" xml:lang="en-US">Represents information of Coeur Mining, Inc.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_CoeurMiningIncMember_2" xml:lang="en-US">Coeur</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_CoeurStreamAndRoyaltyInterestsMember_0" xml:lang="en-US">Coeur stream and royalty interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_CoeurStreamAndRoyaltyInterestsMember_1" xml:lang="en-US">Coeur Stream And Royalty Interests [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_CoeurStreamAndRoyaltyInterestsMember_2" xml:lang="en-US">Coeur stream and royalty interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_CoeurStreamAndRoyaltyInterestsMember_3" xml:lang="en-US">Producing assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_CommitmentsLineItems_0" xml:lang="en-US">Commitments [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_CommitmentsTable_0" xml:lang="en-US">Commitments [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ConditionalAmountPayableUponAchievementOfCertainMilestones_0" xml:lang="en-US">Represents conditional amount payable upon achievement of certain milestones.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ConditionalAmountPayableUponAchievementOfCertainMilestones_1" xml:lang="en-US">Conditional Amount Payable Upon Achievement Of Certain Milestones</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ConditionalAmountPayableUponAchievementOfCertainMilestones_2" xml:lang="en-US">Conditional amount payable upon achievement of certain milestones</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ConditionOneMember_0" xml:lang="en-US">Condition One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ConditionOneMember_1" xml:lang="en-US">On signing/closing</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ConditionsAxis_0" xml:lang="en-US">Conditions [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ConditionsDomain_0" xml:lang="en-US">Conditions [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ConditionsThreeMember_0" xml:lang="en-US">Conditions Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ConditionsThreeMember_1" xml:lang="en-US">Upon the achievement of commercial production</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ConditionTwoMember_0" xml:lang="en-US">Condition Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ConditionTwoMember_1" xml:lang="en-US">One year after closing</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ContingentPaymentForConsiderationForLoanAgreement_0" xml:lang="en-US">Represents amount of contingent payment for consideration for loan agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ContingentPaymentForConsiderationForLoanAgreement_1" xml:lang="en-US">Contingent Payment For Consideration For Loan Agreement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ContingentPaymentForConsiderationForLoanAgreement_2" xml:lang="en-US">Contingent payment for consideration for loan agreement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ConversionOfLoanFacilityConvertedAmount_0" xml:lang="en-US">Conversion Of Loan Facility Converted Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ConversionOfLoanFacilityConvertedAmount_1" xml:lang="en-US">Represents the amount of convertible loan facility.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ConversionOfLoanFacilityConvertedAmount_2" xml:lang="en-US">Conversion Of loan facility, converted amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ConversionPricePerShare_0" xml:lang="en-US">Represents conversion price per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ConversionPricePerShare_1" xml:lang="en-US">Conversion Price Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ConversionPricePerShare_2" xml:lang="en-US">Conversion price per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ConvertibleDebenturePayable_0" xml:lang="en-US">Convertible debenture payable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ConvertibleDebenturePayable_1" xml:lang="en-US">Convertible Debenture Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ConvertibleDebenturePayable_2" xml:lang="en-US">Convertible debenture</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ConvertibleDebenturePayable_3" xml:lang="en-US">Convertible debenture payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ConvertibleLoanFacility_0" xml:lang="en-US">Represents the amount of convertible loan facility.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ConvertibleLoanFacility_1" xml:lang="en-US">Convertible Loan Facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ConvertibleLoanFacility_2" xml:lang="en-US">Convertible loan facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ConvertibleLoanFacilityDrewDown_0" xml:lang="en-US">The amount of convertible loan facility drew down.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ConvertibleLoanFacilityDrewDown_1" xml:lang="en-US">Convertible Loan Facility Drew Down</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ConvertibleLoanFacilityDrewDown_2" xml:lang="en-US">Initial advance drew down on facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ConvertibleLoanFacilityMember_0" xml:lang="en-US">Represents information of convertible loan facility.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ConvertibleLoanFacilityMember_1" xml:lang="en-US">Convertible Loan Facility [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ConvertibleLoanFacilityMember_2" xml:lang="en-US">Convertible Loan Facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ConvertibleLoanFacilityRemainingDrewDownFromOriginalLoanFacility_0" xml:lang="en-US">Convertible Loan Facility Remaining Drew Down From Original Loan Facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ConvertibleLoanFacilityRemainingDrewDownFromOriginalLoanFacility_1" xml:lang="en-US">Represents amount of remaining draw down from the original loan facility.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ConvertibleLoanFacilityRemainingDrewDownFromOriginalLoanFacility_2" xml:lang="en-US">Remaining drew down from original loan facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_CoseAcquisitionsMember_0" xml:lang="en-US">COSE acquisitions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_CoseAcquisitionsMember_1" xml:lang="en-US">Cose Acquisitions [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_CoseAcquisitionsMember_2" xml:lang="en-US">COSE acquisitions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_CoseAcquisitionsMember_3" xml:lang="en-US">Cap-Oeste Sur East (COSE) acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_COSERoyaltyMember_0" xml:lang="en-US">C O S E Royalty [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_COSERoyaltyMember_1" xml:lang="en-US">Represents cose royalty member.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_COSERoyaltyMember_2" xml:lang="en-US">COSE royalty</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_CurrencyTranslationAdjustmentsRelatedToBorrowings_0" xml:lang="en-US">Represents amount of currency translation adjustments related to borrowing.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_CurrencyTranslationAdjustmentsRelatedToBorrowings_1" xml:lang="en-US">Currency Translation Adjustments Related To Borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_CurrencyTranslationAdjustmentsRelatedToBorrowings_2" xml:lang="en-US">Currency translation adjustments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DeferredTaxAssetsAbstract_0" xml:lang="en-US">Deferred Tax Assets [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DeferredTaxAssetsAbstract_1" xml:lang="en-US">Deferred tax assets:</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DeferredTaxLiabilityRelatedToTaxableTemporaryDifferenceArisingFromEquityPortion_0" xml:lang="en-US">Deferred Tax Liability Related To Taxable Temporary Difference Arising From Equity Portion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DeferredTaxLiabilityRelatedToTaxableTemporaryDifferenceArisingFromEquityPortion_1" xml:lang="en-US">Represents deferred tax liability related to taxable temporary difference arising from equity portion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DeferredTaxLiabilityRelatedToTaxableTemporaryDifferenceArisingFromEquityPortion_2" xml:lang="en-US">Deferred tax liability related to taxable temporary difference arising from equity portion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DepletionOfRoyaltyAndStreamInterests_0" xml:lang="en-US">Depletion of Royalty and stream interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_mtaff_DepletionOfRoyaltyAndStreamInterests_1" xml:lang="en-US">Depletion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DepletionOfRoyaltyAndStreamInterests_2" xml:lang="en-US">Depletion Of Royalty And Stream Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DepletionOfRoyaltyAndStreamInterests_3" xml:lang="en-US">Depletion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DepletionOnStreamInterest_0" xml:lang="en-US">The amount of expenses arising form depletion on stream interest.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_mtaff_DepletionOnStreamInterest_1" xml:lang="en-US">Depletion on royalty and stream interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="lab_mtaff_DepletionOnStreamInterest_2" xml:lang="en-US">Depletion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DepletionOnStreamInterest_3" xml:lang="en-US">Depletion On Stream Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_DepletionOnStreamInterest_4" xml:lang="en-US">Depletion on stream interest (Note 4)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DepletionOnStreamInterest_5" xml:lang="en-US">Depletion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DesantisPropertiesMember_0" xml:lang="en-US">DeSantis properties.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DesantisPropertiesMember_1" xml:lang="en-US">Desantis Properties [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_DesantisPropertiesMember_2" xml:lang="en-US">DeSantis properties</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DescriptionOfAccountingPolicyForJointOperationsPolicyTextBlock_0" xml:lang="en-US">Description Of Accounting Policy For Joint Operations [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DescriptionOfAccountingPolicyForJointOperationsPolicyTextBlock_1" xml:lang="en-US">The description of the entity's accounting policy for joint operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DescriptionOfAccountingPolicyForJointOperationsPolicyTextBlock_2" xml:lang="en-US">Joint operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DescriptionOfAccountingPolicyForRelatedPartyTransactionsPolicyTextBlock_0" xml:lang="en-US">Description Of Accounting Policy For Related Party Transactions [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DescriptionOfAccountingPolicyForRelatedPartyTransactionsPolicyTextBlock_1" xml:lang="en-US">The description of the entity's accounting policy for related party transactions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DescriptionOfAccountingPolicyForRelatedPartyTransactionsPolicyTextBlock_2" xml:lang="en-US">Related party transactions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DescriptionOfAccountingPolicyForRoyaltyStreamAndOtherInterestsExplanatoryPolicyTextBlock_0" xml:lang="en-US">The description of the entity's accounting policy for royalty, stream, and other interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DescriptionOfAccountingPolicyForRoyaltyStreamAndOtherInterestsExplanatoryPolicyTextBlock_1" xml:lang="en-US">Description Of Accounting Policy For Royalty, Stream, And Other Interests Explanatory [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_DescriptionOfAccountingPolicyForRoyaltyStreamAndOtherInterestsExplanatoryPolicyTextBlock_2" xml:lang="en-US">Royalty, stream, and other interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DescriptionOfAccountingPronouncementsNotYetEffectivePolicyTextBlock_0" xml:lang="en-US">Information related to accounting pronouncements not yet effective.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DescriptionOfAccountingPronouncementsNotYetEffectivePolicyTextBlock_1" xml:lang="en-US">Description Of Accounting Pronouncements Not Yet Effective [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DescriptionOfAccountingPronouncementsNotYetEffectivePolicyTextBlock_2" xml:lang="en-US">Accounting pronouncements not yet effective</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DescriptionOfAccountingStandardsAdoptedDuringYearPolicyTextBlock_0" xml:lang="en-US">The disclosure of accounting standards adopted during the year.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DescriptionOfAccountingStandardsAdoptedDuringYearPolicyTextBlock_1" xml:lang="en-US">Description Of Accounting Standards Adopted During Year [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DescriptionOfAccountingStandardsAdoptedDuringYearPolicyTextBlock_2" xml:lang="en-US">Accounting standards adopted during the year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DescriptionOfShareConsolidationBasis_0" xml:lang="en-US">Represents information related to share consolidation basis.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DescriptionOfShareConsolidationBasis_1" xml:lang="en-US">Description Of Share Consolidation Basis</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DescriptionOfShareConsolidationBasis_2" xml:lang="en-US">Description of share consolidation basis</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DirectorsMember_0" xml:lang="en-US">Person serving on the board of directors (who collectively have responsibility for governing the entity).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DirectorsMember_1" xml:lang="en-US">Directors [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DirectorsMember_2" xml:lang="en-US">Directors</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfCommitmentAbstract_0" xml:lang="en-US">Disclosure Of Commitment [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfContractualCapitalCommitmentsTableTextBlock_0" xml:lang="en-US">Disclosure Of Contractual Capital Commitments [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DisclosureOfContractualCapitalCommitmentsTableTextBlock_1" xml:lang="en-US">Represents information related to contractual capital commitments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DisclosureOfContractualCapitalCommitmentsTableTextBlock_2" xml:lang="en-US">Schedule of information related to contractual obligations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DisclosureOfDetailedInformationAboutNetChangeInNonCashWorkingCapitalItemsExplanantoryTextBlock_0" xml:lang="en-US">The disclosure of additional information about net change in non-cash working capital items.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfDetailedInformationAboutNetChangeInNonCashWorkingCapitalItemsExplanantoryTextBlock_1" xml:lang="en-US">Disclosure Of Detailed Information About Net Change In Non Cash Working Capital Items Explanantory [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DisclosureOfDetailedInformationAboutNetChangeInNonCashWorkingCapitalItemsExplanantoryTextBlock_2" xml:lang="en-US">Schedule of detailed information about net change in non-cash working capital items</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DisclosureOfDetailedInformationAboutPurchasePriceAllocationForAcquisitionExplanatoryTextBlock_0" xml:lang="en-US">Disclosure Of Detailed Information About purchase price allocation for acquisition Explanatory.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfDetailedInformationAboutPurchasePriceAllocationForAcquisitionExplanatoryTextBlock_1" xml:lang="en-US">Disclosure Of Detailed Information About Purchase Price Allocation For Acquisition Explanatory [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DisclosureOfDetailedInformationAboutPurchasePriceAllocationForAcquisitionExplanatoryTextBlock_2" xml:lang="en-US">Schedule of detailed information about purchase price allocation for acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DisclosureOfDetailedInformationAboutRoyaltyInterestsAndDeferredAcquisitionCostsExplanatoryTextBlock_0" xml:lang="en-US">Disclosure Of Detailed Information About royalty interests and deferred acquisition costs explanatory.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfDetailedInformationAboutRoyaltyInterestsAndDeferredAcquisitionCostsExplanatoryTextBlock_1" xml:lang="en-US">Disclosure Of Detailed Information About Royalty Interests And Deferred Acquisition Costs Explanatory [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DisclosureOfDetailedInformationAboutRoyaltyInterestsAndDeferredAcquisitionCostsExplanatoryTextBlock_2" xml:lang="en-US">Schedule of detailed information about royalty interests and deferred acquisition costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DisclosureOfDetailedInformationAboutTradeAndOtherPayablesTableTextBlock_0" xml:lang="en-US">DisclosureOfDetailedInformationAboutTradeAndOtherPayablesTableTextBlock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfDetailedInformationAboutTradeAndOtherPayablesTableTextBlock_1" xml:lang="en-US">Disclosure Of Detailed Information About Trade And Other Payables [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DisclosureOfDetailedInformationAboutTradeAndOtherPayablesTableTextBlock_2" xml:lang="en-US">Schedule of trade and other payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DisclosureOfDetailedInformationAboutTradeAndOtherReceivablesExplanatoryTextBlock_0" xml:lang="en-US">Tabular disclosure of the trade receivable and the gross carrying value, allowance, and net carrying value as of the balance sheet date.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfDetailedInformationAboutTradeAndOtherReceivablesExplanatoryTextBlock_1" xml:lang="en-US">Disclosure Of Detailed Information About Trade And Other Receivables Explanatory [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DisclosureOfDetailedInformationAboutTradeAndOtherReceivablesExplanatoryTextBlock_2" xml:lang="en-US">Schedule of detailed information about trade and other receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfDetailedInformationAboutTradeAndOthersPayableAbstract_0" xml:lang="en-US">Disclosure Of Detailed Information About Trade And Others Payable [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DisclosureOfIncomeTaxExpenseReconciliationExplanatory_0" xml:lang="en-US">Disclosure of income tax expense reconciliation explanatory.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfIncomeTaxExpenseReconciliationExplanatory_1" xml:lang="en-US">Disclosure Of Income Tax Expense Reconciliation Explanatory</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DisclosureOfIncomeTaxExpenseReconciliationExplanatory_2" xml:lang="en-US">Schedule of income tax expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DisclosureOfLoansPayableLineItems_0" xml:lang="en-US">Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfLoansPayableLineItems_1" xml:lang="en-US">Disclosure Of Loans Payable [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfLoansPayableTable_0" xml:lang="en-US">Disclosure Of Loans Payable [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DisclosureOfNatureOfOperationsExplanatoryTextBlock_0" xml:lang="en-US">The disclosure of nature of operations.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfNatureOfOperationsExplanatoryTextBlock_1" xml:lang="en-US">Disclosure Of Nature Of Operations Explanatory [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DisclosureOfNatureOfOperationsExplanatoryTextBlock_2" xml:lang="en-US">NATURE OF OPERATIONS</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsRestrictedShareUnitsExplanatory_0" xml:lang="en-US">Disclosure Of Number And Weighted Average Exercise Prices Of Other Equity Instruments Restricted Share Units Explanatory</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsRestrictedShareUnitsExplanatory_1" xml:lang="en-US">The disclosure of the number and weighted average exercise prices of share options.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DisclosureOfRangeOfExercisePricesOfOutstandingWarrantsExplanatoryTableTextBlock_0" xml:lang="en-US">The disclosure of range of exercise prices of outstanding warrants explanatory.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfRangeOfExercisePricesOfOutstandingWarrantsExplanatoryTableTextBlock_1" xml:lang="en-US">Disclosure Of Range Of Exercise Prices Of Outstanding Warrants Explanatory [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_DisclosureOfRangeOfExercisePricesOfOutstandingWarrantsExplanatoryTableTextBlock_2" xml:lang="en-US">Schedule of range of exercise prices of outstanding warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsExplanatoryTextBlock_0" xml:lang="en-US">Disclosure of royalty interests and deferred acquisition costs explanatory.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsExplanatoryTextBlock_1" xml:lang="en-US">Disclosure Of Royalty Interests And Deferred Acquisition Costs Explanatory [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsExplanatoryTextBlock_2" xml:lang="en-US">ROYALTY, STREAM, AND OTHER INTERESTS</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_0" xml:lang="en-US">Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsLineItems_1" xml:lang="en-US">Disclosure Of Royalty Interests And Deferred Acquisition Costs [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable_0" xml:lang="en-US">Schedule disclosing information related to royalty interests and deferred acquisition costs.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfRoyaltyInterestsAndDeferredAcquisitionCostsTable_1" xml:lang="en-US">Disclosure Of Royalty Interests And Deferred Acquisition Costs [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfSignificantAccountingPoliciesAbstract_0" xml:lang="en-US">Disclosure Of Significant Accounting Policies [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DisclosureOfWarrantsActivityExplanatoryTextBlock_0" xml:lang="en-US">The disclosure of warrants activity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DisclosureOfWarrantsActivityExplanatoryTextBlock_1" xml:lang="en-US">Disclosure Of Warrants Activity Explanatory [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DisclosureOfWarrantsActivityExplanatoryTextBlock_2" xml:lang="en-US">Schedule of warrants activity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DocumentAndEntityInformationAbstract_0" xml:lang="en-US">Document And Entity Information [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_DufferinEastAcquisitionMember_0" xml:lang="en-US">Dufferin East acquisition.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_DufferinEastAcquisitionMember_1" xml:lang="en-US">Dufferin East Acquisition [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_DufferinEastAcquisitionMember_2" xml:lang="en-US">Aureus East acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_EffectiveInterestRateOnLiability_0" xml:lang="en-US">Effective interest rate on liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_EffectiveInterestRateOnLiability_1" xml:lang="en-US">Represents the effective interest rate on liability.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_EitherHoylePondMineOrWestTimminsMineMember_0" xml:lang="en-US">Represents either Hoyle Pond mine or West Timmins mine.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_EitherHoylePondMineOrWestTimminsMineMember_1" xml:lang="en-US">Either Hoyle Pond Mine Or West Timmins Mine [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_EitherHoylePondMineOrWestTimminsMineMember_2" xml:lang="en-US">Either Hoyle Pond mine or West Timmins mine</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ElRealitoNsrMember_0" xml:lang="en-US">El Realito NSR.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ElRealitoNsrMember_1" xml:lang="en-US">El Realito Nsr [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ElRealitoNsrMember_2" xml:lang="en-US">El Realito</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ElRealitoNsrMember_3" xml:lang="en-US">El Realito NSR</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_EndeavorStreamInterestAsOfAcquisitionDate_0" xml:lang="en-US">Endeavor stream interest as of acquisition date.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_EndeavorStreamInterestAsOfAcquisitionDate_1" xml:lang="en-US">Endeavor Stream Interest As Of Acquisition Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_EndeavorStreamInterestAsOfAcquisitionDate_2" xml:lang="en-US">Endeavor stream interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_EquityIssuancePricePerShare_0" xml:lang="en-US">Equity Issuance Price Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_EquityIssuancePricePerShare_1" xml:lang="en-US">The nominal value per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_EquityIssuancePricePerShare_2" xml:lang="en-US">Equity issuance price per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_EstimatedDeliveryOfPayableSilver_0" xml:lang="en-US">Estimated delivery of payable silver.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_EstimatedDeliveryOfPayableSilver_1" xml:lang="en-US">Estimated Delivery Of Payable Silver</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_EstimatedDeliveryOfPayableSilver_2" xml:lang="en-US">Estimated delivery of payable silver</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_EventsAfterReportingPeriodMember_0" xml:lang="en-US">This member stand for events after reporting period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_EventsAfterReportingPeriodMember_1" xml:lang="en-US">Events After Reporting Period [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_EventsAfterReportingPeriodMember_2" xml:lang="en-US">EVENTS AFTER THE REPORTING DATE</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExceedingSilverPricePerOunce_0" xml:lang="en-US">Exceeding silver price per ounce.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExceedingSilverPricePerOunce_1" xml:lang="en-US">Exceeding Silver Price Per Ounce</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExceedingSilverPricePerOunce_2" xml:lang="en-US">Exceeding silver price per ounce</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExemptionOnGoldProduced_0" xml:lang="en-US">Exemption on gold produced.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExemptionOnGoldProduced_1" xml:lang="en-US">Exemption On Gold Produced</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExemptionOnGoldProduced_2" xml:lang="en-US">Exemption on gold produced</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExercisePriceOfWarrantsIssued_0" xml:lang="en-US">Represents exercise price of warrants issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExercisePriceOfWarrantsIssued_1" xml:lang="en-US">Exercise Price Of Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExercisePriceOfWarrantsIssued_2" xml:lang="en-US">Exercise price of warrants issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExercisePriceOfWarrantsIssuedWithinUnits_0" xml:lang="en-US">Represents the exercise price of warrants which are issued as part of a unit.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExercisePriceOfWarrantsIssuedWithinUnits_1" xml:lang="en-US">Exercise Price Of Warrants Issued Within Units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExercisePriceOfWarrantsIssuedWithinUnits_2" xml:lang="en-US">Exercise price of warrants issued within units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpectedDividendAsPercentageWarrantsGranted_0" xml:lang="en-US">The percentage of an expected dividend used to calculate the fair value of warrants granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpectedDividendAsPercentageWarrantsGranted_1" xml:lang="en-US">Expected Dividend As Percentage Warrants Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExpectedDividendAsPercentageWarrantsGranted_2" xml:lang="en-US">Expected dividend yield</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpectedLifeOfLiability_0" xml:lang="en-US">Expected Life Of Liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpectedLifeOfLiability_1" xml:lang="en-US">Represent the expected life of liability.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExpectedLifeOfLiability_2" xml:lang="en-US">Expected life of liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpectedLifeOfWarrantsGranted_0" xml:lang="en-US">Expected life of warrants granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpectedLifeOfWarrantsGranted_1" xml:lang="en-US">Expected Life Of Warrants Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExpectedLifeOfWarrantsGranted_2" xml:lang="en-US">Expected life in years</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpectedVolatilityWarrantsGranted_0" xml:lang="en-US">Represents expected volatility of warrants granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpectedVolatilityWarrantsGranted_1" xml:lang="en-US">Expected Volatility Warrants Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExpectedVolatilityWarrantsGranted_2" xml:lang="en-US">Expected stock price volatility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateAugust112021Member_0" xml:lang="en-US">It indicates expiry date as Aug 11, 2021.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateAugust112021Member_1" xml:lang="en-US">Expiry Date August 11, 2021 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ExpiryDateAugust112021Member_2" xml:lang="en-US">Aug 11, 2021</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExpiryDateAugust112021Member_3" xml:lang="en-US">Aug 11, 2021</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateAugust302021Member_0" xml:lang="en-US">It indicates expiry date as Aug 30, 2021.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateAugust302021Member_1" xml:lang="en-US">Expiry Date August 30, 2021 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ExpiryDateAugust302021Member_2" xml:lang="en-US">Aug 30, 2021</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExpiryDateAugust302021Member_3" xml:lang="en-US">Aug 30, 2021</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateAxis_0" xml:lang="en-US">The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateAxis_1" xml:lang="en-US">Expiry Date [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateDecember052020Member_0" xml:lang="en-US">It indicates expiry date as Dec 05, 2020.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateDecember052020Member_1" xml:lang="en-US">Expiry Date December 05 2020 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExpiryDateDecember052020Member_2" xml:lang="en-US">Dec 05, 2020</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateDecember212020Member_0" xml:lang="en-US">It indicates expiry date as Dec 21, 2020.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateDecember212020Member_1" xml:lang="en-US">Expiry Date December 21 2020 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ExpiryDateDecember212020Member_2" xml:lang="en-US">Dec 21, 2020</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateDecember212020OneMember_0" xml:lang="en-US">Expiry Date December 21 2020 One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateDecember212020OneMember_1" xml:lang="en-US">It indicates expiry date as Dec 21, 2020.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExpiryDateDecember212020OneMember_2" xml:lang="en-US">Dec 21, 2020</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateDomain_0" xml:lang="en-US">Definition :
It represents expiry date.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateDomain_1" xml:lang="en-US">Expiry Date [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateJan042024Member_0" xml:lang="en-US">It indicates expiry date as Jan 04, 2024	.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateJan042024Member_1" xml:lang="en-US">Expiry Date Jan 04 2024 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExpiryDateJan042024Member_2" xml:lang="en-US">Jan 04, 2024</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateJan152025Member_0" xml:lang="en-US">Expiry Date Jan 15 2025 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateJan152025Member_1" xml:lang="en-US">It indicates expiry date as Jan 15, 2025.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ExpiryDateJan152025Member_2" xml:lang="en-US">Jan 15, 2025</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateJanuary042021Member_0" xml:lang="en-US">It indicates expiry date as Jan 04, 2021	.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateJanuary042021Member_1" xml:lang="en-US">Expiry Date January 04 2021 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ExpiryDateJanuary042021Member_2" xml:lang="en-US">Jan 04, 2021</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateJanuary042021OneMember_0" xml:lang="en-US">Expiry Date January 04 2021 One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateJanuary042021OneMember_1" xml:lang="en-US">It indicates expiry date as Jan 04, 2021.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ExpiryDateJanuary042021OneMember_2" xml:lang="en-US">Jan 04, 2021</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateJul152021Member_0" xml:lang="en-US">It indicates expiry date as Jul 15, 2021.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateJul152021Member_1" xml:lang="en-US">Expiry Date Jul 15, 2021 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExpiryDateJul152021Member_2" xml:lang="en-US">Jul 15, 2021</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateJul312022Member_0" xml:lang="en-US">It indicates expiry date as Jul 31, 2022.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateJul312022Member_1" xml:lang="en-US">Expiry Date Jul 31, 2022 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExpiryDateJul312022Member_2" xml:lang="en-US">Jul 31, 2022</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateMar012023Member_0" xml:lang="en-US">It indicates expiry date as Mar 01, 2023.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateMar012023Member_1" xml:lang="en-US">Expiry Date Mar 01, 2023 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExpiryDateMar012023Member_2" xml:lang="en-US">Mar 01, 2023</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateMar062022Member_0" xml:lang="en-US">It indicates expiry date as Mar 06, 2022.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateMar062022Member_1" xml:lang="en-US">Expiry Date Mar 06, 2022 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExpiryDateMar062022Member_2" xml:lang="en-US">Mar 06, 2022</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateNov152021Member_0" xml:lang="en-US">It indicates expiry date as Nov 15, 2021.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateNov152021Member_1" xml:lang="en-US">Expiry Date Nov 15, 2021 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExpiryDateNov152021Member_2" xml:lang="en-US">Nov 15, 2021</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateNov302021Member_0" xml:lang="en-US">It indicates expiry date as Nov 30, 2021.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateNov302021Member_1" xml:lang="en-US">Expiry Date Nov 30, 2021 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExpiryDateNov302021Member_2" xml:lang="en-US">Nov 30, 2021</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateNovember082020Member_0" xml:lang="en-US">It indicates expiry date as Nov 08, 2020.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateNovember082020Member_1" xml:lang="en-US">Expiry Date November 08 2020 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ExpiryDateNovember082020Member_2" xml:lang="en-US">Nov 08, 2020</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateOctober062019Member_0" xml:lang="en-US">It indicates expiry date as Oct 06, 2019	.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateOctober062019Member_1" xml:lang="en-US">Expiry Date October 06 2019 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ExpiryDateOctober062019Member_2" xml:lang="en-US">Oct 06, 2019</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ExpiryDateSep182023Member_0" xml:lang="en-US">It indicates expiry date as Sep 18, 2023.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ExpiryDateSep182023Member_1" xml:lang="en-US">Expiry Date Sep 18 2023 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ExpiryDateSep182023Member_2" xml:lang="en-US">Sep 17, 2023</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_FairValueAtMeasurementDateShareOptionsGranted_0" xml:lang="en-US">Fair value at measurement date, share options granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_FairValueAtMeasurementDateShareOptionsGranted_1" xml:lang="en-US">Fair Value At Measurement Date Share Options Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_FairValueAtMeasurementDateShareOptionsGranted_2" xml:lang="en-US">Fair value at measurement date, share options granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_FairValueOfRestrictedShareUnitsGranted_0" xml:lang="en-US">Fair value of restricted share units granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_FairValueOfRestrictedShareUnitsGranted_1" xml:lang="en-US">Fair Value Of Restricted Share Units Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_FairValueOfRestrictedShareUnitsGranted_2" xml:lang="en-US">Restricted share units vested</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_FairValueOfRestrictedShareUnitsGranted_3" xml:lang="en-US">Fair value of restricted stock units granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_FairValueOfWarrantsIssued_0" xml:lang="en-US">Represents fair value of warrants issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_FairValueOfWarrantsIssued_1" xml:lang="en-US">Fair Value Of Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_FairValueOfWarrantsIssued_2" xml:lang="en-US">Fair value of warrants issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_FifteenMileStreamAcquisitionsMember_0" xml:lang="en-US">15 Mile Stream acquisitions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_FifteenMileStreamAcquisitionsMember_1" xml:lang="en-US">Fifteen Mile Stream Acquisitions [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_FifteenMileStreamAcquisitionsMember_2" xml:lang="en-US">Fifteen Mile Stream (FMS) acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_FiloAcquisitionsMember_0" xml:lang="en-US">Filo acquisitions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_FiloAcquisitionsMember_1" xml:lang="en-US">Filo Acquisitions [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_FiloAcquisitionsMember_2" xml:lang="en-US">Filo acquisitions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_FinancingBonusReceived_0" xml:lang="en-US">The amount of financing bonus received.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_FinancingBonusReceived_1" xml:lang="en-US">Financing Bonus Received</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_FinancingBonusReceived_2" xml:lang="en-US">Financing bonus received</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_FinderFeesPaid_0" xml:lang="en-US">The amount of finder fees paid.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_FinderFeesPaid_1" xml:lang="en-US">Finder Fees Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_FinderFeesPaid_2" xml:lang="en-US">Finder fees paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_FindersShareIssueRelatedCosts_0" xml:lang="en-US">Amount related to finders shares issue related costs.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_FindersShareIssueRelatedCosts_1" xml:lang="en-US">Finders Share Issue Related Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_FindersShareIssueRelatedCosts_2" xml:lang="en-US">Share issue costs, finder's shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_FindersWarrantsShareIssueRelatedCosts_0" xml:lang="en-US">Represents amount related to finders warrants shares issue related cost.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_FindersWarrantsShareIssueRelatedCosts_1" xml:lang="en-US">Finders Warrants Share Issue Related Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_FindersWarrantsShareIssueRelatedCosts_2" xml:lang="en-US">Share issue costs, finder's warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_GarrisonProjectNsrMember_0" xml:lang="en-US">Garrison project NSR.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_GarrisonProjectNsrMember_1" xml:lang="en-US">Garrison Project Nsr [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_GarrisonProjectNsrMember_2" xml:lang="en-US">Garrison</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_GarrisonProjectNsrMember_3" xml:lang="en-US">Garrison project NSR</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_HalfOfNetSmelterReturnAcquiredPercentage_0" xml:lang="en-US">Represents the percentage of half of net smelter return acquired.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_HalfOfNetSmelterReturnAcquiredPercentage_1" xml:lang="en-US">Half Of Net Smelter Return Acquired Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_HalfOfNetSmelterReturnAcquiredPercentage_2" xml:lang="en-US">Half of the NSR royalty</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_HighStreamCorpMember_0" xml:lang="en-US">High Stream Corp</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_HighStreamCorpMember_1" xml:lang="en-US">High Stream Corp [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_HighStreamCorpMember_2" xml:lang="en-US">High Stream Corp. ("High Stream")</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_HistoricalCostsRoyaltyAndStreamInterests_0" xml:lang="en-US">Historical costs Royalty and stream interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_HistoricalCostsRoyaltyAndStreamInterests_1" xml:lang="en-US">Historical Costs Royalty And Stream Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_HistoricalCostsRoyaltyAndStreamInterests_2" xml:lang="en-US">Historical costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_HolyePondExtensionPropertyMember_0" xml:lang="en-US">Holye Pond extension property.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_HolyePondExtensionPropertyMember_1" xml:lang="en-US">Holye Pond Extension Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_HolyePondExtensionPropertyMember_2" xml:lang="en-US">Holye Pond extension property</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IdahoResourcesCorpAcquisitionMember_0" xml:lang="en-US">Idaho Resources Corp Acquisition [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IdahoResourcesCorpAcquisitionMember_1" xml:lang="en-US">This member stands for Idaho Resources Corp. acquisition.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_IdahoResourcesCorpAcquisitionMember_2" xml:lang="en-US">Idaho Resources Corp. acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_IdahoResourcesCorpAcquisitionMember_3" xml:lang="en-US">IRC acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IepiAcquisitionsMember_0" xml:lang="en-US">IEPI acquisitions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IepiAcquisitionsMember_1" xml:lang="en-US">Iepi Acquisitions [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_IepiAcquisitionsMember_2" xml:lang="en-US">IEPI acquisitions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncomeTaxesAbstract_0" xml:lang="en-US">Income Taxes [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_IncomeTaxesAbstract_1" xml:lang="en-US">Difference between Canadian and foreign tax rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseInDeferredAcquisitionCosts_0" xml:lang="en-US">Amount related to deferred acquisition costs.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseInDeferredAcquisitionCosts_1" xml:lang="en-US">Increase Decrease In Deferred Acquisition Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_IncreaseDecreaseInDeferredAcquisitionCosts_2" xml:lang="en-US">Deferred acquisition costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseLoansPayableThroughIssuedOfWarrants_0" xml:lang="en-US">Amount represents information related to loans payable value increase decrease through issued of warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseLoansPayableThroughIssuedOfWarrants_1" xml:lang="en-US">Increase Decrease Loans Payable Through Issued Of Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_IncreaseDecreaseLoansPayableThroughIssuedOfWarrants_2" xml:lang="en-US">Warrants issued for loans payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreasePrepaidExpensesAndOther_0" xml:lang="en-US">Increase Decrease Prepaid Expenses And Other</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreasePrepaidExpensesAndOther_1" xml:lang="en-US">Represents amount related to prepaid expenses and other.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_IncreaseDecreasePrepaidExpensesAndOther_2" xml:lang="en-US">Prepaid expenses and other</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseSharesThroughConversionOnLoanPayable_0" xml:lang="en-US">Number of shares issued for conversion on loan payable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseSharesThroughConversionOnLoanPayable_1" xml:lang="en-US">Increase Decrease Shares Through Conversion On Loan Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_IncreaseDecreaseSharesThroughConversionOnLoanPayable_2" xml:lang="en-US">Conversion on loan payable (shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_IncreaseDecreaseSharesThroughConversionOnLoanPayable_3" xml:lang="en-US">Number of shares issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterest_0" xml:lang="en-US">Represents amount related to increase (decrease) through acquisition of royalty and stream interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterest_1" xml:lang="en-US">Increase Decrease Through Acquisition Of Royalty And Stream Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterest_2" xml:lang="en-US">Acquisition of royalty and other interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterests_0" xml:lang="en-US">Acquisition of royalty and other interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterests_1" xml:lang="en-US">Increase Decrease Through Acquisition Of Royalty And Stream Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterests_2" xml:lang="en-US">Increase Decrease Through Acquisition Of Royalty And Stream Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterestsInShares_0" xml:lang="en-US">Represents number of share related to acquisition of royalty and stream interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterestsInShares_1" xml:lang="en-US">Increase Decrease Through Acquisition Of Royalty And Stream Interests In Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyAndStreamInterestsInShares_2" xml:lang="en-US">Acquisition of royalty and other interests (shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyInterests_0" xml:lang="en-US">Represents amount related to increase (decrease) through acquisition of royalty interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyInterests_1" xml:lang="en-US">Increase Decrease Through Acquisition Of Royalty Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_IncreaseDecreaseThroughAcquisitionOfRoyaltyInterests_2" xml:lang="en-US">Acquisition of royalty interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseThroughAllocationOfConversionFeature_0" xml:lang="en-US">Increase Decrease Through Allocation Of Conversion Feature</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseThroughAllocationOfConversionFeature_1" xml:lang="en-US">Represent the amount of increase decrease through allocation of conversion feature.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_IncreaseDecreaseThroughAllocationOfConversionFeature_2" xml:lang="en-US">Allocation of conversion feature net of taxes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseThroughExerciseOfOptionsShares_0" xml:lang="en-US">Proceeds from exercise of options (shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseThroughExerciseOfOptionsShares_1" xml:lang="en-US">Increase Decrease Through Exercise Of Options Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_IncreaseDecreaseThroughExerciseOfOptionsShares_2" xml:lang="en-US">Exercise of stock options (shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseThroughExerciseOfWarrantsEquityInShares_0" xml:lang="en-US">Represents number of share related to exercise of share purchase and finder's warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseThroughExerciseOfWarrantsEquityInShares_1" xml:lang="en-US">Increase Decrease Through Exercise Of Warrants Equity In Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_IncreaseDecreaseThroughExerciseOfWarrantsEquityInShares_2" xml:lang="en-US">Exercise of share purchase and finder's warrants (shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactions_0" xml:lang="en-US">Amount related to performance based payment transactions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactions_1" xml:lang="en-US">Increase Decrease Through Performance Based Payment Transactions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactions_2" xml:lang="en-US">Value of shares issued for performance based share based payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactions_3" xml:lang="en-US">Performance-based share-based payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactionsInShare_0" xml:lang="en-US">Represents number of share related to performance based payments transactions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactionsInShare_1" xml:lang="en-US">Increase Decrease Through Performance Based Payment Transactions In Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactionsInShare_2" xml:lang="en-US">Number of common shares issued for performance based share based payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_IncreaseDecreaseThroughPerformanceBasedPaymentTransactionsInShare_3" xml:lang="en-US">Performance-based share-based payments (shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseThroughPrivatePlacementsAndShareIssuances_0" xml:lang="en-US">Amount represents for private placements and share issuances.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseThroughPrivatePlacementsAndShareIssuances_1" xml:lang="en-US">Increase Decrease Through Private Placements And Share Issuances</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_IncreaseDecreaseThroughPrivatePlacementsAndShareIssuances_2" xml:lang="en-US">Private placements and share issuances</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseThroughPrivatePlacementsAndShareIssuancesShares_0" xml:lang="en-US">Element represent number of shares related to private placement and shares issuances.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseThroughPrivatePlacementsAndShareIssuancesShares_1" xml:lang="en-US">Increase Decrease Through Private Placements And Share Issuances Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_IncreaseDecreaseThroughPrivatePlacementsAndShareIssuancesShares_2" xml:lang="en-US">Private placements and share issuances (shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseThroughShareBasedPaymentTransactionsOffsettingCreditOfReserves_0" xml:lang="en-US">Increase Decrease Through Share Based Payment Transactions Offsetting Credit Of Reserves</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseThroughShareBasedPaymentTransactionsOffsettingCreditOfReserves_1" xml:lang="en-US">The increase (decrease) in equity resulting from share-based payment transactions offsetting credit of reserves.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_IncreaseDecreaseThroughShareBasedPaymentTransactionsOffsettingCreditOfReserves_2" xml:lang="en-US">Share-based payments expense of offsetting credit reserves</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseThroughShareBasedPaymentTransactionsOffsettingCreditOfShareCapital_0" xml:lang="en-US">Increase Decrease Through Share Based Payment Transactions Offsetting Credit Of Share Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseThroughShareBasedPaymentTransactionsOffsettingCreditOfShareCapital_1" xml:lang="en-US">The increase (decrease) in equity resulting from share-based payment transactions for offsetting credit of share capital.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_IncreaseDecreaseThroughShareBasedPaymentTransactionsOffsettingCreditOfShareCapital_2" xml:lang="en-US">Share-based payments expense of offsetting credit share capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_IncreaseDecreaseThroughShareBasedPaymentTransactionsVestingTermsOfRSUGranted_0" xml:lang="en-US">Increase Decrease Through Share Based Payment Transactions Vesting Terms Of R S U Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_IncreaseDecreaseThroughShareBasedPaymentTransactionsVestingTermsOfRSUGranted_1" xml:lang="en-US">The increase (decrease) in equity resulting from share-based payment transactions for vesting terms of the RSUs granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_IncreaseDecreaseThroughShareBasedPaymentTransactionsVestingTermsOfRSUGranted_2" xml:lang="en-US">Share-based payments expense vesting terms of RSUs granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_InducementsToLoanPayable_0" xml:lang="en-US">Represents amount of inducements to loan payable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_InducementsToLoanPayable_1" xml:lang="en-US">Inducements To Loan Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_InducementsToLoanPayable_2" xml:lang="en-US">Inducements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_InflectionCapitalIncMember_0" xml:lang="en-US">Inflection Capital Inc</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_InflectionCapitalIncMember_1" xml:lang="en-US">Inflection Capital Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_InflectionCapitalIncMember_2" xml:lang="en-US">Inflection Capital Inc.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_InitialAdvanceDrewDownAllocatedToConversionFeature_0" xml:lang="en-US">Initial Advance Drew Down Allocated To Conversion Feature</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_InitialAdvanceDrewDownAllocatedToConversionFeature_1" xml:lang="en-US">Represents the initial advance drew down allocated to conversion feature.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_InitialAdvanceDrewDownAllocatedToConversionFeature_2" xml:lang="en-US">Allocation of conversion feature</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_mtaff_InitialAdvanceDrewDownAllocatedToConversionFeature_3" xml:lang="en-US">Allocation of conversion feature</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_InitialAdvanceDrewDownAllocatedToLiabilityPortion_0" xml:lang="en-US">Initial Advance Drew Down Allocated To Liability Portion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_InitialAdvanceDrewDownAllocatedToLiabilityPortion_1" xml:lang="en-US">Represents the initial advance drew down allocated to liability portion.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_InitialAdvanceDrewDownAllocatedToLiabilityPortion_2" xml:lang="en-US">Allocation to liability portion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_InitialAdvanceOfConvertibleLoanFacility_0" xml:lang="en-US">Represents amount of initial advance convertible loan facility.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_InitialAdvanceOfConvertibleLoanFacility_1" xml:lang="en-US">Initial Advance Of Convertible Loan Facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_InitialAdvanceOfConvertibleLoanFacility_2" xml:lang="en-US">Initial advance of convertible loan facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_InterestRateOnStandbyFundsAvailable_0" xml:lang="en-US">Represents interest rate on standby funds available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_InterestRateOnStandbyFundsAvailable_1" xml:lang="en-US">Interest Rate On Standby Funds Available</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_InterestRateOnStandbyFundsAvailable_2" xml:lang="en-US">Interest rate on standby funds available</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_JoaquinProjectMember_0" xml:lang="en-US">Joaquin project.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_JoaquinProjectMember_1" xml:lang="en-US">Joaquin Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_JoaquinProjectMember_2" xml:lang="en-US">Joaquin project</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_JoaquinRoyaltyMember_0" xml:lang="en-US">Joaquin Royalty [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_JoaquinRoyaltyMember_1" xml:lang="en-US">Represents Joaquin royalty member.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_JoaquinRoyaltyMember_2" xml:lang="en-US">Joaquin royalty</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_KirklandLakeGoldLtdMember_0" xml:lang="en-US">Kirkland Lake Gold Ltd [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_KirklandLakeGoldLtdMember_1" xml:lang="en-US">Represents information of Kirkland Lake Gold Ltd.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_KirklandLakeGoldLtdMember_2" xml:lang="en-US">Kirkland Lake Gold Ltd</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_LaFortunaNsrOptionMember_0" xml:lang="en-US">La Fortuna NSR option.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_LaFortunaNsrOptionMember_1" xml:lang="en-US">La Fortuna Nsr Option [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_LaFortunaNsrOptionMember_2" xml:lang="en-US">La Fortuna option</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_LaFortunaNsrOptionMember_3" xml:lang="en-US">La Fortuna NSR option</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_LegalEntitiesAxis_0" xml:lang="en-US">The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_LegalEntitiesAxis_1" xml:lang="en-US">Legal Entities [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_LegalEntitiesDomain_0" xml:lang="en-US">All the entities being reported upon in a document.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_LegalEntitiesDomain_1" xml:lang="en-US">Legal Entities [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_LoanAgreementSettled_0" xml:lang="en-US">Represents loan agreement settled.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_LoanAgreementSettled_1" xml:lang="en-US">Loan Agreement Settled</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_LoanAgreementSettled_2" xml:lang="en-US">Loan agreement settled</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_LoanAgreementsForAggregateAmount_0" xml:lang="en-US">Represents amount of aggregate loan agreements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_LoanAgreementsForAggregateAmount_1" xml:lang="en-US">Loan Agreements For Aggregate Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_LoanAgreementsForAggregateAmount_2" xml:lang="en-US">Loan agreements aggregate amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_LoanAgreementsWithLendersMember_0" xml:lang="en-US">Loan Agreements With Lenders [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_LoanAgreementsWithLendersMember_1" xml:lang="en-US">Four loan arrangements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_LoanPayableAbstract_0" xml:lang="en-US">Loan Payable [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_LoanPayableAxis_0" xml:lang="en-US">The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_LoanPayableAxis_1" xml:lang="en-US">Loan Payable [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_LoanPayableDomain_0" xml:lang="en-US">Loan Payable [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_LoanPayableLineItems_0" xml:lang="en-US">Loan Payable [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_LoanPayableTable_0" xml:lang="en-US">Schedule disclosing information related to loan payable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_LoanPayableTable_1" xml:lang="en-US">Loan Payable [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_LoansSettlement_0" xml:lang="en-US">Represents amount of settlements of loan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_mtaff_LoansSettlement_1" xml:lang="en-US">Settlements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_LoansSettlement_2" xml:lang="en-US">Loans Settlement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_LoansSettlement_3" xml:lang="en-US">Settlements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_LosPlatosProjectNsrMember_0" xml:lang="en-US">Los Platos project NSR.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_LosPlatosProjectNsrMember_1" xml:lang="en-US">Los Platos Project Nsr [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_LosPlatosProjectNsrMember_2" xml:lang="en-US">Los Platos</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_LosPlatosProjectNsrMember_3" xml:lang="en-US">Los Platos project NSR</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_LossOnSettlementOfLoanAgreement_0" xml:lang="en-US">Represents amount related to loss on settlement of loan agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_LossOnSettlementOfLoanAgreement_1" xml:lang="en-US">Loss On Settlement Of Loan Agreement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_LossOnSettlementOfLoanAgreement_2" xml:lang="en-US">Loss on settlement of loan agreement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_MarketableSecurities_0" xml:lang="en-US">Marketable Securities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_MarketableSecurities_1" xml:lang="en-US">It represents information about marketable securities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_MarketableSecurities_2" xml:lang="en-US">Marketable securities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_MarketableSecuritiesRecognisedAsOfAcquisitionDate_0" xml:lang="en-US">Marketable Securities Recognised As Of Acquisition Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_MarketableSecuritiesRecognisedAsOfAcquisitionDate_1" xml:lang="en-US">Represents amount of marketable securities recognised as of acquisition date.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_MarketableSecuritiesRecognisedAsOfAcquisitionDate_2" xml:lang="en-US">Marketable securities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_MatamecAcquisitionsMember_0" xml:lang="en-US">Matamec acquisitions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_MatamecAcquisitionsMember_1" xml:lang="en-US">Matamec Acquisitions [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_MatamecAcquisitionsMember_2" xml:lang="en-US">Matamec acquisitions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_MaximumCappingOfNetSmelterReturnNsr_0" xml:lang="en-US">Represents maximum amount of capping of NSR (NSR).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_MaximumCappingOfNetSmelterReturnNsr_1" xml:lang="en-US">Maximum Capping Of Net Smelter Return (Nsr)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_MaximumCappingOfNetSmelterReturnNsr_2" xml:lang="en-US">Maximum capping of NSR</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_MaximumCappingOfUnsecuredNetSmelterReturnNsr_0" xml:lang="en-US">Represents maximum amount of capping of unsecured NSR.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_MaximumCappingOfUnsecuredNetSmelterReturnNsr_1" xml:lang="en-US">Maximum Capping Of Unsecured Net Smelter Return (Nsr)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_MaximumCappingOfUnsecuredNetSmelterReturnNsr_2" xml:lang="en-US">Maximum capping of unsecured NSR</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_MineralExpendituresAndCapitalAssetsMember_0" xml:lang="en-US">This member stands for Mineral expenditures and capital assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_MineralExpendituresAndCapitalAssetsMember_1" xml:lang="en-US">Mineral Expenditures And Capital Assets [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_MineralExpendituresAndCapitalAssetsMember_2" xml:lang="en-US">Mineral expenditures and capital assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_MineraTritonArgentinaMember_0" xml:lang="en-US">Minera Triton Argentina.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_MineraTritonArgentinaMember_1" xml:lang="en-US">Minera Triton Argentina [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_MineraTritonArgentinaMember_2" xml:lang="en-US">Minera Triton Argentina</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_MinimumTranchesOfConvertibleLoanFacility_0" xml:lang="en-US">Represents amount of minimum tranches of convertible loan facility.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_MinimumTranchesOfConvertibleLoanFacility_1" xml:lang="en-US">Minimum Tranches Of Convertible Loan Facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_MinimumTranchesOfConvertibleLoanFacility_2" xml:lang="en-US">Minimum tranches of convertible loan facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_MiradoMineProjectMember_0" xml:lang="en-US">Mirado Mine Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_MiradoMineProjectMember_1" xml:lang="en-US">Mirado mine project (Mirado)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_MontclergPropertyMember_0" xml:lang="en-US">Montclerg property.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_MontclergPropertyMember_1" xml:lang="en-US">Montclerg Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_MontclergPropertyMember_2" xml:lang="en-US">Montclerg property</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NatureOfOperationsAbstract_0" xml:lang="en-US">Nature Of Operations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NetSmelterReturn_0" xml:lang="en-US">Net Smelter Return.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NetSmelterReturn_1" xml:lang="en-US">Net Smelter Return</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NetSmelterReturn_2" xml:lang="en-US">Net smelter return</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NetSmelterReturnAcquiredPercentage_0" xml:lang="en-US">Net Smelter Return (NSR) acquired percentage.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NetSmelterReturnAcquiredPercentage_1" xml:lang="en-US">Net Smelter Return Acquired Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_NetSmelterReturnAcquiredPercentage_2" xml:lang="en-US">Percentage of NSR royalty interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NetSmelterReturnAcquisitionRange_0" xml:lang="en-US">Description of Net smelter (NSR) acquisition rage.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NetSmelterReturnAcquisitionRange_1" xml:lang="en-US">Net Smelter Return Acquisition Range</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NetSmelterReturnAcquisitionRange_2" xml:lang="en-US">Net smelter return acquisition range, Description</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NonCapitalLossesAndOtherMember_0" xml:lang="en-US">This member stands for Non-capital losses and other.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NonCapitalLossesAndOtherMember_1" xml:lang="en-US">Non Capital Losses And Other [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_NonCapitalLossesAndOtherMember_2" xml:lang="en-US">Non-capital losses and others</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NonCapitalLossesAndOtherMember_3" xml:lang="en-US">Non-capital losses and other</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NuevaUnionAcquisitionMember_0" xml:lang="en-US">Nueva Union Acquisition [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NuevaUnionAcquisitionMember_1" xml:lang="en-US">This member stands for NuevaUnion acquisition.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NuevaUnionAcquisitionMember_2" xml:lang="en-US">NuevaUnion acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfBulkTonnageModel_0" xml:lang="en-US">It represents number of bulk tonnage model.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfBulkTonnageModel_1" xml:lang="en-US">Number Of Bulk Tonnage Model</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfBulkTonnageModel_2" xml:lang="en-US">Number of bulk tonnage model (in tonnes)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfCommonSharesAcquisition_0" xml:lang="en-US"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfCommonSharesAcquisition_1" xml:lang="en-US">Number Of Common Shares Acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_NumberOfCommonSharesAcquisition_2" xml:lang="en-US">Number of common shares acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfCommonSharesIssuedForAcquisitionsOfRoyaltyInterests_0" xml:lang="en-US">Represents the number of common shares issued for acquisitions of royalty interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfCommonSharesIssuedForAcquisitionsOfRoyaltyInterests_1" xml:lang="en-US">Number Of Common Shares Issued For Acquisitions Of Royalty Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_NumberOfCommonSharesIssuedForAcquisitionsOfRoyaltyInterests_2" xml:lang="en-US">Acquisition of royalty interests (in shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfCommonSharesIssuedForAcquisitionsOfRoyaltyInterests_3" xml:lang="en-US">Number of common shares issued for acquisitions of royalty interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfCommonSharesIssuedForNetAssetsAcquired_0" xml:lang="en-US">Represents the number of common shares issued for net assets acquired, as non-cash investing and financing activities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfCommonSharesIssuedForNetAssetsAcquired_1" xml:lang="en-US">Number Of Common Shares Issued For Net Assets Acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfCommonSharesIssuedForNetAssetsAcquired_2" xml:lang="en-US">Number of common shares and convertible debenture issued for net assets acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfCommonSharesIssuedForVestingOfRestrictedStockUnits_0" xml:lang="en-US">Number Of Common Shares Issued For Vesting Of Restricted Stock Units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfCommonSharesIssuedForVestingOfRestrictedStockUnits_1" xml:lang="en-US">Represents the number of common shares issued for vesting of restricted stock units.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfCommonSharesIssuedForVestingOfRestrictedStockUnits_2" xml:lang="en-US">Number of common shares issued for vesting of RSU's</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfCommonSharesReceivedForExchangeRatio_0" xml:lang="en-US">Represents number of common shares received for exchange ratio.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfCommonSharesReceivedForExchangeRatio_1" xml:lang="en-US">Number Of Common Shares Received For Exchange Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfCommonSharesReceivedForExchangeRatio_2" xml:lang="en-US">Number of common shares received for exchange ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfCommonSharesWarrantsIssuedAsDeferredAcquisitionCosts_0" xml:lang="en-US">Represents the number of common shares warrants issued as deferred acquisition costs.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfCommonSharesWarrantsIssuedAsDeferredAcquisitionCosts_1" xml:lang="en-US">Number Of Common Shares Warrants Issued As Deferred Acquisition Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_NumberOfCommonSharesWarrantsIssuedAsDeferredAcquisitionCosts_2" xml:lang="en-US">Deferred acquisition costs (in shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfCommonSharesWarrantsIssuedAsDeferredAcquisitionCosts_3" xml:lang="en-US">Number of common shares warrants issued as deferred acquisition costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfFindersWarrantsIssued_0" xml:lang="en-US">Represents the number of finders warrants issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfFindersWarrantsIssued_1" xml:lang="en-US">Number Of Finders Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_NumberOfFindersWarrantsIssued_2" xml:lang="en-US">Number of underwriter warrants issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfFindersWarrantsIssued_3" xml:lang="en-US">Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfInferredResourceInOunces_0" xml:lang="en-US">It represents number of inferred resource in ounces.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfInferredResourceInOunces_1" xml:lang="en-US">Number Of Inferred Resource In Ounces</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfInferredResourceInOunces_2" xml:lang="en-US">Number of inferred resource (in Ounces)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfNsrInterestsAcquired_0" xml:lang="en-US">Number of NSR interests acquired.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfNsrInterestsAcquired_1" xml:lang="en-US">Number Of Nsr Interests Acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfNsrInterestsAcquired_2" xml:lang="en-US">Number NSR interests acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfOutstandingWarrants_0" xml:lang="en-US">Number of warrants outstanding in share-based payment arrangement at beginning of period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_mtaff_NumberOfOutstandingWarrants_1" xml:lang="en-US">Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="lab_mtaff_NumberOfOutstandingWarrants_2" xml:lang="en-US">Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfOutstandingWarrants_3" xml:lang="en-US">Number Of Outstanding Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfOutstandingWarrants_4" xml:lang="en-US">Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfPostConsolidationCommonShares_0" xml:lang="en-US">Detail information about post consolidation common share result.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfPostConsolidationCommonShares_1" xml:lang="en-US">Number Of Post Consolidation Common Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfPostConsolidationCommonShares_2" xml:lang="en-US">Number of post-consolidation common shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfPreConsolidationCommonShares_0" xml:lang="en-US">Detail information about pre consolidation common share result.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfPreConsolidationCommonShares_1" xml:lang="en-US">Number Of Pre Consolidation Common Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_NumberOfPreConsolidationCommonShares_2" xml:lang="en-US">Number of pre-consolidation common shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfRoyaltyInterest_0" xml:lang="en-US">Number of royalty interest.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfRoyaltyInterest_1" xml:lang="en-US">Number Of Royalty Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfRoyaltyInterest_2" xml:lang="en-US">Number of royalty interest acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfSharePurchaseWarrantsExercised_0" xml:lang="en-US">Represents the number of share purchase warrants exercised.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_mtaff_NumberOfSharePurchaseWarrantsExercised_1" xml:lang="en-US">Number of share purchase warrants exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfSharePurchaseWarrantsExercised_2" xml:lang="en-US">Number Of Share Purchase Warrants Exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfSharePurchaseWarrantsExercised_3" xml:lang="en-US">Number of share purchase warrants exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfSharePurchaseWarrantsIssuedForAcquisitionsOfRoyaltyInterests_0" xml:lang="en-US">Represents the number of share purchase warrants issued for acquisitions of royalty interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfSharePurchaseWarrantsIssuedForAcquisitionsOfRoyaltyInterests_1" xml:lang="en-US">Number Of Share Purchase Warrants Issued For Acquisitions Of Royalty Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfSharePurchaseWarrantsIssuedForAcquisitionsOfRoyaltyInterests_2" xml:lang="en-US">Number of share purchase warrants issued for acquisitions of royalty interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfSharePurchaseWarrantsIssuedOnSettlementOfLoansPayable_0" xml:lang="en-US">The number of share purchase warrants issued on settlement of loans payable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfSharePurchaseWarrantsIssuedOnSettlementOfLoansPayable_1" xml:lang="en-US">Number Of Share Purchase Warrants Issued On Settlement Of Loans Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfSharePurchaseWarrantsIssuedOnSettlementOfLoansPayable_2" xml:lang="en-US">Number of share purchase warrants issued on settlement of loans payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfSharesInPublicOfferingPreviouslyHeld_0" xml:lang="en-US">Number Of Shares In Public Offering Previously Held</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfSharesInPublicOfferingPreviouslyHeld_1" xml:lang="en-US">The number of shares issued by the entity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfSharesInPublicOfferingPreviouslyHeld_2" xml:lang="en-US">Number of shares in public offering previously held</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriod_0" xml:lang="en-US">The number of shares issued during period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriod_1" xml:lang="en-US">Number Of Shares Issued During Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriod_2" xml:lang="en-US">Number of shares issued during period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriodForAcquisitionOfRoyaltyAndStreamInterests_0" xml:lang="en-US">Number Of Shares Issued During Period For Acquisition Of Royalty And Stream Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriodForAcquisitionOfRoyaltyAndStreamInterests_1" xml:lang="en-US">The number of shares issued during period for acquisition of royalty and stream interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriodForAcquisitionOfRoyaltyAndStreamInterests_2" xml:lang="en-US">Number of shares issued during period for acquisition of royalty and stream interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriodForConversionOfCoeurConvertibleDebenture_0" xml:lang="en-US">Number Of Shares Issued During Period For Conversion Of Coeur Convertible Debenture</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriodForConversionOfCoeurConvertibleDebenture_1" xml:lang="en-US">The number of shares issued during period for conversion of Coeur convertible debenture.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriodForConversionOfCoeurConvertibleDebenture_2" xml:lang="en-US">Number of shares issued during period for conversion of Coeur convertible debenture</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriodForExerciseOfSharePurchaseWarrants_0" xml:lang="en-US">Number Of Shares Issued During Period For Exercise Of Share Purchase Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriodForExerciseOfSharePurchaseWarrants_1" xml:lang="en-US">The number of shares issued during period for exercise of share purchase warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriodForExerciseOfSharePurchaseWarrants_2" xml:lang="en-US">Number of shares issued during period for exercise of share purchase warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriodForVestingOfRSUAndExerciseOfStockOptions_0" xml:lang="en-US">Number Of Shares Issued During Period For Vesting Of R S U And Exercise Of Stock Options</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriodForVestingOfRSUAndExerciseOfStockOptions_1" xml:lang="en-US">The number of shares issued during period for vesting of RSUs, and the exercise of stock options.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriodForVestingOfRSUAndExerciseOfStockOptions_2" xml:lang="en-US">Number of shares issued during period for vesting of RSU and exercise of stock options</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriodValue_0" xml:lang="en-US">Value of shares issued during period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriodValue_1" xml:lang="en-US">Number Of Shares Issued During Period Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfSharesIssuedDuringPeriodValue_2" xml:lang="en-US">Value of shares issued during period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfSilverStreamInterests_0" xml:lang="en-US">Number of silver stream interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfSilverStreamInterests_1" xml:lang="en-US">Number Of Silver Stream Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfSilverStreamInterests_2" xml:lang="en-US">Number of silver stream interests acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfUnderwritersWarrantsIssued_0" xml:lang="en-US">Represents the number of underwriter's warrants issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfUnderwritersWarrantsIssued_1" xml:lang="en-US">Number Of Underwriters Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfUnderwritersWarrantsIssued_2" xml:lang="en-US">Number of underwriter's warrants issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfWarrantsExercised_0" xml:lang="en-US">It represents as a number of warrants exercised.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_mtaff_NumberOfWarrantsExercised_1" xml:lang="en-US">Exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfWarrantsExercised_2" xml:lang="en-US">Number Of Warrants Exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfWarrantsExercised_3" xml:lang="en-US">Exercise of share purchase and finder's warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfWarrantsExpired_0" xml:lang="en-US">It represents as a number of warrants expired.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_mtaff_NumberOfWarrantsExpired_1" xml:lang="en-US">Expired/cancelled</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfWarrantsExpired_2" xml:lang="en-US">Number Of Warrants Expired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfWarrantsExpired_3" xml:lang="en-US">Expired/Cancelled</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_NumberOfWarrantsIssued_0" xml:lang="en-US">Information about number of warrants issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_NumberOfWarrantsIssued_1" xml:lang="en-US">Number Of Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_NumberOfWarrantsIssued_2" xml:lang="en-US">Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_NumberOfWarrantsIssued_3" xml:lang="en-US">Number of warrants issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_OperatingCostContributionPricePerOunce_0" xml:lang="en-US">Operating cost contribution price per ounce.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_OperatingCostContributionPricePerOunce_1" xml:lang="en-US">Operating Cost Contribution Price Per Ounce</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_OperatingCostContributionPricePerOunce_2" xml:lang="en-US">Operating cost contribution price per ounce</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_OrefindersAcquisitionsMember_0" xml:lang="en-US">Orefinders acquisitions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_OrefindersAcquisitionsMember_1" xml:lang="en-US">Orefinders Acquisitions [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_OrefindersAcquisitionsMember_2" xml:lang="en-US">Orefinders acquisitions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_OrionNsrRoyaltyMember_0" xml:lang="en-US">Represents information of Orion NSR royalty.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_OrionNsrRoyaltyMember_1" xml:lang="en-US">Orion Nsr Royalty [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_OrionNsrRoyaltyMember_2" xml:lang="en-US">Orion NSR royalty</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_OtherAcquisitionCostsOfRoyaltyAndStreamInterests_0" xml:lang="en-US">Other acquisition costs of Royalty and stream interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_OtherAcquisitionCostsOfRoyaltyAndStreamInterests_1" xml:lang="en-US">Other Acquisition Costs Of Royalty And Stream Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_OtherAcquisitionCostsOfRoyaltyAndStreamInterests_2" xml:lang="en-US">Other acquisition costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_OtherAdditionsRoyaltyAndStreamInterests_0" xml:lang="en-US">Amount of other additions in royalty and stream interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_OtherAdditionsRoyaltyAndStreamInterests_1" xml:lang="en-US">Other Additions Royalty And Stream Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_OtherAdditionsRoyaltyAndStreamInterests_2" xml:lang="en-US">Other additions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_OtherCommitmentMember_0" xml:lang="en-US">Other Commitment [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_OtherCommitmentMember_1" xml:lang="en-US">Represents other commitment member.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_OtherCommitmentMember_2" xml:lang="en-US">Other</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_OtherLoanPayableMember_0" xml:lang="en-US">This member stands for other loan payable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_OtherLoanPayableMember_1" xml:lang="en-US">Other Loan Payable [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_OtherLoanPayableMember_2" xml:lang="en-US">Other</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_OtherRoyaltyInterestsMember_0" xml:lang="en-US">Other royalty interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_OtherRoyaltyInterestsMember_1" xml:lang="en-US">Other Royalty Interests [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_OtherRoyaltyInterestsMember_2" xml:lang="en-US">Other royalty interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_OtherRoyaltyInterestsMember_3" xml:lang="en-US">Exploration assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PercentageIncrementsOfExceededSilverPricePerOunce_0" xml:lang="en-US">Incremental percentage of exceeded silver price per ounce.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PercentageIncrementsOfExceededSilverPricePerOunce_1" xml:lang="en-US">Percentage Increments Of Exceeded Silver Price Per Ounce</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_PercentageIncrementsOfExceededSilverPricePerOunce_2" xml:lang="en-US">Incremental percentage of exceeded silver price per ounce</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PercentageOfAdditionalInterestAcquired_0" xml:lang="en-US">Represents percentage of additional interest acquired.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PercentageOfAdditionalInterestAcquired_1" xml:lang="en-US">Percentage Of Additional Interest Acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_PercentageOfAdditionalInterestAcquired_2" xml:lang="en-US">Percentage of additional interest acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PercentageOfCashAndCommonSharesPay_0" xml:lang="en-US">Percentage Of Cash And Common Shares Pay</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PercentageOfCashAndCommonSharesPay_1" xml:lang="en-US">Represents percentage of cash and common shares need to pay by company.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_PercentageOfCashAndCommonSharesPay_2" xml:lang="en-US">Percentage of total consideration</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PercentageOfEquityOwnershipOtherCompanyNeedsToMaintainInOrderForAutomaticConversionToApply_0" xml:lang="en-US">Represents percentage of equity ownership other company needs to maintain in order for automatic conversion to apply.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PercentageOfEquityOwnershipOtherCompanyNeedsToMaintainInOrderForAutomaticConversionToApply_1" xml:lang="en-US">Percentage Of Equity Ownership Other Company Needs To Maintain In Order For Automatic Conversion To Apply</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_PercentageOfEquityOwnershipOtherCompanyNeedsToMaintainInOrderForAutomaticConversionToApply_2" xml:lang="en-US">Percentage of equity ownership other company needs to maintain in order for automatic conversion to apply</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PercentageOfMaximumNumberOfRestrictedShareUnitsSharesReservedForIssuance_0" xml:lang="en-US">Percentage of maximum number of RSU shares that may be reserved for issuance under the plan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PercentageOfMaximumNumberOfRestrictedShareUnitsSharesReservedForIssuance_1" xml:lang="en-US">Percentage Of Maximum Number Of Restricted Share Units Shares Reserved For Issuance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_PercentageOfMaximumNumberOfRestrictedShareUnitsSharesReservedForIssuance_2" xml:lang="en-US">Percentage of maximum number of RSU shares reserved for issuance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PercentageOfMaximumNumberOfSharesReservedForIssuanceUnderStockOptionPlan_0" xml:lang="en-US">Percentage of maximum number of shares that may be reserved for issuance under the stock option plan.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PercentageOfMaximumNumberOfSharesReservedForIssuanceUnderStockOptionPlan_1" xml:lang="en-US">Percentage Of Maximum Number Of Shares Reserved For Issuance Under Stock Option Plan</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_PercentageOfMaximumNumberOfSharesReservedForIssuanceUnderStockOptionPlan_2" xml:lang="en-US">Percentage of maximum number of shares reserved for issuance under the stock option plan</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PercentageOfNetSmelterReturnRoyaltyAcquired_0" xml:lang="en-US">Percentage Of Net Smelter Return Royalty Acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PercentageOfNetSmelterReturnRoyaltyAcquired_1" xml:lang="en-US">Represents percentage of NSR Royalty acquired.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_PercentageOfNetSmelterReturnRoyaltyAcquired_2" xml:lang="en-US">Percentage of NSR royalty acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PercentageRightToBuySilverProduction_0" xml:lang="en-US">Percentage right to buy silver pruduction.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PercentageRightToBuySilverProduction_1" xml:lang="en-US">Percentage Right To Buy Silver Production</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_PercentageRightToBuySilverProduction_2" xml:lang="en-US">Percentage right to buy silver pruduction</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PresidentAndCeoMember_0" xml:lang="en-US">President is first or second ranking officer of the entity that may be appointed by the board of directors and CEO is the highest ranking executive officer, who has ultimate managerial responsibility for the entity and who reports to the board of directors.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PresidentAndCeoMember_1" xml:lang="en-US">President And Ceo [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_PresidentAndCeoMember_2" xml:lang="en-US">President and CEO</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PricePerSharePurchaseWarrantOutstandingExercisableAcquisition_0" xml:lang="en-US">It represents share purchase warrant outstanding exercisable acquisition.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PricePerSharePurchaseWarrantOutstandingExercisableAcquisition_1" xml:lang="en-US">Price Per Share Purchase Warrant Outstanding Exercisable Acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_PricePerSharePurchaseWarrantOutstandingExercisableAcquisition_2" xml:lang="en-US">Exercise price per share purchase warrant outstanding exercisable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PrincipalPaymentDuePeriod_0" xml:lang="en-US">Represents principal payment Due Period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PrincipalPaymentDuePeriod_1" xml:lang="en-US">Principal Payment Due Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_PrincipalPaymentDuePeriod_2" xml:lang="en-US">Principal payment due period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ProceedsFromExerciseOfSharePurchaseWarrants_0" xml:lang="en-US">The cash inflow from the exercise of share purchase warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ProceedsFromExerciseOfSharePurchaseWarrants_1" xml:lang="en-US">Proceeds From Exercise Of Share Purchase Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ProceedsFromExerciseOfSharePurchaseWarrants_2" xml:lang="en-US">Proceeds from exercise of share purchase warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ProceedsFromSaleOfProject_0" xml:lang="en-US">Proceeds From Sale Of Project</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ProceedsFromSaleOfProject_1" xml:lang="en-US">Represents the amount of proceeds from sale or project.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ProceedsFromSaleOfProject_2" xml:lang="en-US">Proceeds from sale of project</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PuchuldizaProjectMember_0" xml:lang="en-US">Puchuldiza project.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PuchuldizaProjectMember_1" xml:lang="en-US">Puchuldiza Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_PuchuldizaProjectMember_2" xml:lang="en-US">Puchuldiza project</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PurchaseAndSaleAgreementMember_0" xml:lang="en-US">This member stand for purchase and sale agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PurchaseAndSaleAgreementMember_1" xml:lang="en-US">Purchase And Sale Agreement [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_PurchaseAndSaleAgreementMember_2" xml:lang="en-US">Purchase and sale agreement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PurchasePriceForAdditionalNetSmelterRoyalty_0" xml:lang="en-US">Purchase price for additional net smelter royalty.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PurchasePriceForAdditionalNetSmelterRoyalty_1" xml:lang="en-US">Purchase Price For Additional Net Smelter Royalty</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_PurchasePriceForAdditionalNetSmelterRoyalty_2" xml:lang="en-US">Purchase price for additional net smelter royalty</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PurchasePriceOfAcquisitionPaidInCash_0" xml:lang="en-US">It represents purchase price of acquisition paid in cash.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PurchasePriceOfAcquisitionPaidInCash_1" xml:lang="en-US">Purchase Price Of Acquisition Paid In Cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_PurchasePriceOfAcquisitionPaidInCash_2" xml:lang="en-US">Purchase price of acquisition paid in cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PurchasePriceOfAgreement_0" xml:lang="en-US">Represents amount of purchase price of agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PurchasePriceOfAgreement_1" xml:lang="en-US">Purchase Price Of Agreement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_PurchasePriceOfAgreement_2" xml:lang="en-US">Purchase price of agreement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_PurchasePriceOfAgreementPayableInShares_0" xml:lang="en-US">Represents purchase price of agreement payable in share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_PurchasePriceOfAgreementPayableInShares_1" xml:lang="en-US">Purchase Price Of Agreement Payable In Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_PurchasePriceOfAgreementPayableInShares_2" xml:lang="en-US">Purchase price of agreement payable in shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ReallocationFromReservesForSharePurchaseWarrantsExercised_0" xml:lang="en-US">The amount of reallocation from reserves for share purchase warrants exercised.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_mtaff_ReallocationFromReservesForSharePurchaseWarrantsExercised_1" xml:lang="en-US">Reallocation from reserves for share purchase warrants exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ReallocationFromReservesForSharePurchaseWarrantsExercised_2" xml:lang="en-US">Reallocation From Reserves For Share Purchase Warrants Exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ReallocationFromReservesForSharePurchaseWarrantsExercised_3" xml:lang="en-US">Reallocation from reserves for share purchase warrants exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ReallocationFromReservesForStockOptionsExercised_0" xml:lang="en-US">The amount of reallocation from reserves for stock options exercised.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_mtaff_ReallocationFromReservesForStockOptionsExercised_1" xml:lang="en-US">Reallocation from reserves for stock options exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ReallocationFromReservesForStockOptionsExercised_2" xml:lang="en-US">Reallocation From Reserves For Stock Options Exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ReallocationFromReservesForStockOptionsExercised_3" xml:lang="en-US">Reallocation from reserves for stock options exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ReallocationOfDeferredAcquisitionCostsToRoyaltyAndStreamInterestsOnClosingOfAcquisition_0" xml:lang="en-US">The amount of reallocation of deferred acquisition costs to royalty and stream interests on closing of acquisition.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ReallocationOfDeferredAcquisitionCostsToRoyaltyAndStreamInterestsOnClosingOfAcquisition_1" xml:lang="en-US">Reallocation Of Deferred Acquisition Costs To Royalty And Stream Interests On Closing Of Acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ReallocationOfDeferredAcquisitionCostsToRoyaltyAndStreamInterestsOnClosingOfAcquisition_2" xml:lang="en-US">Reallocation of deferred acquisition costs to royalty and stream interests on closing of acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ReclassificationOfRoyaltyAndStreamInterests_0" xml:lang="en-US">Reclassification Of Royalty And Stream Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ReclassificationOfRoyaltyAndStreamInterests_1" xml:lang="en-US">Represents reclassification of Royalty and stream interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ReclassificationOfRoyaltyAndStreamInterests_2" xml:lang="en-US">Reclassification (Joaquin and COSE)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RecoveriesFromRoyaltyAndStreamInterests_0" xml:lang="en-US">Recoveries from royalty and stream interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RecoveriesFromRoyaltyAndStreamInterests_1" xml:lang="en-US">Recoveries From Royalty And Stream Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_RecoveriesFromRoyaltyAndStreamInterests_2" xml:lang="en-US">Recoveries from royalty and stream interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RecoveriesOfRoyaltyAndStreamInterests_0" xml:lang="en-US">Recoveries of Royalty and stream interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_mtaff_RecoveriesOfRoyaltyAndStreamInterests_1" xml:lang="en-US">Recoveries</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RecoveriesOfRoyaltyAndStreamInterests_2" xml:lang="en-US">Recoveries Of Royalty And Stream Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_RecoveriesOfRoyaltyAndStreamInterests_3" xml:lang="en-US">Recoveries</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RedHillNsrMember_0" xml:lang="en-US">Red Hill Nsr [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RedHillNsrMember_1" xml:lang="en-US">This member stands for Red Hill.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_RedHillNsrMember_2" xml:lang="en-US">Red Hill</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RepaymentOfThirdPartyLoans_0" xml:lang="en-US">Represents amount of third party loans.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RepaymentOfThirdPartyLoans_1" xml:lang="en-US">Repayment Of Third Party Loans</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_RepaymentOfThirdPartyLoans_2" xml:lang="en-US">Repayment third party loans</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RepaymentsOfFinanceChargesPaid_0" xml:lang="en-US">Repayments Of Finance Charges Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RepaymentsOfFinanceChargesPaid_1" xml:lang="en-US">Represents amount related to finance charges paid.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_mtaff_RepaymentsOfFinanceChargesPaid_2" xml:lang="en-US">Finance charges paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ReserveForSharePurchaseWarrants_0" xml:lang="en-US">Reserve For Share Purchase Warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ReserveForSharePurchaseWarrants_1" xml:lang="en-US">Reserve For Share Purchase Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ReserveForSharePurchaseWarrants_2" xml:lang="en-US">Reserve for ValGold share purchase warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RestrictedStockUnitIssuedToDirectorsAndOfficers_0" xml:lang="en-US">Number of RSUs directors and officers.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RestrictedStockUnitIssuedToDirectorsAndOfficers_1" xml:lang="en-US">Restricted Stock Unit Issued To Directors And Officers</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_RestrictedStockUnitIssuedToDirectorsAndOfficers_2" xml:lang="en-US">Share-based payments - restricted share units (shares)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_RestrictedStockUnitIssuedToDirectorsAndOfficers_3" xml:lang="en-US">Restricted stock unit issued to directors and officers</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ResultOfIndependentMineralResourceEstimationReport_0" xml:lang="en-US">Result Of Independent Mineral Resource Estimation Report</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ResultOfIndependentMineralResourceEstimationReport_1" xml:lang="en-US">Information of result of Independent Mineral Resource Estimation report.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ResultOfIndependentMineralResourceEstimationReport_2" xml:lang="en-US">Result of Independent Mineral Resource Estimation report</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RevenueFromRoyaltyInterests_0" xml:lang="en-US">Revenue From Royalty Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RevenueFromRoyaltyInterests_1" xml:lang="en-US">Amount of revenue from royalty interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_RevenueFromRoyaltyInterests_2" xml:lang="en-US">Revenue from royalty interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RevenueFromStreamInterest_0" xml:lang="en-US">Revenue from stream interest.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RevenueFromStreamInterest_1" xml:lang="en-US">Revenue From Stream Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_RevenueFromStreamInterest_2" xml:lang="en-US">Revenue from stream interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_RevenueFromStreamInterest_3" xml:lang="en-US">Revenue from stream interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveTerseLabel" xlink:label="lab_mtaff_RevenueFromStreamInterest_4" xml:lang="en-US">Endeavor stream</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RevenueLineItems_0" xml:lang="en-US">Revenue [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RevenueTable_0" xml:lang="en-US">Revenue [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RevisedConversionPrice_0" xml:lang="en-US">Revised Conversion Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RevisedConversionPrice_1" xml:lang="en-US">Represents revised conversion price per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_RevisedConversionPrice_2" xml:lang="en-US">Revised conversion price per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RightOfFirstRefusal_0" xml:lang="en-US">The amount of right of first refusal.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RightOfFirstRefusal_1" xml:lang="en-US">Right Of First Refusal</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_RightOfFirstRefusal_2" xml:lang="en-US">Right of first refusal</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RightOfUseAssetOfLeaseLiability_0" xml:lang="en-US">Right Of Use Asset Of Lease Liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RightOfUseAssetOfLeaseLiability_1" xml:lang="en-US">It represents right of use asset of lease liability.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_RightOfUseAssetOfLeaseLiability_2" xml:lang="en-US">Right of use asset of lease liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RightToBuyBackStreamAmount_0" xml:lang="en-US">Right to buy-back stream amount.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RightToBuyBackStreamAmount_1" xml:lang="en-US">Right To Buy Back Stream Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_RightToBuyBackStreamAmount_2" xml:lang="en-US">Right to buy-back stream, amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RightToBuySilverProduction_0" xml:lang="en-US">Right to buy silver production.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RightToBuySilverProduction_1" xml:lang="en-US">Right To Buy Silver Production</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_RightToBuySilverProduction_2" xml:lang="en-US">Right to buy silver production</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RightToDeliverSilverProductionOuncesDelivered_0" xml:lang="en-US">Right to deliver silver production, ounces delivered.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RightToDeliverSilverProductionOuncesDelivered_1" xml:lang="en-US">Right To Deliver Silver Production Ounces Delivered</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_RightToDeliverSilverProductionOuncesDelivered_2" xml:lang="en-US">Right to deliver silver production, ounces delivered</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RightToDeliverSilverProductionOuncesRemainingToBeDelivered_0" xml:lang="en-US">Right to deliver silver production, ounces remaining to be delivered.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RightToDeliverSilverProductionOuncesRemainingToBeDelivered_1" xml:lang="en-US">Right To Deliver Silver Production Ounces Remaining To Be Delivered</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_RightToDeliverSilverProductionOuncesRemainingToBeDelivered_2" xml:lang="en-US">Right to deliver silver production, ounces remaining to be delivered</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RiskFreeInterestRateWarrantsGranted_0" xml:lang="en-US">Represents the risk free interest rate of warrants granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RiskFreeInterestRateWarrantsGranted_1" xml:lang="en-US">Risk Free Interest Rate Warrants Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_RiskFreeInterestRateWarrantsGranted_2" xml:lang="en-US">Risk free interest rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RoyaltyAndStreamInterests_0" xml:lang="en-US">The carrying amount of royalty and stream interests.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_mtaff_RoyaltyAndStreamInterests_1" xml:lang="en-US">Ending Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="lab_mtaff_RoyaltyAndStreamInterests_2" xml:lang="en-US">Beginning balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RoyaltyAndStreamInterests_3" xml:lang="en-US">Royalty And Stream Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_RoyaltyAndStreamInterests_4" xml:lang="en-US">Royalty, stream, and other interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_RoyaltyAndStreamInterests_5" xml:lang="en-US">Royalty and stream interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_RoyaltyInterestsAndDeferredAcquisitionCosts_0" xml:lang="en-US">Royalty Interests And Deferred Acquisition Costs.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RoyaltyInterestsAndDeferredAcquisitionCosts_1" xml:lang="en-US">Royalty Interests And Deferred Acquisition Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_RoyaltyInterestsAndDeferredAcquisitionCosts_2" xml:lang="en-US">ValGold royalty interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_RoyaltyInterestsAndDeferredAcquisitionCosts_3" xml:lang="en-US">Royalty interests and deferred acquisition costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_RoyaltyInterestsAndDeferredAcquisitionCostsAbstract_0" xml:lang="en-US">Royalty Interests And Deferred Acquisition Costs [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_RoyaltyInterestsAndDeferredAcquisitionCostsAbstract_1" xml:lang="en-US">Accounts payable and accrued liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_SaleOfAcquisitionToOriginalOwner_0" xml:lang="en-US">It represents sale of acquisition to original owner.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_SaleOfAcquisitionToOriginalOwner_1" xml:lang="en-US">Sale Of Acquisition To Original Owner</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_SaleOfAcquisitionToOriginalOwner_2" xml:lang="en-US">Sale of acquisition to original owner</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_SaleOfStocksAxis_0" xml:lang="en-US">Sale Of Stocks[Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_SaleOfStocksAxis_1" xml:lang="en-US">Represents information of Sale of Stocks.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_SaleOfStocksDomain_0" xml:lang="en-US">Sale Of Stocks [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_SaleOfStocksDomain_1" xml:lang="en-US">Represents information of Sale of Stocks.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_SantaGertrudisAcquisitionsMember_0" xml:lang="en-US">Santa Gertrudis acquisitions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_SantaGertrudisAcquisitionsMember_1" xml:lang="en-US">Santa Gertrudis Acquisitions [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_SantaGertrudisAcquisitionsMember_2" xml:lang="en-US">Santa Gertrudis acquisitions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_SantaGertrudisAcquisitonsMember_0" xml:lang="en-US">Santa Gertrudis acquisitons.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_SantaGertrudisAcquisitonsMember_1" xml:lang="en-US">Santa Gertrudis Acquisitons [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_SantaGertrudisAcquisitonsMember_2" xml:lang="en-US">Santa Gertrudis acquisitions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ScheduleOfDetailedInformationAboutTradeAndOthersPayableAbstract_0" xml:lang="en-US">Schedule Of Detailed Information About Trade And Others Payable [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ScheduleOfWarrantLineItems_0" xml:lang="en-US">Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ScheduleOfWarrantLineItems_1" xml:lang="en-US">Schedule Of Warrant [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ScheduleOfWarrantTable_0" xml:lang="en-US">Schedule disclosing information related to warrant.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ScheduleOfWarrantTable_1" xml:lang="en-US">Schedule Of Warrant [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_SecondaryOfferingMember_0" xml:lang="en-US">Secondary Offering [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_SecondaryOfferingMember_1" xml:lang="en-US">Represents information of Secondary Offering.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_SecondaryOfferingMember_2" xml:lang="en-US">Secondary Offering</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_SecuredLoanAgreementsAggregateAmount_0" xml:lang="en-US">Represents secured aggregate loan amount.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_SecuredLoanAgreementsAggregateAmount_1" xml:lang="en-US">Secured Loan Agreements Aggregate Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_SecuredLoanAgreementsAggregateAmount_2" xml:lang="en-US">Secured loan agreements aggregate amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_SensitivityAnalysisVariancePrice_0" xml:lang="en-US">Sensitivity analysis, variance, percentage.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_SensitivityAnalysisVariancePrice_1" xml:lang="en-US">Sensitivity Analysis Variance Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_SensitivityAnalysisVariancePrice_2" xml:lang="en-US">Sensitivity analysis, variance, percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ShareIssueCostsMember_0" xml:lang="en-US">This member stands for share issue costs.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ShareIssueCostsMember_1" xml:lang="en-US">Share Issue Costs [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ShareIssueCostsMember_2" xml:lang="en-US">Share issue costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ShareOptionForfeitureRate_0" xml:lang="en-US">The percentage of forfeiture rate.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ShareOptionForfeitureRate_1" xml:lang="en-US">Share Option Forfeiture Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ShareOptionForfeitureRate_2" xml:lang="en-US">Forfeiture rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_SharePricePerShare_0" xml:lang="en-US">Share price per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_SharePricePerShare_1" xml:lang="en-US">Share Price Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_SharePricePerShare_2" xml:lang="en-US">Share price per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_SharePurchaseWarrantExercisePriceTerm_0" xml:lang="en-US">Term of share purchase warrant exercise price.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_SharePurchaseWarrantExercisePriceTerm_1" xml:lang="en-US">Share Purchase Warrant Exercise Price Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_SharePurchaseWarrantExercisePriceTerm_2" xml:lang="en-US">Term of share purchase warrant exercise price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_SharePurchaseWarrantOutstandingExercisableAcquisition_0" xml:lang="en-US">It reprensets share purchase warrant outstanding exercisable acquisition.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_SharePurchaseWarrantOutstandingExercisableAcquisition_1" xml:lang="en-US">Share Purchase Warrant Outstanding Exercisable Acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_SharePurchaseWarrantOutstandingExercisableAcquisition_2" xml:lang="en-US">Share purchase warrant outstanding exercisable acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_SharePurchaseWarrantsIssued_0" xml:lang="en-US">Share purchase warrants issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_SharePurchaseWarrantsIssued_1" xml:lang="en-US">Share Purchase Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_SharePurchaseWarrantsIssued_2" xml:lang="en-US">Share purchase warrants issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_StockOptionsPlanExpense_0" xml:lang="en-US">Represents amount of stock options plan expense.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_mtaff_StockOptionsPlanExpense_1" xml:lang="en-US">Share-based payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_StockOptionsPlanExpense_2" xml:lang="en-US">Stock Options Plan Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_StockOptionsPlanExpense_3" xml:lang="en-US">Stock options plan expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_SupplementalDisclosureOfCashFlowAbstract_0" xml:lang="en-US">Supplemental Disclosure Of Cash Flow [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_SupplementalDisclosureOfCashFlowAbstract_1" xml:lang="en-US">Aggregate value of private placement units issued on settlement of loans payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_SupplementalDisclosureOfCashFlowLineItems_0" xml:lang="en-US">Represents supplemental disclosure of cash flow line item.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_SupplementalDisclosureOfCashFlowLineItems_1" xml:lang="en-US">Supplemental Disclosure Of Cash Flow [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_SupplementalDisclosureOfCashFlowTable_0" xml:lang="en-US">Represents supplemental disclosure of cash flow table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_SupplementalDisclosureOfCashFlowTable_1" xml:lang="en-US">Supplemental Disclosure Of Cash Flow [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_TaxEffectOfChangesInUnrecognizedDeferredTaxAssets_0" xml:lang="en-US">Amount of tax effect of changes in unrecognized deferred tax assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_TaxEffectOfChangesInUnrecognizedDeferredTaxAssets_1" xml:lang="en-US">Tax Effect Of Changes In Unrecognized Deferred Tax Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_TaxEffectOfChangesInUnrecognizedDeferredTaxAssets_2" xml:lang="en-US">Changes in unrecognized deferred tax assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_TermOfConvertibleDebenturePayable_0" xml:lang="en-US">Represent the term of convertible debenture payable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_TermOfConvertibleDebenturePayable_1" xml:lang="en-US">Term Of Convertible Debenture Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_TermOfConvertibleDebenturePayable_2" xml:lang="en-US">Term of convertible debenture payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_TermOfConvertibleDebenturePayable_3" xml:lang="en-US">Terms of loan aggregate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_TermOfExerciseOfOption_0" xml:lang="en-US">Represents the term of excerise of option.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_TermOfExerciseOfOption_1" xml:lang="en-US">Term Of Exercise Of Option</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_TermOfExerciseOfOption_2" xml:lang="en-US">Term of exercise of option</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_TermOfWarrants_0" xml:lang="en-US">Represents term of warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_TermOfWarrants_1" xml:lang="en-US">Term Of Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_TermOfWarrants_2" xml:lang="en-US">Term of warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_TowerMountainAcquisitionMember_0" xml:lang="en-US">Tower Mountain Acquisition [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_TowerMountainAcquisitionMember_1" xml:lang="en-US">This member stands for Tower Mountain acquisition.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_TowerMountainAcquisitionMember_2" xml:lang="en-US">Tower Mountain acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_TowerMountainProjectMember_0" xml:lang="en-US">Tower Mountain project.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_TowerMountainProjectMember_1" xml:lang="en-US">Tower Mountain Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_TowerMountainProjectMember_2" xml:lang="en-US">Tower Mountain project</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_TradeAndOtherPayablesMember_0" xml:lang="en-US">Trade And Other Payables [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_TradeAndOtherPayablesMember_1" xml:lang="en-US">Represents trade and other payables member.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_TradeAndOtherPayablesMember_2" xml:lang="en-US">Trade and other payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_TypeOfArrangementsAxis_0" xml:lang="en-US">Information by category of arrangement, including but not limited to collaborative arrangements and non-collaborative arrangements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_TypeOfArrangementsAxis_1" xml:lang="en-US">Type Of Arrangements [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_TypeOfArrangementsDomain_0" xml:lang="en-US">This item is to be populated with the collective of (i) types (categories) of arrangements of the entity applicable to its revenue-generating activities or operations and non-arrangement transactions, including but not limited to, for instance, sales of product manufactured by the entity, if such comparison of arrangements as a component of all transactions is provided by the entity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_TypeOfArrangementsDomain_1" xml:lang="en-US">Type Of Arrangements [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_UnitsIssuedInPeriod_0" xml:lang="en-US">Units issued in period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_UnitsIssuedInPeriod_1" xml:lang="en-US">Units Issued In Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_UnitsIssuedInPeriod_2" xml:lang="en-US">Units issued in period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_UnitsIssuedInPeriodPricePerUnit_0" xml:lang="en-US">Represents price per unit issued in period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_UnitsIssuedInPeriodPricePerUnit_1" xml:lang="en-US">Units Issued In Period Price Per Unit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_UnitsIssuedInPeriodPricePerUnit_2" xml:lang="en-US">Units issued in period price per unit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_UpfrontPaymentMadeUponExerciseOfOption_0" xml:lang="en-US">The amount of upfront payment made upon exercise of option.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_UpfrontPaymentMadeUponExerciseOfOption_1" xml:lang="en-US">Upfront Payment Made Upon Exercise Of Option</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_UpfrontPaymentMadeUponExerciseOfOption_2" xml:lang="en-US">Upfront payment made upon exercise of option</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ValgoldAcquisitionsMember_0" xml:lang="en-US">ValGold acquisitions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ValgoldAcquisitionsMember_1" xml:lang="en-US">Valgold Acquisitions [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ValgoldAcquisitionsMember_2" xml:lang="en-US">ValGold acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ValgoldAcquisitionsMember_3" xml:lang="en-US">ValGold acquisitions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ValueOfCommonSharesAcquisition_0" xml:lang="en-US">Represents amount related to acquisitions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ValueOfCommonSharesAcquisition_1" xml:lang="en-US">Value Of Common Shares Acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ValueOfCommonSharesAcquisition_2" xml:lang="en-US">Value of common shares acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ValueOfRestrictedStockUnitIssuedToDirectorsAndOfficers_0" xml:lang="en-US">Value of restricted stock unit issued to directors and officers.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ValueOfRestrictedStockUnitIssuedToDirectorsAndOfficers_1" xml:lang="en-US">Value Of Restricted Stock Unit Issued To Directors And Officers</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ValueOfRestrictedStockUnitIssuedToDirectorsAndOfficers_2" xml:lang="en-US">Restricted share units vested</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ValueOfRestrictedStockUnitIssuedToDirectorsAndOfficers_3" xml:lang="en-US">Value of restricted stock unit issued to directors and officers</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:label="lab_mtaff_ValueOfRestrictedStockUnitIssuedToDirectorsAndOfficers_4" xml:lang="en-US">Share-based payments - restricted share units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ValueOfSharePurchaseWarrantsIssued_0" xml:lang="en-US">Value of share purchase warrants issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ValueOfSharePurchaseWarrantsIssued_1" xml:lang="en-US">Value Of Share Purchase Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_ValueOfSharePurchaseWarrantsIssued_2" xml:lang="en-US">Fair value at measurement date, warrants issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ValueOfSharePurchaseWarrantsIssued_3" xml:lang="en-US">Value of share purchase warrants issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ValueOfSharesIssuedForVestingOfRestrictedStockUnits_0" xml:lang="en-US">Value Of Shares Issued For Vesting Of Restricted Stock Units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ValueOfSharesIssuedForVestingOfRestrictedStockUnits_1" xml:lang="en-US">Value of shares issued for vesting of restricted stock units.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ValueOfSharesIssuedForVestingOfRestrictedStockUnits_2" xml:lang="en-US">Value of common shares issued for vesting of RSU's</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ValueOfUnderwritersWarrantsIssued_0" xml:lang="en-US">The value of underwriter's warrants issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ValueOfUnderwritersWarrantsIssued_1" xml:lang="en-US">Value Of Underwriters Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ValueOfUnderwritersWarrantsIssued_2" xml:lang="en-US">Value of underwriter's warrants issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ValueOfUnderwriterWarrantsIssued_0" xml:lang="en-US">Represents value of underwriter warrants issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ValueOfUnderwriterWarrantsIssued_1" xml:lang="en-US">Value Of Underwriter Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ValueOfUnderwriterWarrantsIssued_2" xml:lang="en-US">Value of underwriter warrants issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ValueOfUnitsIssuedInPeriod_0" xml:lang="en-US">Represents value of units issued in period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ValueOfUnitsIssuedInPeriod_1" xml:lang="en-US">Value Of Units Issued In Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ValueOfUnitsIssuedInPeriod_2" xml:lang="en-US">Value of units issued in period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ValueOfWarrantsIssued_0" xml:lang="en-US">Represents value of warrant issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ValueOfWarrantsIssued_1" xml:lang="en-US">Value Of Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ValueOfWarrantsIssued_2" xml:lang="en-US">Value of warrants issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_WarrantsExercisePrice_0" xml:lang="en-US">It represents as a exercise price of warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_WarrantsExercisePrice_1" xml:lang="en-US">Warrants Exercise Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_WarrantsExercisePrice_2" xml:lang="en-US">Warrants exercise price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_WarrantsForfeitureRate_0" xml:lang="en-US">The forfeiture rate of warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_WarrantsForfeitureRate_1" xml:lang="en-US">Warrants Forfeiture Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_WarrantsForfeitureRate_2" xml:lang="en-US">Forfeiture rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_WasamacNsrMember_0" xml:lang="en-US">Wasamac NSR.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_WasamacNsrMember_1" xml:lang="en-US">Wasamac Nsr [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_WasamacNsrMember_2" xml:lang="en-US">Wasamac</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_WasamacNsrMember_3" xml:lang="en-US">Wasamac NSR</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_WeightedAverageExercisePriceOfUnderwritersWarrantsIssued_0" xml:lang="en-US">It represents as a amount of underwriters warrants issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_WeightedAverageExercisePriceOfUnderwritersWarrantsIssued_1" xml:lang="en-US">Weighted Average Exercise Price Of Underwriters Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_WeightedAverageExercisePriceOfUnderwritersWarrantsIssued_2" xml:lang="en-US">Weighted average exercise price of underwriter warrants, Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_WeightedAverageExercisePriceOfWarrantsExercised_0" xml:lang="en-US">It represents as a amount of warrants exercised.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_WeightedAverageExercisePriceOfWarrantsExercised_1" xml:lang="en-US">Weighted Average Exercise Price Of Warrants Exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_WeightedAverageExercisePriceOfWarrantsExercised_2" xml:lang="en-US">Weighted average exercise price of warrants, Exercised</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_WeightedAverageExercisePriceOfWarrantsExpired_0" xml:lang="en-US">It represents as a amount of warrants expired.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_WeightedAverageExercisePriceOfWarrantsExpired_1" xml:lang="en-US">Weighted Average Exercise Price Of Warrants Expired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_WeightedAverageExercisePriceOfWarrantsExpired_2" xml:lang="en-US">Weighted average exercise price of warrants, Expired/cancelled</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_WeightedAverageExercisePriceOfWarrantsIssued_0" xml:lang="en-US">It represents as a amount of warrants issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_WeightedAverageExercisePriceOfWarrantsIssued_1" xml:lang="en-US">Weighted Average Exercise Price Of Warrants Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_WeightedAverageExercisePriceOfWarrantsIssued_2" xml:lang="en-US">Weighted average exercise price of warrants, Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_WeightedAverageExercisePriceOfWarrantsOutstanding_0" xml:lang="en-US">Weighted average exercise price of warrants outstanding in share-based payment arrangement at beginning of period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_mtaff_WeightedAverageExercisePriceOfWarrantsOutstanding_1" xml:lang="en-US">Weighted average exercise price of warrants outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="lab_mtaff_WeightedAverageExercisePriceOfWarrantsOutstanding_2" xml:lang="en-US">Weighted average exercise price of warrants outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_WeightedAverageExercisePriceOfWarrantsOutstanding_3" xml:lang="en-US">Weighted Average Exercise Price Of Warrants Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_WeightedAverageFairValueOfRestrictedShareUnitsGranted_0" xml:lang="en-US">The weighted average fair value of other equity instruments granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_WeightedAverageFairValueOfRestrictedShareUnitsGranted_1" xml:lang="en-US">Weighted Average Fair Value Of Restricted Share Units Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_WeightedAverageFairValueOfRestrictedShareUnitsGranted_2" xml:lang="en-US">Weighted average fair value of restricted share units granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_WeightedAverageFairValueOfWarrants_0" xml:lang="en-US">Represents the weighted average fair value of warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_WeightedAverageFairValueOfWarrants_1" xml:lang="en-US">Weighted Average Fair Value Of Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_mtaff_WeightedAverageFairValueOfWarrants_2" xml:lang="en-US">Weighted average fair value of warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_WestTimminsExtensionPropertiesMember_0" xml:lang="en-US">West Timmins extension properties.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_WestTimminsExtensionPropertiesMember_1" xml:lang="en-US">West Timmins Extension Properties [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_WestTimminsExtensionPropertiesMember_2" xml:lang="en-US">West Timmins extension properties</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_WharfAcquisitionMember_0" xml:lang="en-US">Wharf Acquisition [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_WharfAcquisitionMember_1" xml:lang="en-US">Acquisition related to Wharf mines.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_WharfAcquisitionMember_2" xml:lang="en-US">Wharf Acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_mtaff_ZarumaGoldMineMember_0" xml:lang="en-US">Zaruma gold mine.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_mtaff_ZarumaGoldMineMember_1" xml:lang="en-US">Zaruma Gold Mine [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_mtaff_ZarumaGoldMineMember_2" xml:lang="en-US">Zaruma gold mine</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_srt_ChiefFinancialOfficerMember_0" xml:lang="en-US">Chief Financial Officer [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_srt_ChiefFinancialOfficerMember_1" xml:lang="en-US">CFO</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AmendmentDescription_1" xlink:to="lab_dei_AmendmentDescription_0"/>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AmendmentFlag_2" xlink:to="lab_dei_AmendmentFlag_0"/>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CurrentFiscalYearEndDate_3" xlink:to="lab_dei_CurrentFiscalYearEndDate_0"/>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalPeriodFocus_4" xlink:to="lab_dei_DocumentFiscalPeriodFocus_0"/>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalYearFocus_5" xlink:to="lab_dei_DocumentFiscalYearFocus_0"/>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentPeriodEndDate_6" xlink:to="lab_dei_DocumentPeriodEndDate_0"/>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentType_7" xlink:to="lab_dei_DocumentType_0"/>
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