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    <element id="COBA_StockOptionsMember" name="StockOptionsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_OptionsIssuedMay242022Member" name="OptionsIssuedMay242022Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_OptionsIssuedJune012022Member" name="OptionsIssuedJune012022Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_OptionsIssuedJuly152022Member" name="OptionsIssuedJuly152022Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_OptionsIssuedJuly282022Member" name="OptionsIssuedJuly282022Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_OptionsIssuedJuly012023Member" name="OptionsIssuedJuly012023Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_OptionsIssuedJuly072023Member" name="OptionsIssuedJuly072023Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_OptionsIssuedJan252024Member" name="OptionsIssuedJan252024Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_OptionsIssuedFeb132024Member" name="OptionsIssuedFeb132024Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_OptionsIssuedJan172025Member" name="OptionsIssuedJan172025Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_OptionsIssuedJuly292025Member" name="OptionsIssuedJuly292025Member" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_CORFOMember" name="CORFOMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_InKindContributionsMember" name="InKindContributionsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_AshLazenbyMember" name="AshLazenbyMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_PaymentsForPurchaseOfOtherAssets2" name="PaymentsForPurchaseOfOtherAssets2" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_CashPaidForDirectAcquisitionCostsForIssuances" name="CashPaidForDirectAcquisitionCostsForIssuances" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_CapitalizedOtherAssetsAcquiredThroughAccountsPayableAndAccruedExpenses" name="CapitalizedOtherAssetsAcquiredThroughAccountsPayableAndAccruedExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_IssuanceCostsIncludedInAccountsPayable" name="IssuanceCostsIncludedInAccountsPayable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_DisclosureNsrRoyaltyAssetAbstract" name="DisclosureNsrRoyaltyAssetAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_NSRRoyaltyAssetDisclosureTextBlock" name="NSRRoyaltyAssetDisclosureTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_MiningConcessionsPolicyTextBlock" name="MiningConcessionsPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_MiningConcessions" name="MiningConcessions" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_BusinessCombinationContingentConsiderationAssetReclassed" name="BusinessCombinationContingentConsiderationAssetReclassed" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_BusinessCombinationContingentConsiderationOtherAssets" name="BusinessCombinationContingentConsiderationOtherAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_DisclosureTable" name="DisclosureTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="COBA_DisclosureLineItem" name="DisclosureLineItem" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_OptionIssueDate" name="OptionIssueDate" nillable="true" xbrli:periodType="duration" type="xbrli:dateItemType" substitutionGroup="xbrli:item" />
    <element id="COBA_OptionExpiryDate" name="OptionExpiryDate" nillable="true" xbrli:periodType="duration" type="xbrli:dateItemType" substitutionGroup="xbrli:item" />
</schema>
