XML 108 R93.htm IDEA: XBRL DOCUMENT
v3.23.4

Loans and borrowings - Terms and conditions of Silver Purchase Agreement (Details) - USD ($) $ in Thousands | Jun. 16, 2023 | Jun. 30, 2023 | Jun. 13, 2023 | Dec. 31, 2022 | Jan. 01, 2022
--- | --- | --- | --- | --- | ---
Loans and borrowings |  |  |  |  |
Fair value of compound embedded derivative |  | $ 9,219 |  |  |
Financial liability |  | 809,219 |  | $ 290,151 | $ 262,574
Silver Purchase Agreement |  |  |  |  |
Loans and borrowings |  |  |  |  |
Total funding available to the Group | $ 75,000 |  |  |  |
Refined silver to be delivered, as a percentage of payable silver (as a percent) | 100.00% |  |  |  |
Produced Silver payable (as a percent) | 90.00% |  |  |  |
Deliveries made towards the Copper Stream | $ 0 |  |  |  |
Silver Cash Price receivable for one ounce of refined silver delivered (as a percent) | 4.00% |  |  |  |
Threshold amount of Copper Deposit up to which the difference between the Copper Market Price and the Copper Cash Price will be credited | $ 0 |  |  |  |
Fair value of compound embedded derivative | 0 | $ 3,740 |  |  |
Financial liability | $ 75,000 |  |  |  |
Effective interest rate (as a percent) |  |  | 8.57% |  |

X
- Definition The interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 7 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_7&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_BorrowingsInterestRate
Namespace Prefix: | ifrs-full_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_DerivativeFinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_25&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_FinancialLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Threshold amount of outstanding balance under the borrowings, up to which the difference between the product's Market Price and the product's Cash Price will be credited . + References No definition available. + Details
Name: | mtal_BorrowingsThresholdOutstandingBalanceUpToWhichCreditOfDifferenceBetweenProductsMarketPriceAndProductsCashPriceWillBeMade
Namespace Prefix: | mtal_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total amount of funding available to the company under the borrowings. + References No definition available. + Details
Name: | mtal_BorrowingsTotalFundingAvailable
Namespace Prefix: | mtal_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of deliveries made by the company as of the balance sheet date. + References No definition available. + Details
Name: | mtal_DeliveriesMade
Namespace Prefix: | mtal_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Refined silver to be delivered by the company, represented as a percentage of payable silver. + References No definition available. + Details
Name: | mtal_PercentageOfPayableSilverToBeDeliveredAsRefinedSilver
Namespace Prefix: | mtal_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of produced Silver payable by the company. + References No definition available. + Details
Name: | mtal_PercentageOfProducedSilverPayable
Namespace Prefix: | mtal_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cash payments receivable by the company for one ounce of refined silver delivered, represented as a percentage of Silver Market Price. + References No definition available. + Details
Name: | mtal_SilverCashPriceReceivableForOneOunceOfRefinedSilverDeliveredPercentage
Namespace Prefix: | mtal_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=mtal_SilverPurchaseAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |