XML 19 R4.htm IDEA: XBRL DOCUMENT
v3.23.4

Unaudited consolidated statement of changes in equity - USD ($) | Share capital PIPE Osisko | Share capital PIPE Sprott | Share capital PIPE BlackRock | Share capital PIPE A and PIPE B | Share capital Backstop facility Osisko | Share capital Glencore | Share capital Public shareholders - non-redemption | Share capital | Additional Paid-in Capital | Accumulated Deficit | PIPE Osisko | PIPE Sprott | PIPE BlackRock | PIPE | PIPE A and PIPE B | Backstop facility Osisko | Glencore | Public shareholders - non-redemption | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance as of beginning at Dec. 31, 2021 |  |  |  |  |  |  |  | $ 1,000 | $ 24,000 | $ 4,037,000 |  |  |  |  |  |  |  |  | $ 4,062,000
Contribution of conversion price in excess of fair value of warrants |  |  |  |  |  |  |  |  | 721,000 |  |  |  |  |  |  |  |  |  | 721,000
Net loss |  |  |  |  |  |  |  |  |  | (11,767,000) |  |  |  |  |  |  |  |  | (11,767,000)
Balance as of ending at Jun. 30, 2022 |  |  |  |  |  |  |  | 1,000 | 745,000 | (7,730,000) |  |  |  |  |  |  |  |  | (6,984,000)
Balance as of beginning at Dec. 31, 2021 |  |  |  |  |  |  |  | 1,000 | 24,000 | 4,037,000 |  |  |  |  |  |  |  |  | 4,062,000
Net loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (24,968,000)
Balance as of ending at Dec. 31, 2022 |  |  |  |  |  |  |  | 1,000 | 969,000 | (20,931,000) |  |  |  |  |  |  |  |  | (19,961,000)
Contribution of conversion price in excess of fair value of warrants |  |  |  |  |  |  |  |  | 198,000 |  |  |  |  |  |  |  |  |  | 198,000
Amount in excess of the face value over the present value on related promissory note |  |  |  |  |  |  |  |  | 69,000 |  |  |  |  |  |  |  |  |  | 69,000
Issue of shares | $ 15,000,000 | $ 15,000,000 | $ 45,000,000 | $ 184,517,000 | $ 25,000,000 |  | $ 34,431,000 |  |  |  | $ 15,000,000 | $ 15,000,000 | $ 45,000,000 |  | $ 184,517,000 | $ 25,000,000 |  | $ 34,431,000 |
Rollover shares - Glencore |  |  |  |  |  | $ 100,000,000 |  |  |  |  |  |  |  |  |  |  | $ 100,000,000 |  |
Share issuance cost |  |  |  |  |  |  |  | (5,763,000) |  |  |  |  |  | $ (3,989,000) |  |  |  |  | (5,763,000)
Net loss |  |  |  |  |  |  |  |  |  | (32,263,000) |  |  |  |  |  |  |  |  | (32,263,000)
Balance as of ending at Jun. 30, 2023 |  |  |  |  |  |  |  | $ 413,186,000 | $ 1,236,000 | $ (53,194,000) |  |  |  |  |  |  |  |  | $ 361,228,000

X
- Definition The amount of residual interest in the assets of the entity after deducting all its liabilities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2023-01-01 -Paragraph 24 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2023-en-r&anchor=para_24_a&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2023-01-01 -Paragraph 32 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2023-en-r&anchor=para_32_a_i&doctype=Standard -URIDate 2023-03-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2023-01-01 -Paragraph 93 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2023-en-r&anchor=para_93_a&doctype=Standard -URIDate 2023-03-23 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2023-01-01 -Paragraph 93 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2023-en-r&anchor=para_93_b&doctype=Standard -URIDate 2023-03-23 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2023-01-01 -Paragraph 93 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2023-en-r&anchor=para_93_e&doctype=Standard -URIDate 2023-03-23 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -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 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 78 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_78_e&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_Equity
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The increase (decrease) in equity resulting from the acquisition of subsidiaries. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 106 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_106_d&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_IncreaseDecreaseThroughAcquisitionOfSubsidiary
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase in equity through the issue of equity instruments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 106 -Subparagraph d -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_106_d_iii&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_IssueOfEquity
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The total of income less expenses from continuing and discontinued operations, excluding the components of other comprehensive income. [Refer: Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2023-01-01 -Paragraph 18 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_18_b&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2023-01-01 -Paragraph 32 -Subparagraph a -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2023-en-r&anchor=para_32_a_ii&doctype=Standard -URIDate 2023-03-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2023-01-01 -Paragraph 24 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2023-en-r&anchor=para_24_b&doctype=Standard -URIDate 2023-03-23 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2023-01-01 -Paragraph 28 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2023-en-r&anchor=para_28_b&doctype=Standard -URIDate 2023-03-23 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2023-01-01 -Paragraph 23 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2023-en-r&anchor=para_23&doctype=Standard -URIDate 2023-03-23 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 12 -IssueDate 2023-01-01 -Paragraph B10 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2023-en-r&anchor=para_B10_b&doctype=Appendix&subtype=B -URIDate 2023-03-23 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 17 -IssueDate 2023-01-01 -Paragraph 113 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2023-en-r&anchor=para_113_b&doctype=Standard -URIDate 2023-03-23 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 81A -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_81A_a&doctype=Standard -URIDate 2023-03-23 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 106 -Subparagraph d -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_106_d_i&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_ProfitLoss
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of cost related to the issuance of shares. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 106 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_106_d&doctype=Standard -URIDate 2023-03-23 + Details
Name: | ifrs-full_ShareIssueRelatedCost
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) in equity resulting from the adjustment for contribution of conversion price in excess of fair value of warrants. + References No definition available. + Details
Name: | mtal_IncreaseDecreaseThroughAdjustmentForConversionPriceInExcessOfFairValueOfWarrants
Namespace Prefix: | mtal_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) in equity resulting from the adjustment to the amount in excess of the face value over the present value on related promissory note. + References No definition available. + Details
Name: | mtal_IncreaseDecreaseThroughAdjustmentForFaceAmountInExcessOfPresentValueOfPromissoryNote
Namespace Prefix: | mtal_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration