XML 61 R46.htm IDEA: XBRL DOCUMENT
v3.23.4

Property, plant and equipment (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2023
Property, plant and equipment |
Schedule of estimated useful lives reconciliation of carrying amount | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Freehold land |  | Plant and |  | Right-of-use |  | Mine |  | ​
US$ thousand | ​ | and buildings | ​ | equipment | ​ | assets | ​ | development | ​ | Total
Cost |  |  |  |  |  |  |  |  |  |
Balance at 1 January 2023 |  | — |  | — |  | — |  | — |  | —
Acquired through business combination |  | 1,128 |  | 306,381 |  | 398 |  | 946,766 |  | 1,254,673
Additions |  | — |  | 564 |  | 15,733 |  | 1,698 |  | 17,995
Disposals |  | — |  | (16,564) |  | — |  | — |  | (16,564)
Balance at 30 June 2023 |  | 1,128 |  | 290,381 |  | 16,131 |  | 948,464 |  | 1,256,104
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Accumulated depreciation |  |  |  |  |  |  |  |  |  |
Balance at 1 January 2023 |  | — |  | — |  | — |  | — |  | —
Depreciation for the period |  | 16 |  | 1,146 |  | 131 |  | 1,908 |  | 3,201
Balance at 30 June 2023 |  | 16 |  | 1,146 |  | 131 |  | 1,908 |  | 3,201
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Carrying amounts |  |  |  |  |  |  |  |  |  |
At 1 January 2022 |  | — |  | — |  | — |  | — |  | —
At 31 December 2022 |  | — |  | — |  | — |  | — |  | —
At 30 June 2023 |  | 1,112 |  | 289,235 |  | 16,000 |  | 946,556 |  | 1,252,903

X
- References No definition available. + Details
Name: | ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of detailed information about property, plant and equipment. [Refer: Property, plant and equipment] + References No definition available. + Details
Name: | mtal_ScheduleOfEstimatedUsefulLivesReconciliationOfCarryingAmount
Namespace Prefix: | mtal_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration