XML 62 R47.htm IDEA: XBRL DOCUMENT v3.23.4

Investments (Tables)

6 Months Ended

Jun. 30, 2023

Investments

Summary of investments

​

​	​	​	​	​	​	​
​		30 June		31 December		1 January
US$ thousand	​	2023	​	2022	​	2022
Marketable securities held in trust account		—		268,909		265,156
​		—		268,909		265,156

X

- References

No definition available.

+ Details

Name:	mtal_IfrsInvestmentsAbstract
Namespace Prefix:	mtal_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The tabular disclosure of investments.

+ References

No definition available.

+ Details

Name:	mtal_ScheduleOfInvestmentsTableTextBlock
Namespace Prefix:	mtal_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration