XML 35 R20.htm IDEA: XBRL DOCUMENT v3.23.4

Investments

6 Months Ended

Jun. 30, 2023

Investments

Investments

15.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

​

​

15.Investments (continued)

​

Marketable securities represent the net proceeds from the Company’s initial public offering (“IPO”) held prior to initial Business Combination. These funds were held in a trust account and were invested only in U.S. government treasury obligations with a maturity of 185 days or less or in money market funds meeting certain conditions under the Investment Company Act. Upon completion of the initial Business Combination, these funds were released to the public shareholders of Class A ordinary shares who elected to redeem their Class A ordinary shares, subject to certain limitations.

X

- Definition

The entire disclosure for interests in other entities.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2023-01-01
-Paragraph 1
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2023-en-r&anchor=para_1&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_DisclosureOfInterestsInOtherEntitiesExplanatory
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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