    <SEC-DOCUMENT>0001104659-25-070077-index.html : 20250723
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    <ACCEPTANCE-DATETIME>20250723172159
    ACCESSION NUMBER:		0001104659-25-070077
    CONFORMED SUBMISSION TYPE:	6-K
    PUBLIC DOCUMENT COUNT:		21
    CONFORMED PERIOD OF REPORT:	20250723
    FILED AS OF DATE:		20250723
    DATE AS OF CHANGE:		20250723

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			MAC Copper Ltd
    		CENTRAL INDEX KEY:			0001950246
    		STANDARD INDUSTRIAL CLASSIFICATION:	METAL MINING [1000]
    		ORGANIZATION NAME:           	01 Energy & Transportation
    		EIN:				000000000
    		STATE OF INCORPORATION:			Y9
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		6-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-41722
    		FILM NUMBER:		251143886

    	BUSINESS ADDRESS:
    		STREET 1:		3RD FLOOR
    		STREET 2:		44 ESPLANADE, ST
    		CITY:			ST. HELIER
    		STATE:			Y9
    		ZIP:			JE4 9WG
    		BUSINESS PHONE:		8176989901

    	MAIL ADDRESS:
    		STREET 1:		3RD FLOOR
    		STREET 2:		44 ESPLANADE, ST
    		CITY:			ST. HELIER
    		STATE:			Y9
    		ZIP:			JE4 9WG

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Metals Acquisition Ltd
    		DATE OF NAME CHANGE:	20221011
    </SEC-HEADER>
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    <SEQUENCE>1
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    <DESCRIPTION>FORM 6-K
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    <DESCRIPTION>EXHIBIT 99.1
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