0001853021 2023-03-10 2023-03-10 0001853021 MTALU:UnitsEachConsistingofOneClassAOrdinarySharesDollar0.0001ParValueandOneThirdofOneRedeemableWarrantMember 2023-03-10 2023-03-10 0001853021 us-gaap:CommonClassAMember 2023-03-10 2023-03-10 0001853021 MTALU:RedeemableWarrantsIncludedasPartoftheUnitsEachWholeWarrantExercisableforOneShareofClassAOrdinarySharesatanExercisePriceofDollar11.50Member 2023-03-10 2023-03-10 iso4217:USD shares iso4217:USD shares 0001853021 false 8-K 2023-03-10 METALS ACQUISITION CORP E9 001-40685 98-1589041 Century House, Ground Floor Cricket Square, P.O. Box 2238 Grand Cayman KY1-1107 KY 817 698-9901 true false false false Units, each consisting of one Class A ordinary shares, $0.0001 par value, and one-third of one redeemable warrant MTAL.U NYSE Class A ordinary shares included as part of the units MTAL NYSE Redeemable warrants included as part of the units, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 MTAL WS NYSE true false