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Morenci Copper Mine, Arizona


Arizona, US


Freeport McMoRan Copper & Gold (72%), Sumitomo (15%), SMM Morenci (13%)


Porphyry copper

Mineral Types

Chalcocite, pyrite, chrysocolla, malachite and molybdenite


Proven and probable: 3,574Mt of millable ore

Production Capacity

More than 125 million tons a year of copper


Large-scale open pit


Crushing, grinding and agglomeration, leach, solvent extraction / electrowinning


Approx. 2,000

Open-pit mining

Bucyrus drills, P&H shovels, Caterpillar trucks, conveyor system

Copper recovery

Milling-agglomeration circuits, Rahco leach-dump stackers, SX/EW plants

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