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A native platinum nugget, Kondyor mine, Khabarovsk Krai Platinum-palladium ore, Stillwater mine, Beartooth Mountains, Montana, US Sulfidic serpentinite (platinum-palladium ore) from Stillwater Mine, Beartooth Mountains, Montana, USA. Platinum is an extremely rare metal, [26] occurring at a concentration of only 0.005 ppm in Earth's crust.
Ore minerals in IOCG deposits are typically copper-iron sulfide chalcopyrite and gangue pyrite, forming 10–15% of the rock mass. Supergene profiles can be developed above weathered examples of IOCG deposits, as exemplified by the Sossego deposit, Para State, Brazil , where typical oxidised copper minerals are present, e.g.; malachite ...