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Cooperite_(mineral)

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Cooperite is a grey mineral consisting of platinum sulfide (PtS), generally in combinations with sulfides of other elements such as palladium (PdS and NiS). Its general formula is (Pt,Pd,Ni)S. It is a dimorph of braggite

It is mined as an ore of platinum and platinum group metals such as palladium. It occurs in South Africa in minable quantities and an old mine near Mount Washington on Vancouver Island.

It was first described in 1928 for occurrences in the Bushveld Igneous Complex and named after South African metallurgist Richard A. Cooper

Identification