Cooperite is a grey mineral consisting of platinum sulfide (PtS), general in combinations with sulfides of other elements such as palladium and nickel (PdS and NiS). Its general formula is (Pt,Pd,Ni)S. It is mined as an ore of platinum and platinum group elements such as palladium. It occurs in South Africa in minable quantities and elsewhere. Platinum is also a certification by the RIAA and other world recording industries, see: RIAA certification General Name, Symbol, Number Platinum, Pt, 78 Chemical series transition metals Group, Period, Block 10 , 6, d Density, Hardness 21. ... In chemistry, a sulfide (sulphide in British and Canadian English) is a combination of sulfur with an oxidation number of -2, with another chemical element or a radical thereof. ... This article describes the chemical element palladium. ... General Name, Symbol, Number nickel, Ni, 28 Chemical series transition metals Group, Period, Block 10 , 4, d Density, Hardness 8908 kg/m³, 4. ...

It is named after R. Cooper who first characterized it in 1928.

External links:

• web mineral (http://webmineral.com/data/Cooperite.shtml)
• Mindat mining data (http://www.mindat.org/min-1123.html)