Braggite

braggite

cooperite

vysotskite

sperrylite

Images

Formula: PtS
Sulphide of platinum, paramorph of cooperite, forms a series with vysotskite
Specific gravity: 8.9
Hardness: 5
Colour: Steel-grey
Common impurities: Ni
Environments

Plutonic igneous environments

Braggite occurs in norites occurring in layered mafic intrusives, formed at high magmatic temperatures (Webmin).

Localities

At the type locality, Mokopane, Mogalakwena, Waterberg District, Limpopo, South Africa, braggite is associated with sperrylite, cooperite, laurite and platinum (HOM).

At the Stillwater Complex, Montana, USA, braggite is associated with pentlandite, pyrrhotite, chalcopyrite, cubanite, nickel-bearing mackinawite, gold, cooperite, vysotskite, moncheite, isoferroplatinum, kotulskite, keithconnite and palladium-bearing tulameenite (HOM).

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