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Formula: Pt3Sn
Alloy of platinum and tin
Crystal System: Isometric
Specific gravity: 15.08 calculated
Hardness: 5
Colour: White with a yellow tint
Environments
Localities
At the type locality, Rustenburg Town & Townlands Farm, Rustenburg, Rustenburg Local Municipality, Bojanala Platinum
District Municipality, North West, South Africa, rustenburgite occurs as very sparse grains in concentrates.
Associated minerals include atokite and unspecified
platinum tellurides
(HOM).
At the Stillwater Complex, Montana, USA, rustenburgite is associated with
moncheite, pyrrhotite and
pentlandite
(HOM).
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