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Formula: Rh17S15
Crystal System: Isometric
Sulphide of rhodium
Specific gravity: 7.42 calculated
Hardness: 5 to 6
Colour: Grey
Environments
Localities
At the type locality, the Miass River, Chelyabinsk Oblast, Russia, miassite occurs as rounded inclusions to
100 µm in fluvial placer deposits derived from ophiolites or layered
mafic intrusions. Associated minerals include
isoferroplatinum, cuprorhodsite,
bowieite, vasilite,
cooperite and keithconnite
(HOM).
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