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Formula: Pt2FeNi
Platinum group alloy, forms a series with
tulameenite
Crystal System: Tetragonal
Hardness: 5
Colour: Silvery white
Common impurities: Ir,Cu
Environments
Localities
At the type locality, Placer deposit, Northern Pekul'ney River, Pekul'ney Range, Chukotka Autonomous Okrug, Russia,
ferronickelplatinum was found in the heavy fraction of alluvial deposits associated with
ultramafics from the ophiolite belt
of the region. It occurs in intergrowths of platinum-group minerals which occur as
grains ranging in size from 0.2-4.5 mm. Ferronickelplatinum occurs as a minor constituent, associated with
rutheniridosmine,
isoferroplatinum,
tetraferroplatinum, laurite,
irarsite, cooperite,
sperrylite, hollingworthite,
chromite, olivine and
cherepanovite
(AM 69.1190-1191, Mindat).
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