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Platinum: Pt
Comments: Stream-worn, platinum nugget with chromite? Inclusions. Location: Rio Tinto, San Juan River Basin, Papayan, Cauca, Columbia. Scale: Picture size 1.5 cm. © Paul M. Schumacher
Platinum: Pt Cherepanovite: RhAs Cooperite: (Pt,Pd,Ni)S
Comments: Creamy-grayish fractured grains of cherepanovite with gray granular cooperite and white massive grains of iridian ruthenian platinum. Polished section in reflected light. Location: Placer Deposit, Northern Pekul'nei River, Pekul'nei Range, Chukotka (Tchukotka) Okrug, Chukot Peninsula, Far-Eastern Region, Russia. Scale: Picture size 0.12 mm. © Thomas Witzke / Abraxas-Verlag
Comments: Crystallized platinum nugget. Location: Russia. Scale: 0.5 x 0.7 cm. © Fabre Minerals