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Platinum
Pt
A silvery-white, metallic native platinum nugget, approximately 35 × 23 × 14 mm in size and weighing about 112g, exhibiting a characteristic irregular, rounded shape.
Platinum Physical Properties
Mohs Hardness
3.5Crystal System
cubicLuster
metallicStreak Color
steel-gray to silver-whiteCleavage
noneFracture
hacklySpecific Gravity
21.45Colors
silver-white, steel-grayTransparency
opaqueType Locality
Kondyor mine, Khabarovsk Krai, RussiaMineral Group
Native ElementsUses
jewelry, catalytic converters, laboratory equipment, dentistry, electrical contacts, medical implants, investmentAssociated Minerals
chromite, olivine, pyroxene, magnetite, gold, iridium, osmiumRarity
rareGeological Context
Platinum occurs as native metal in placer deposits, often derived from the weathering of ultramafic igneous rocks such as dunites and peridotites, and also in primary deposits within these same rocks, frequently associated with chromite.
