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Platinum

MNHN N°200.129

visu_524 infos

FROM : Konder, Khabarovsky Kray, Russia
SIZE : 5.3 x 3.7 x 2.8 cm
WEIGHT : 4.6055 gr

general description

Here are two cubic platinum crystals imbricated (twin). Platinum crystals are steel gray with a metallic lustre. This sample measures 5.3 x 3.7 x 2.8 cm and weighs 4.6055 grams.

This specimen has been discovered in Russia in the Konder Massif. The Muséum national d’Histoire naturelle could obtain it thanks to support from Total.

This sample is currently exposed in the Treasure Room, within the Gallery of Mineralogy of the Muséum.

Photography: A. Dahmane / Photo Saint-Hilaire,
© MNHN.

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The Species page

Identity card

SPECIE : Platinum

HISTORY : Name from the Spanish "platina", diminutive of "plata" meaning "silver"

Species described in 1750 by William Brownrigg (1712-1800), English physician and chemist

Type-locality: Pinto river, Papayan, Cauca region, Colombia

CHEMICAL FORMULA : Pt
CRYSTAL SYSTEM : Cubic
COLOR : Steel gray to dark gray
DIAPHANIETY : Opaque
LUSTER : Metallic
STREAK : Steel gray
MORPHOLOGY : Cubic crystals, stretched ; seldomly as nuggets
HARDNESS : 4,0-4,5
DENSITY : 21,472

CHEMICAL CLASS : I - Éléments natifs
GROUP : Rhodium
STRUNZ CLASS BEFORE 2001 : 1/A.14-70
STRUNZ CLASS AFTER 2001 : 1.AF.10

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