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Bismuthinite & Magnetite

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MCH201747

Bismuthinite & Magnetite

Description Tabs

Description
Locality: 
Gjellebekk Marble Quarry, Lierskogen, Lier, Viken, Norway
Size Range: 
Thumbnail (1-3cm)
Size: 
2.1 × 1.6 × 1.1 cm
Description

A specimen from the old Gjellebekk iron and bismuth mine: a high lustrous crystalline aggregate of bright silvery bismuthinite associated with numerous dark grey magnetite crystals and a little bit of chalcopyrite.

Mineral Data
What's on the rock

Bismuthinite

Formula: 
Bi2S3
Strunz: 
2.DB.05
Hardness: 
2.0 - 2.5
Streak: 
Lead-gray

Magnetite

Formula: 
Fe2+Fe3+2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
5.5 - 6.5
Streak: 
Black

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