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Gold With Tetradymite & Tellurobismuthite

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LGM610645

Gold With Tetradymite & Tellurobismuthite

Ex Lehnen collection, Möchgengladbach, Germany
Classic Locality

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Description Tabs

Description
Locality: 
Boliden Mine, Boliden, Skellefteå, Västerbotten County, Sweden
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 2.2 × 0.7 cm
Weight: 
1.50gr
Description

A fine and very rich example of Boliden gold, accompanied by silvery, mirror-like tellurobismutite and more matte-glossy tetradymite on quartz matrix.

Found in 1938, comes with detailled description. Translation:
Gold,
Tellurobismutite, with mirror-like luster, major areas
Tetradymite, with matte, rough surface, more soft and fine-grained than tellurobismutite
in quartz-filled fissures in rutile lenses in quartzous tourmaline rock near to lamprophyre veins (quartz-tourmaline-gold ore) - 250 m level, Stope 28, 1938
Boliden Mine, Skellefte Feltet, Västerbotten, North Sweden
 

Mineral Data
What's on the rock

Gold

Formula: 
Au
Strunz: 
1.AA.05
Crystal System: 
Isometric
Hardness: 
2.5 - 3.0

Tetradymite

Formula: 
Bi2Te2S
Strunz: 
2.DC.05
Hardness: 
1.5 - 2.0
Type Locality: 
Župkov, Žarnovica Co., Banská Bystrica Region, Slovakia

Tellurobismuthite

Formula: 
Bi2Te3
Strunz: 
2.DC.05
Crystal System: 
Trigonal
Hardness: 
1.5 - 2.0
Colour: 
Lead-grey
Type Locality: 
Boly Field Mine (Field's Mine; Field's vein), Dahlonega, Lumpkin Co., Georgia, USA...

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