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Gold & Tsumoite

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PDM665667

Gold & Tsumoite

Description Tabs

Description
Locality: 
Björkdal Mine, Sandfors, Skellefte, Västerbotten County, Sweden
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3 × 2.6 cm
Description

Highly lustrous gold flakes of good size in a quartz matrix with tsumoite, a rare Bi telluride of silvery colour and intense metallic lustre, with greenish pyrite. The gold flakes and tsumoite crystals are spotted in various areas of the matrix. A good size specimen.

Ex Rik Dillen.

Mineral Data
What's on the rock

Gold

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

Tsumoite

Formula: 
BiTe
Strunz: 
2.DC.05
Hardness: 
2.5 - 3.0
Type Locality: 
Tsumo mine, Masuda, Shimane Prefecture, Chugoku Region, Honshu Island, Japan

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