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Pilsenite Tsumoite & Native Gold

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JYJ708035

Pilsenite Tsumoite & Native Gold

Description Tabs

Description
Locality: 
Björkdal Mine, Sandfors, Skellefte, Västerbotten County, Sweden
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.3 × 1.4 cm
Description

SEM-EDS confirmed pilsenite & tsumoite associated with native gold on quartz. 

Analysis is attached. 

Mineral Data
What's on the rock

Pilsenite

Formula: 
Bi4Te3
Strunz: 
2.DC.05
Hardness: 
1.5 - 2.5
Colour: 
Lead-gray
Type Locality: 
Nagybörzsöny (Deutsch Pilsen; Deutschpilsen), Börzsöny Mts, Pest Co., Hungary

Tsumoite

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

Gold

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