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Bohdanowiczite & Naumannite

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JYJ745519

Bohdanowiczite & Naumannite

Description Tabs

Description
Locality: 
Clara Mine, Oberwolfach, Freiburg Region, Baden-Württemberg, Germany
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
1.4 × 1.3 × 1.1 cm
Description

Grey metallic bohdanowiczite (core) intergrown with naumannite (surrounding) in fluorite matrix. 

Rare mineral. 

 

Mineral Data
What's on the rock

Bohdanowiczite

Formula: 
AgBiSe2
Strunz: 
2.JA.20
Crystal System: 
Trigonal
Hardness: 
3.0 - 3.5
Type Locality: 
Kletno, Kłodzko District, Lower Silesia (Dolnośląskie), Poland

Naumannite

Formula: 
Ag2Se
Strunz: 
2.BA.55
Crystal System: 
Orthorhombic
Hardness: 
2.5
Streak: 
black
Type Locality: 
Tilkerode (Abberode), Harz, Saxony-Anhalt, Germany