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Clausthalite & Naumannite

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JYJ960924

Clausthalite & Naumannite

Description Tabs

Description
Locality: 
Virgen de Surumi Mine, Pakajake Canyon, Chayanta Province, Potosi Department, Bolivia
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.3 × 2 × 1.5 cm
Description

Very rich specimen hosting a cm long vein of clausthalite, penroseite (yellow metallic) and naumannite in siderite matrix. In the siderite cavities well developed clausthalite and minor naumannite crystals can be found. 

 

Mineral Data
What's on the rock

Clausthalite

Formula: 
PbSe
Strunz: 
2.CD.10
Hardness: 
2.5 - 3.0
Type Locality: 
St Lorenz Mine, Burgstatt veins, Clausthal-Zellerfeld, Harz, Lower Saxony, Germany

Naumannite

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