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Tetradymite & Montanite

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Tetradymite & Montanite

ex Americo Urbinati collection

Description Tabs

Description
Locality: 
Župkov, Žarnovica County, Banská Bystrica Region, Slovakia (Slovak Republic)
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.1 × 1.1 cm
Description

Lustrous metallic tetradymite from its type locality with yellowish balls of montanite

Mineral Data
What's on the rock

Tetradymite

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

Montanite

Formula: 
Bi2(TeO6) · 2H2O
Strunz: 
4/K.15-60
Type Locality: 
Highland District (Siberia District), Silver Bow Co., Montana, USA Or Fish Creek placers (Highland Gulch placers), Highland District (Siberia District), Silver Bow Co., Montana, USA...