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Polybasite On Dolomite

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CLB92986

Polybasite On Dolomite

Description Tabs

Description
Locality: 
Hodruša-Hámre, Žarnovica County, Banská Bystrica Region, Slovakia (Slovak Republic)
Size Range: 
Cabinet (10-18 cm)
Size: 
14.7 × 8.9 × 5.8 cm
Description

Hundreds of tiny metallic polybasite crystals on a dolomite cast matrix. Originally labeled as "Modrusa, CSSR (Czech Republic).

Mineral Data
What's on the rock

Polybasite

Formula: 
[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]
Strunz: 
2.GB.15
Crystal System: 
Monoclinic - Prismatic
Hardness: 
2.5 - 3.0
Streak: 
black

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White

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