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Xanthoconite Polybasite & Proustite

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ESM811959

Xanthoconite Polybasite & Proustite

Description Tabs

Description
Locality: 
Ehrenfriedersdorf, Erzgebirge, Saxony, Germany
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 5 × 3 cm
Description

Orange colored xanthoconite crystals with metallic polybasite and deep red proustite (Lorenz Stehender 3. Sohle)

Mineral Data
What's on the rock

Xanthoconite

Formula: 
Ag3AsS3
Strunz: 
2.GA.10
Crystal System: 
Monoclinic
Hardness: 
2.0 - 3.0
Type Locality: 
Himmelsfürst Mine, Brand-Erbisdorf, Freiberg District, Erzgebirge, Saxony, Germany

Polybasite

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

Proustite

Formula: 
Ag3AsS3
Strunz: 
2.GA.05
Crystal System: 
Trigonal
Hardness: 
2.0 - 2.5