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Sternbergite with Argentopyrite & Prustite

#29266

Sternbergite with Argentopyrite & Prustite

#29266
Availability
Sold
Size
4 x 3.5 x 3 cm - Miniature 
Formula
AgFe2S3 (RRUFF)
Locality
Uranus mine, Annaberg-Buchholz, Erzgebirge, Saxony, Germany
Tagged
sulfide , silver

An excellent old, rich specimen with much Sternbergite showing as dark grey bladed crystals to about 0.3mm. Scattered about the specimen are deep red proustite crystals to 1mm and argentopyrite, both seen in the photos. 

Sternbergite

Formula
AgFe2S3 
Crystal System
Orthorhombic 
Crystal Habit
Radial, Twinning Common 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
blue violet, golden brown 
Streak
black 
Class
Orthorhombic - Dipyramidal 
Fracture
Flexible 
Hardness
1-1.5 

Data courtesy of Webmineral.

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