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Pearceite-Tac Chalcopyrite & Arsenopyrite

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SCH67878

Pearceite-Tac Chalcopyrite & Arsenopyrite

Description Tabs

Description
Locality: 
Clara Mine, Oberwolfach, Freiburg Region, Baden-Württemberg, Germany
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 1.8 × 1.7 cm
Description

A nice pearceite crystal in set in a small cavity and associated with shiny golden chalcopyrite crystals. Scattered over the whole specimen are dozens of arsenopyrite twins. Beautiful under the lens!

Mineral Data
What's on the rock

Pearceite-Tac

Polytype Of: 

Pearceite

Formula: 
[(Ag,Cu)6(As,Sb)2S7][Ag9CuS4]
Strunz: 
2.GB.15
Hardness: 
2.5 - 3.0

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0

Arsenopyrite

Formula: 
FeAsS
Strunz: 
2.EB.20
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
schani

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