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Billingsleyite & Polybasite-Tac

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JYJ939130

Billingsleyite & Polybasite-Tac

Description Tabs

Description
Locality: 
Clara Mine, Oberwolfach, Freiburg Region, Baden-Württemberg, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.3 × 3.5 × 2.6 cm
Description

Grey metallic polybasite-Tac associated with pink luzonite on grey billingsleyite  in quartz cavities. 

 

Mineral Data
What's on the rock

Billingsleyite

Formula: 
Ag7AsS6
Strunz: 
2.KB.05
Hardness: 
2.5
Type Locality: 
North Lily Mine (International Smelting Company; Wicklow), East Tintic District, East Tintic Mts, Utah Co., Utah, USA

Polybasite-Tac

Polytype Of: 

Polybasite

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