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Polybasite-Tac

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WND851386

Polybasite-Tac

Classic Locality

Description Tabs

Description
Locality: 
Clara Mine, Oberwolfach, Freiburg Region, Baden-Württemberg, Germany
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.4 × 2.9 × 1.9 cm
Description

This interesting specimen features a large fragment of rare silver-sulfosalt Polybasite-Tac from the famous Clara Mine in the Black Forest. It has a steel-gray colour with a slightly tarnished metallic sheen.Previously known as "Antimonpearceite", which was originally described from Sonora, Mexico. Was renamed during a nomenclature change in 2006 (Bindi et al., 2007).

Mineral Data
What's on the rock

Polybasite-Tac

Polytype Of: 

Polybasite

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

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