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Polybasite-Tac & Bariopharmacosiderite

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HCH525213

Polybasite-Tac & Bariopharmacosiderite

Description Tabs

Description
Locality: 
Clara Mine, Wolfach, Black Forest, Baden-Württemberg, Germany
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3 × 2 cm
Largest Crystal: 
0.70cm
Description

A 7 mm large pseudohexagonale crystal of Polybasite-TAC, party covered by brownish Bariopharmakolith cubes up to 0.5 mm large in a vug of Baryte.

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

Bariopharmacosiderite

Formula: 
Ba0.5Fe3+4(AsO4)3(OH)4·5H2O
Strunz: 
8.DK.10
Crystal System: 
Tetragonal
Hardness: 
2.5
Type Locality: 
Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany

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