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Weilerite & Bariopharmacosiderite

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PJM163339

Weilerite & Bariopharmacosiderite

Description Tabs

Description
Locality: 
Clara Mine, Oberwolfach, Freiburg Region, Baden-Württemberg, Germany
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1.5 × 0.9 cm
Description

Transluent offwhite to traslucent greenish white crystals of weilerite ( a member of the beudantite- alunite supergroup ), with etched brown crystals of bariopharmacosiderite crytals on a quartz matrix

Weilerite composition; BaAl3 (AsO4)(SO4)(OH)6

Weilerite Reference: Tschermaks Mineralogische und Petrographische Mitteilungen (1966): 11: 121.;Bayliss, P., Kolitsch, U., Nickel, E.H. and Pring, A. (2010): Alunite supergroup: recommended nomenclature. Mineral. Mag. 74, 919-927.

Mineral Data
What's on the rock

Weilerite

Formula: 
BaAl3(AsO4)(SO4)(OH)6
Hardness: 
0.0
Type Locality: 
Michael Mine, Weiler, Reichenbach, Lahr, Black Forest, Baden-Württemberg, Germany

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
Earthstones Australia

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