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Walpurgite & Bismutite

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SHS576587

Walpurgite & Bismutite

Description Tabs

Description
Locality: 
Jáchymov, Krušné Hory, Karlovy Vary Region, Czech Republic
Class: 
Massive/Crystalline
Size Range: 
Micromount (under 1cm)
Size: 
0.3 × 0.3 × 0.3 cm
Description

Walpurgite and bismutite on matrix

Mineral Data
What's on the rock

Walpurgite

Formula: 
(BiO)4(UO2)(AsO4)2·3H2O
Strunz: 
8.EA.05
Hardness: 
3.5
Type Locality: 
Walpurgis Flacher vein, Weißer Hirsch Mine (Shaft 3), Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany

Bismutite

Formula: 
(BiO)2CO3
Strunz: 
5.BE.25
Crystal System: 
Tetragonal
Hardness: 
2.5 - 3.5
Streak: 
Grey
Type Locality: 
Arme Hilfe Mine, Ullersreuth, Hirschberg, Vogtland, Thuringia, Germany