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Walpurgite

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CAM96454

Walpurgite

Description Tabs

Description
Locality: 
Schmiedestollen, Wittichen, Black Forest, Baden-Württemberg, Germany
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 5 × 2.5 cm
Largest Crystal: 
0.40cm
Description

Very nice example of walpurgite, a rare bismuth-uranyl-arsenate, with several light yellow tabular to lath-like walpurgite crystals up to 4 mm on matrix, associated with light green mixite.

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
Cartils Minerals

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