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Walpurgite & Metatorbernite

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BCK664810

Walpurgite & Metatorbernite

Kay Robertson collection
Rare Mineral

Description Tabs

Description
Locality: 
Rovnost Mine, Jáchymov, Krušné Hory, Karlovy Vary Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 4.1 × 2.8 cm
Description

You are bidding on a small miniature sample with some pale yellow lathes of walpurgite on matrix with rich small crystals of metatorbernite. Walpurgite is very rare from Jachymov! From the Bruce J Murphy and Kay Robertson collections. 

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

Metatorbernite

Formula: 
Cu(UO2)2(PO4)2·8H2O
Strunz: 
8.EB.10
Hardness: 
2.5
Type Locality: 
Schneeberg District, Erzgebirge, Saxony, Germany

Seller Information

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