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Vysokýite & Štěpite

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UVM623686

Vysokýite & Štěpite

Radioactive

Description Tabs

Description
Locality: 
Svornost Mine, Jáchymov, Krušné Hory, Karlovy Vary Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 1.2 × 1.5 cm
Description

Fibrous green vysokyite with with small green crystals of stepite in association.   These species are the only U4+ arsenate minerals known.   This material was collected decades ago and only approved in 2012.

Mineral Data
What's on the rock

Vysokýite

Formula: 
U4+[AsO2(OH)2]4•4H2O
Hardness: 
2.0 - 0.0
Type Locality: 
Geschieber vein, Svornost Mine (Einigkeit Mine), Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Štěpite

Formula: 
U(AsO3OH)2·4H2O
Hardness: 
0.0
Type Locality: 
Geschieber vein, Svornost Mine (Einigkeit Mine), Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

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