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Arsenolite Kaatialaite & Native Arsenic

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MNR754843

Arsenolite Kaatialaite & Native Arsenic

Classic Locality

Description Tabs

Description
Locality: 
Jáchymov, Krušné Hory, Karlovy Vary Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 5 × 3.7 cm
Description

Native Arsenic is overgrown with small crystals of white kaatialaite and  clear crystals of arsenolite in vugs. Very nice and rich specimen.

Mineral Data
What's on the rock

Arsenolite

Formula: 
As2O3
Strunz: 
4.CB.50
Crystal System: 
Isometric
Hardness: 
1.5
Type Locality: 
St Andreasberg, St Andreasberg District, Harz, Lower Saxony, Germany

Kaatialaite

Formula: 
Fe(H2AsO4)3·5H2O
Strunz: 
8.CC.10
Crystal System: 
Monoclinic
Hardness: 
0.0
Type Locality: 
Kaatiala pegmatite, Kuortane, Western and Inner Finland Region, Finland

Arsenic

Formula: 
As
Strunz: 
1.CA.05
Crystal System: 
Trigonal
Hardness: 
3.5
Streak: 
Grey