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Rösslerite & Brassite

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CHA599114

Rösslerite & Brassite

Classic Locality

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Description
Locality: 
Svornost Mine, Jáchymov, Krušné Hory, Karlovy Vary Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3.2 × 2.3 cm
Description

specimen with some colourless good crystals of rosslerite with associate white brassite

Mineral Data
What's on the rock

Rösslerite

Formula: 
Mg(HAsO4)·7H2O
Strunz: 
8.CE.20
Crystal System: 
Monoclinic Fibrous crusts
Hardness: 
2.0 - 3.0
Streak: 
White
Type Locality: 
"Im Lochborn" Copper mine, Bieber, Gelnhausen, Spessart, Hesse, Germany...

Brassite

Formula: 
Mg(HAsO4)·4H2O
Strunz: 
8.CE.15
Crystal System: 
Orthorhombic
Hardness: 
0.0
Colour: 
White
Streak: 
White
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

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