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Brassite & Rösslerite

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ESM926966

Brassite & Rösslerite

Description Tabs

Description
Locality: 
Uranus Mine, Kleinrückerswalde, Annaberg-Buchholz, Erzgebirge, Saxony, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3 × 2 cm
Description

White brassite and colorless rösslerite crystals on matrix

Mineral Data
What's on the rock

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

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...