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Rösslerite & Brassite

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BCK211221

Rösslerite & Brassite

Type Locality

Description Tabs

Description
Locality: 
Bieber, Biebergemünd, Main-Kinzig, Darmstadt, Hesse, Germany
Size Range: 
Thumbnail (1-3cm)
Size: 
1.9 × 1.2 × 1 cm
Description

You are bidding on a small specimen with a few colorless, sharp crystals of rosslerite and many crystals that have altered to 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

Seller Information

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