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Rösslerite

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TPX930903

Rösslerite

Classic Locality

Description Tabs

Description
Locality: 
Jáchymov, Krušné Hory, Karlovy Vary Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.1 × 5 × 4.2 cm
Weight: 
172.00gr
Description

Very interesting specimen of Rösslerite crystals on matrix from this famous Czech deposit. The piece is very old, it dates back to the early 1990s and today, due to dehydration, it has a white surface layer on a large part of the surface that has become Brassite.
Old label is attached.

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...

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