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Pharmacolite Rösslerite & Picropharmacolite

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CZM121622

Pharmacolite Rösslerite & Picropharmacolite

Classic Locality

Description Tabs

Description
Locality: 
Jáchymov, Krušné Hory, Karlovy Vary Region, Czech Republic
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4 × 1 cm
Description

Nice sharp yellowish farmakolite crystals to 7 mm with glassy lustre associates with unaltered rösslerite crystals to 8 mm and small picrofarmakolite spheres.

Mineral Data
What's on the rock

Pharmacolite

Formula: 
Ca(HAsO4)·2H2O
Strunz: 
8.CJ.50
Crystal System: 
Monoclinic
Hardness: 
2.0 - 2.5
Streak: 
White
Type Locality: 
Sophia Mine, Böckelsbach valley, Wittichen, Schenkenzell, Black Forest, Baden-Württemberg, Germany

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...

Picropharmacolite

Formula: 
Ca4Mg(AsO4)2(HAsO4)2·11H2O
Strunz: 
8.CH.15
Crystal System: 
Monoclinic Needles and encrustations
Hardness: 
1.0 - 2.0
Streak: 
White
Type Locality: 
Ore dumps, Richelsdorf Smelter, Süss, Richelsdorf District, Hesse, Germany

Seller Information

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