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Beraunite Crandallite & Cacoxenite

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CLB116567

Beraunite Crandallite & Cacoxenite

Classic Locality

Description Tabs

Description
Locality: 
Mark Mine, Weinbach, Limburg-Weilburg, Giessen Region, Hesse, Germany
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.1 × 2.5 × 2 cm
Description

A very good sample with radiating rust-red beraunite crystals, a nice little vug with botryoidal cacoxenite and several colorless to white, partly transparent crandallite crystals.

Mineral Data
What's on the rock

Beraunite

Formula: 
Fe2+Fe3+5(PO4)4(OH)5·6H2O
Group Parent: 
Beraunite Group
Strunz: 
8.DC.27
Crystal System: 
Monoclinic
Hardness: 
3.0 - 4.0
Type Locality: 
Hrbek Mine, Svatá Dobrotivá (St Benigna), Beroun (Beraun), Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic

Crandallite

Formula: 
CaAl3(PO4)2(OH)5·H2O
Strunz: 
8.BL.10
Crystal System: 
Trigonal
Hardness: 
5.0
Streak: 
White
Type Locality: 
Brooklyn Mine, Silver City, Tintic District, East Tintic Mts, Juab Co., Utah, USA

Cacoxenite

Formula: 
Fe3+24Al(PO4)17O6(OH)12·17H2O
Strunz: 
8.DC.40
Hardness: 
3.0 - 4.0
Type Locality: 
Hrbek Mine, Svatá Dobrotivá (St Benigna), Beroun (Beraun), Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic

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