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Allanpringite & Cacoxenite

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RSL694623

Allanpringite & Cacoxenite

Description Tabs

Description
Locality: 
Mark Mine, Weinbach, Limburg-Weilburg, Giessen Region, Hesse, Germany
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 2 × 1.5 cm
Description

Aggregate of allanpringite crystals, with a yellowish tone, accompanied by cacoxenite. Allanpringite is the monoclinic-pseudoorthorhombic Fe3+-analogue of the orthorhombic Al-phosphate wavellite. In a goethite and quartz matrix.

Mineral Data
What's on the rock

Allanpringite

Formula: 
Fe3+3(PO4)2(OH)3·5H2O
Strunz: 
8.DC.50
Hardness: 
3.0
Type Locality: 
Mark Mine, Essershausen, Weilburg, Wetzlar, Hesse, Germany

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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