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Dufrénite

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MEX94694

Dufrénite

Type Locality

Description Tabs

Description
Locality: 
Hoff auf mich Mine, Ullersreuth, Vogtland, Thuringia, Germany
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.3 × 4 × 3.8 cm
Description

Dufrenite spherulite on botryoidal goethite. The spherulite are built up of crystals.

The colour is greenish brown to brown. Very rich specimen with balls and spherulites to 5 mm diameter.

Mineral Data
What's on the rock

Dufrénite

Formula: 
Ca0.5Fe2+Fe3+5(PO4)4(OH)6·2H2O
Strunz: 
8.DK.15
Hardness: 
3.5 - 4.5
Streak: 
Green
Type Locality: 
Anglar, Haute-Vienne, Limousin, France