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Dufrénite

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GFM730082

Dufrénite

Description Tabs

Description
Locality: 
Ullersreuth, Hirschberg, Vogtland, Thuringia, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
0.5 × 1.7 × 1.7 cm
Description

lustrous bright deep dark-green to nearly black 3 mm spherical crystal aggregates, very rich on vugs in massive brownish Goethite matrix

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