Minerals

DUFRENITE (Fe5(PO4)3(OH)5.2(H2O))
Class: phosphate
Rarity: Very Rare Crystal:  crystal with a massive radiated fibrous habit Magnetic after heating
Colour: green yellow brown;   Streak: green;   Lustre: silky;   Transparency: subtranslucent opaque; Cleavage: perfect distinct;   Fracture: unknown;  
Hardness - between 3.5 and: 4;   Density - between 3.2 and: 3.4
Dana number: 716




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