Minerals

VIVIANITE (Fe3(PO4)2.8(H2O))
Class: phosphate
Rarity: Very Rare Crystal:  crystal with a reniform golbular divergent fibrous habit Magnetic after heating
Colour: green blue colorless;   Streak: colorless white brown blue;   Lustre: pearly vitreous;   Transparency: transparent translucent opaque;
Tenacity: sectile;   Cleavage: perfect in traces;   Fracture: splintery;  
Hardness - between 1.5 and: 2;   Density - between 2.58 and: 2.68
Dana number: 721




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