ERYTHRITE (Co3(AsO4)2.8(H2O))
Class: phosphate
Rarity: Very Rare Crystal:  crystal with a striated globular reniform columnar stellated habit 
Colour: red gray;   Streak: red gray;   Lustre: pearly adamantine vitreous earthy;   Transparency: transparent subtranslucent;
Tenacity: sectile;   Cleavage: perfect;   Fracture: unknown;  
Hardness - between 1.5 and: 2.5;   Density - between 2.95 and: 2.95
Dana number: 722

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