Class: phosphate
Rarity: Rare Crystal:  crystal with a massive amorphous cryptocrystalline reniform stalactitic habit 
Colour: blue green gray;   Streak: white green;   Lustre: resinous;   Transparency: subtranslucent opaque;
Tenacity: brittle;   Cleavage: none;   Fracture: conchoidal;  
Hardness - between 5 and: 6;   Density - between 2.6 and: 2.83
Dana number: 729

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