Minerals

LAZULITE (MgAl2(PO4)2(OH)2)
Class: phosphate
Rarity: Very Rare Crystal:  crystal with a massive granular habit 
Colour: blue;   Streak: white;   Lustre: vitreous;   Transparency: subtranslucent opaque;
Tenacity: brittle;   Cleavage: indistinct;   Fracture: uneven;  
Hardness - between 5 and: 6;   Density - between 3.1 and: 3.1
Dana number: 717




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