Veszelyite

General Information:
 Chemical Formula:
(Cu,Zn)3(PO4)(OH)3·2(H2O)
 Composition:
(Molecular Weight = 374.04 gm)
Zinc 13.11 % Zn
Copper 38.22 % Cu
Phosphorus 8.28 % P 
Hydrogen 1.89 % H 
Oxygen 38.50 % O 
 Empirical Formula:
Cu2.25Zn0.75(PO4)(OH)3·2(H2O)
Physical Properties:
 Cleavage:
[001] Good, [110] Good
 Color:
blue green, green, or dark blue.
 Density:
3.4
 Diaphaniety:
Translucent
 Hardness:
3.5-4 - Copper Penny-Flourite
 Luster:
Vitreous (Glassy)
 Streak:
blue
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