Paradamite

General Information:
 Chemical Formula:
Zn2(AsO4)(OH)
 Composition:
(Molecular Weight = 286.71 gm)
Zinc 45.61 % Zn
Arsenic 26.13 % As
Hydrogen 0.35 % H 
Oxygen 27.90 % O 
 Empirical Formula:
Zn2(AsO4)(OH)
Physical Properties:
 Cleavage:
[010] Perfect
 Color:
light yellow.
 Density:
4.55
 Diaphaniety:
Transparent
 Hardness:
3.5 - Copper Penny
 Luster:
Vitreous (Glassy)
 Streak:
white
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