Cahnite

General Information:
 Chemical Formula:
Ca2B(AsO4)(OH)4
 Composition:
(Molecular Weight = 297.91 gm)
Calcium 26.91 % Ca
Boron 3.63 % B 
Arsenic 25.15 % As
Hydrogen 1.35 % H 
Oxygen 42.96 % O 
 Empirical Formula:
Ca2B(AsO4)(OH)4
Physical Properties:
 Cleavage:
[???] Perfect
 Color:
colorless or white.
 Density:
3.16
 Diaphaniety:
Transparent
 Hardness:
3 - Calcite
 Luminescence:
Non-fluorescent.
 Luster:
Vitreous (Glassy)
 Streak:
white
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