Arsenoclasite

General Information:
 Chemical Formula:
Mn5(AsO4)2(OH)4
 Composition:
(Molecular Weight = 620.56 gm)
Manganese 44.27 % Mn
Arsenic 24.15 % As
Hydrogen 0.65 % H 
Oxygen 30.94 % O 
 Empirical Formula:
Mn2+5(AsO4)2(OH)4
Physical Properties:
 Cleavage:
[010] Perfect
 Color:
orange brown or red.
 Density:
4.16
 Diaphaniety:
Transparent
 Hardness:
5-6 - Between Apatite and Orthoclase
 Luster:
Adamantine
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