Villyaellenite

General Information:
 Chemical Formula:
Mn++5(AsO3OH)2(AsO4)2·4(H2O)
 Composition:
(Molecular Weight = 904.44 gm)
Manganese 30.37 % Mn
Arsenic 33.13 % As
Hydrogen 1.11 % H 
Oxygen 35.38 % O 
 Empirical Formula:
Mn2+5(AsO3OH)2(AsO4)2·4(H2O)
 IMA Status:
Approved IMA
Physical Properties:
 Cleavage:
None
 Color:
colorless or light pink.
 Density:
3.2
 Diaphaniety:
Transparent
 Hardness:
4 - Fluorite
 Luster:
Vitreous (Glassy)
 Streak:
white
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