Wickmanite

General Information:
 Chemical Formula:
Mn++Sn++++(OH)6
 Composition:
(Molecular Weight = 377.74 gm)
Manganese 14.54 % Mn
Tin 31.43 % Sn
Hydrogen 3.20 % H 
Oxygen 50.83 % O 
 Empirical Formula:
Mn2+2(OH)6Sn
 IMA Status:
Approved IMA 1967
Physical Properties:
 Color:
yellow, orange brown, yellow orange, or colorless.
 Density:
3.89
 Diaphaniety:
Transparent
 Hardness:
4-4.5 - Between Fluorite and Apatite
 Luster:
Vitreous (Glassy)
 Streak:
white
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