General Information:
Chemical Formula:
Mn++2(AsO4)(OH)
Composition:
(Molecular Weight = 265.80 gm)
Manganese 41.34 % Mn
Arsenic 28.19 % As
Hydrogen 0.38 % H
Oxygen 30.10 % O
Empirical Formula:
Mn2+2(AsO4)(OH)
Physical Properties:
Cleavage:
[100] Distinct
Color:
yellow, dark red, or reddish yellow.
Density:
4.08 - 4.18, Average = 4.13
Hardness:
4-5 - Fluorite-Apatite
Luster:
Greasy (Oily)
Streak:
yellow
More details...