General Information:
Chemical Formula:
Mn++2Mn+++(AsO4)(OH)4
Composition:
(Molecular Weight = 371.76 gm)
Manganese 44.33 % Mn
Arsenic 20.15 % As
Hydrogen 1.08 % H
Oxygen 34.43 % O
Empirical Formula:
Mn2+2Mn3+(AsO4)(OH)4
Physical Properties:
Cleavage:
None
Color:
green, greenish brown, or dark greenish brown.
Density:
3.78
Diaphaniety:
Transparent
Hardness:
4.5 - Between Fluorite and Apatite
Luster:
Vitreous - Greasy
More details...