General Information:
Chemical Formula:
Mn7(AsO4)2(OH)8
Composition:
(Molecular Weight = 798.46 gm)
Manganese 48.16 % Mn
Arsenic 18.77 % As
Hydrogen 1.01 % H
Oxygen 32.06 % O
Empirical Formula:
Mn2+7(AsO4)2(OH)8
IMA Status:
Accepted IMA 1973
Locality:
TL: Sweden, Nordmark, Moss mn
Physical Properties:
Cleavage:
[???] Good
Color:
brown red, greenish brown, purple red, or pink.
Density:
3.83
Diaphaniety:
Translucent
Hardness:
4.5 - Between Fluorite and Apatite
Luster:
Vitreous - Greasy
More details...