General Information:
Chemical Formula:Mn7(AsO4)2(OH)8
Composition:(Molecular Weight = 798.46 gm)Manganese 48.16 %
MnArsenic 18.77 %
AsHydrogen 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
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