General Information:
Chemical Formula:
MnFe+++2(PO4)2(OH)2·(H2O)
Composition:
(Molecular Weight = 408.60 gm)
Manganese 13.45 % Mn
Iron 27.34 % Fe
Phosphorus 15.16 % P
Hydrogen 0.99 % H
Oxygen 43.07 % O
Empirical Formula:
Mn2+Fe3+2(PO4)2(OH)2·(H2O)
IMA Status:
Approved IMA 1976
Physical Properties:
Cleavage:
[???] Good
Color:
bronze, greenish brown, dark reddish brown, or reddish brown.
Density:
3.31
Diaphaniety:
Translucent
Hardness:
3.5-4 - Copper Penny-Flourite
Luster:
Vitreous - Dull
Streak:
yellowish brown
More details...