General Information:
Chemical Formula:
(Fe++,Mn)Fe+++2(PO4)2(OH)2
Composition:
(Molecular Weight = 391.27 gm)
Manganese 3.51 % Mn
Iron 39.25 % Fe
Phosphorus 15.83 % P
Hydrogen 0.52 % H
Oxygen 40.89 % O
Empirical Formula:
Fe2+0.75Mn2+0.25Fe3+2(PO4)2(OH)2
Physical Properties:
Color:
green gray, olive green, or black.
Density:
3.66
Diaphaniety:
Opaque
More details...