General Information:
Chemical Formula:
Fe++Fe+++2(PO4)2(OH)2·4(H2O)
Composition:
(Molecular Weight = 463.56 gm)
Iron 36.14 % Fe
Phosphorus 13.36 % P
Hydrogen 2.17 % H
Oxygen 48.32 % O
Empirical Formula:
Fe2+Fe2+2(PO4)2(OH)2·4(H2O)
IMA Status:
Approved IMA 1974
Physical Properties:
Cleavage:
[100] Good
Color:
brown, greenish brown, light yellow brown, or dark brown.
Density:
2.87
Diaphaniety:
Transparent to Translucent
Hardness:
3 - Calcite
Luster:
Vitreous - Adamantine
More details...