General Information:
Chemical Formula:
Fe+++PO4
Composition:
(Molecular Weight = 150.82 gm)
Iron 37.03 % Fe
Phosphorus 20.54 % P
Oxygen 42.43 % O
Empirical Formula:
Fe3+(PO4)
Physical Properties:
Cleavage:
[100] Good, [010] Indistinct
Color:
brownish black, violet brown, greenish brown, dark brown, or dark pink.
Density:
3.409
Diaphaniety:
Subtranslucent to Opaque
Hardness:
4-4.5 - Between Fluorite and Apatite
Luster:
Silky
Streak:
brown red
More details...