General Information:
Chemical Formula:
(Ge++,Fe++)Fe+++2O4
Composition:
(Molecular Weight = 244.11 gm)
Iron 51.47 % Fe
Germanium 22.31 % Ge
Oxygen 26.22 % O
Empirical Formula:
Ge0.75Fe2+0.25Fe3+2O4
IMA Status:
Approved IMA 1972
Physical Properties:
Color:
gray or black.
Density:
5.51
Diaphaniety:
Opaque
Hardness:
4.5 - Between Fluorite and Apatite
Luster:
Sub Metallic
More details...