General Information:
Chemical Formula:
gamma-Fe+++2O3
Composition:
(Molecular Weight = 159.69 gm)
Iron 69.94 % Fe
Oxygen 30.06 % O
Empirical Formula:
Fe3+2O3
Locality:
Iron mountain mine, 9.5 miles NW of Redding, Shasta Co., California.
Physical Properties:
Cleavage:
None
Color:
dark brown.
Density:
4.9
Diaphaniety:
Opaque
Habits:
Massive - Uniformly indistinguishable crystals forming large masses., Massive - Granular - Common texture observed in granite and other igneous rock.,
Hardness:
6 - Orthoclase
Luster:
Metallic
Streak:
brown
More details...