General Information:
Chemical Formula:
Fe++Fe+++2O4
Composition:
(Molecular Weight = 231.54 gm)
Iron 72.36 % Fe
Oxygen 27.64 % O
Empirical Formula:
Fe3+3O4
Name Origin:
From it's being attracted by a magnet.
Physical Properties:
Cleavage:
None
Color:
grayish black or iron black.
Density:
5.1 - 5.2, Average = 5.15
Diaphaniety:
Opaque
Habits:
Massive - Uniformly indistinguishable crystals forming large masses., Massive - Granular - Common texture observed in granite and other igneous rock., Crystalline - Fine - Occurs as w ell-formed fine sized crystals.
Hardness:
5.5-6 - Knife Blade-Orthoclase
Luminescence:
None.
Luster:
Metallic
Streak:
black
More details...