General Information:
Chemical Formula:
FeO(OH)
Composition:
(Molecular Weight = 88.85 gm)
Iron 62.85 % Fe
Hydrogen 1.13 % H
Oxygen 36.01 % O
Empirical Formula:
Fe3+O(OH)
Environment:
Common in iron ore deposits.
Locality:
Common world wide.
Name Origin:
From the Greek lipis - "scale" and krokis - "fibre."
Physical Properties:
Cleavage:
[010] Perfect
Color:
red, yellowish brown, or blackish brown.
Density:
4
Diaphaniety:
Opaque
Habits:
Scaly - Morphology like fish scales., Fibrous - Crystals made up of fibers., Pulverulent - Forms a loose, poorly-coherent powdery mass.
Hardness:
5 - Apatite
Luminescence:
None.
Luster:
Sub Metallic
Streak:
dark yellow brown
More details...