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Minerals - Chromite | TerraCollect
Mineral - Chromite
Chromite
FeÂČâșCrâOâ
Chemical Properties
Mineral Class
Oxides and Hydrxides
Toxicity
none
Formula
FeÂČâșCrâOâ
Unit Cell
Physical Properties
Hardness
5.5
Streak
brown
Density
Heavy (3,5-6)
Optical Properties
Color
black
Birefringence
Luster
Metallic
Transparency
opaque
Pleochroism
Geomineralogical Properties
Crystal System
isometric
Point Group
Groups and Members
Spinel-Supergroup
Oxyspinel-Group
Spinel-Subgroup
Cleavage
Fracture
Tenacity
Brittle
hexoctahedral - 4/m
3
2/m
Space Group
Fd
3
m (227)
Habit
Octahedron
Formation
In orthomagmatic deposits, through metamorphism in serpentinites, in meteorites
Paragenesis
Twinning
Rarity
Rather rare
Synonyms
Chromite
