Image: Andrew Silver (Public domain)
cubiccommonOxides
Chromite
FeCr2O4
The image displays a dark, black, massive to granular specimen of chromite, appearing somewhat dull to submetallic, with a pen for scale.
Chromite Physical Properties
Mohs Hardness
5.5Crystal System
cubicLuster
vitreousStreak Color
brownish blackCleavage
noneFracture
unevenSpecific Gravity
4.5Colors
black, brownish blackTransparency
opaqueType Locality
unknownMineral Group
OxidesUses
chromium ore, refractory material, pigments, chemical industryAssociated Minerals
olivine, pyroxene, serpentine, magnetiteRarity
commonGeological Context
Chromite is typically found in ultramafic igneous rocks such as peridotites and serpentinites, often occurring in layered intrusions and ophiolite complexes, where it crystallizes early from magma.
