Image: Andrew Silver (Public domain)
cubiccommonOxides
Chromite
FeCr2O4
A dark, opaque, submetallic mineral, often appearing massive or granular, as shown in the image 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
ore of chromium, refractories, pigments, alloysAssociated Minerals
olivine, pyroxene, serpentine, magnetiteRarity
commonGeological Context
Chromite is typically found in ultramafic igneous rocks such as peridotite and dunite, often in layered intrusions and ophiolites. It also occurs in metamorphic rocks and placer deposits.
