Chromite

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Mineral class:Oxides and Hydroxides
Composition:FeCr2O4
Hardness:5.5
Luster:Metallic or nearly metallic
Color:Black
Streak:Dark brown
Crystal form:Massive, granular, compact
Environment:Ultramafic igneous rocks
Uses:Most common chromium ore. Used in steel-making.
Comments:[chromite.jpg]