Chromite
Chrome ore is one of the most useful mineral due to its usage in production of metallic chromium, used as an alloying ingredient in stainless and tool steels. Chromite is also used as refectory material due to its high heat stability.
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General Information
Category: Oxide minerals (Spinel group)
Formula: (Fe, Mg)Cr2O4
Crystal system: Isometric
Crystal class: Hexoctahedral (m3m)
Properties
It is dark gray to black in color with a metallic to submetallic luster and a high specific gravity. It occurs in basic and ultrabasic igneous rocks and in the metamorphic and sedimentary rocks that are produced when chromite-bearing rocks are altered by heat or weathering.
