Chromite is found as orthocumulate lenses of chromitite in peridotite from the Earth's mantle. It also occurs in layered ultramafic intrusive rocks.[7] In addition, it is found in metamorphic rocks such as some serpentinites. Ore deposits of chromite form as early magmatic differentiates. It is commonly associated with olivine, magnetite, serpentine, and corundum. The vast Bushveld igneous complex of South Africa is a large layered mafic to ultramafic igneous body with some layers consisting of 90% chromite making the rare rock type, chromitite.[8] The Stillwater igneous complex in Montana also contains significant chromite
n 2002 14,600,000 metric tons of chromite were mined. The largest producers were South Africa (44%), India (18%),[13] Kazakhstan (16%), Zimbabwe (5%), Finland (4%), Iran (4%), and Brazil (2%), with several other countries producing the rest of less than 10% of the world production