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Where Is Chromium Mined

201999chromite, a brownish black cubic mineral belonging to the spinel group, is the only ore mineral from which metallic chromium and chromium compounds are obtainedt has the chemical formula fecr 2 o 4, and a theoretical composition of 32 feo and 68 cr 2 o 3n its natural form it occurs in solid solution with other minerals in the spinel.