GEOLOGY & PLANETARY SCIENCE A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site chromite Chromite Image source: Mineral Information Institute A hard black spinel mineral, an iron (II) chromium (III) mixed oxide (FeOCr2O3); it is the only important ore of chromium. Chromite separates from magma when igneous rocks first form, occurring as octahedral crystals and as granular masses. It is weakly magnetic and opaque. The vast majority of the world's chromite is found in South Africa and Zimbabwe. Hardness 5.5, relative density 4.6. Related category    • GEOLOGY AND PLANETARY SCIENCE Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP