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Chromite

Chromite. Composition Grades and types of ore Uses Locations Production Stratiform vs Podiform. Composition: Spinel Prism. Grades and Types of ore. Metallurgical: 45-56% Cr 2 O 3 Refractory 30-44% Cr 2 O 3 , 25-30% Al 2 O 3 Chemical ≥ 44% Cr 2 O 3. Uses. Stainless Steel

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Chromite

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  1. Chromite • Composition • Grades and types of ore • Uses • Locations • Production • StratiformvsPodiform

  2. Composition: Spinel Prism

  3. Grades and Types of ore • Metallurgical: 45-56% Cr2O3 • Refractory 30-44% Cr2O3, 25-30% Al2O3 • Chemical ≥ 44% Cr2O3

  4. Uses • Stainless Steel • Furnace Linings • Chemical industry • Dyes and pigments • Inks • Tanning

  5. Years 2001-05; Papp, 2007

  6. Years 2001-05; Papp, 2007

  7. Data from USGS Commodity Web Site

  8. Two Types of Chromite Ore Stratiform Podiform Occur as lenses, pods, or slabs within Alpine-type um rocks and/or ophiolites Compositionally rocks are overall peridotites—usually serpentinized Interpreted to be broken up layers • Parallel layers from mm to m in thickness • Laterally continuous • Crystal settling in a mafic/um magma; usually cyclic in nature; mono or bimineralic in nature • Bushveld, Great Dyke; Stillwater; Bird River Sill, Muscox Intrusion

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