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MAJOR MINERAL SUITES

MAJOR MINERAL SUITES . Elements Metallic :Au, Ag, Cu Rarely Pt, Hg, As, Fe (meteorites) Not Al, Pb, Zn, Fe, etc. Nonmetallic: C - Diamond, Graphite Sulfur . MAJOR MINERAL SUITES. Sulfides: Dense, Usually Metallic Many Major Ores, Often Isometric Pyrite FeS 2 Chalcopyrite CuFeS 2

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MAJOR MINERAL SUITES

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  1. MAJOR MINERAL SUITES Elements Metallic:Au, Ag, Cu • Rarely Pt, Hg, As, Fe (meteorites) • Not Al, Pb, Zn, Fe, etc. Nonmetallic: C - Diamond, Graphite • Sulfur

  2. MAJOR MINERAL SUITES Sulfides: Dense, Usually MetallicMany Major Ores, Often Isometric • Pyrite FeS2 • Chalcopyrite CuFeS2 • Galena PbS • Sphalerite ZnS2 • Molybdenite MoS2 Sulfosalts: S + As, Se, etc. • Arsenopyrite FeAsS

  3. MAJOR MINERAL SUITES Halides: Usually Soft, Often Soluble, Good Cleavage, Often Isometric • Halite NaCl • Fluorite CaF2 Sulfates: Soft, Light Color, Good Cleavage, Not Isometric • Gypsum CaSO4 • Barite BaSO4

  4. MAJOR MINERAL SUITES Oxides: Often Variable, Some Ores • Hematite Fe2O3 • Bauxite Al(OH) 3 (a hydroxide) • Corundum Al2O3 (Ruby, Sapphire) • Rutile (TiO2) • Spinel Group: Spinel, Magnetite, Chromite Carbonates: Fizz in Acid, Give off CO2 • Calcite CaCO3 • Dolomite CaMg(CO3)2

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