MAJOR MINERAL SUITES Elements Metallic:Au, Ag, Cu

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Liz LaRosa 5th grade science 2010

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Presentation transcript:

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 FeS2 Chalcopyrite CuFeS2 Galena PbS Sphalerite ZnS2 Molybdenite MoS2 Sulfosalts: S + As, Se, etc. Arsenopyrite FeAsS

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

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