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MAJOR MINERAL SUITES

This document provides an in-depth examination of major mineral suites categorized by their properties and compositions. It covers metallic elements such as gold, silver, and copper, alongside non-metallic elements like diamond and graphite. The various major mineral suites include sulfides (e.g., pyrite, galena), halides (e.g., halite, fluorite), sulfates (e.g., gypsum, barite), oxides (e.g., hematite, corundum), and carbonates (e.g., calcite, dolomite). Each suite is characterized by its mineralogical features, occurrences, and significance in geological studies.

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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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