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Unformatted text preview: Feldspar: network silicate, 2 types: orthoclase (pink K feldspar) plagioclase (Ca-Na felspar) Quartz silicate as well, all tetrahedra (SiO 2 ), no cleavage, hardness of 7 due to the only covalent bonding which is very strong (2) Non-Silicates Carbonates: metals bonded to (CO3) group calcite (CaCO3) dolomite (CaMg(CO3)2 (3) Minerals formed by Evaporation halite: NaCl, common salt, also used for chlorine and baking soda gypsum: CaSO4+2H2O (4) Ores of Metals: Hematite: Fe2O3 (iron ore) Sphalerite: ZnS (zinc ore) Galena: PbS (lead ore) Native minerals: Gold (Au), Silver (Ag) September 18, 09 1...
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- Spring '10