11/9/2016 1 SILICATE VS. NON - SILICATE CLASSIFICATION OF MINERALS ALL MINERALS ON EARTH FALL INTO ONE OF THESE CLASSIFICATIONS TWO MAIN DIVISIONS OF MINERALS (SILICATE AND NON - SILICATE) SILICATES (95 % OF EARTH’S CRUST) • • Silicate Types: • • Feldspar • Orthoclase Feldspar (KAlSi 3 O 8 ) • Plagioclase Feldspar (NaAlSi 3 O 8 CaAl 2 Si 2 O 8 ) • • Hornblende (Ca 2 Fe 5 Si 8 O 22 F 2 ) • Olivine Fe 2 SiO4 • Muscovite (KAl 2 (AlSi 3 O 10 )F 2 ) • Biotite (KMg 3 AlSi 3 O 10 (OH) 2 ) NON-SILICATES (5% OF EARTH’S CRUST) • DO NOT CONTAIN SILICON!!! • Carbonates – contain carbonate (CO 3 ) • Calcite (CaCO 3 ) • Dolomite (CaMg(CO 3 ) 2 ) • • Gypsum (CaSO 4 ) • Halides – contain (Cl, F with Na, K, Ca) • Halite (NaCl) • Fluorite (CaF 2 ) • Oxides – contain oxygen (O) and NOT silicon (Si) • Hematite (Fe 2 O 3 ) • Magnetite (Fe 3 O 4 ) • Native Elements – uncombined with other elements • Silver (Ag) • Copper (Cu) • • Galena (PbS) • Pyrite (FeS 2 )
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11/9/2016
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SILICATE VS. NON-SILICATECLASSIFICATION OF MINERALS
ALL MINERALS ON EARTH FALL INTO ONE OF THESE CLASSIFICATIONS
TWO MAIN DIVISIONS OF MINERALS(SILICATE AND NON-SILICATE)
SILICATES (95 % OF EARTH’S CRUST)
• Contain silicon (Si) and oxygen (O)
• Silicate Types:
• Quartz (SiO2)
• Feldspar
• Orthoclase Feldspar (KAlSi3O8)
• Plagioclase Feldspar (NaAlSi3O8 CaAl2Si2O8)
• Ferromagnesian Minerals
• Hornblende (Ca2Fe5Si8O22F2)
• Olivine Fe2SiO4
• Muscovite (KAl2(AlSi3O10)F2)
• Biotite (KMg3AlSi3O10(OH)2)
NON-SILICATES (5% OF EARTH’S CRUST)
• DO NOT CONTAIN SILICON!!!• Carbonates – contain carbonate (CO3)