RESOURCEs & Environment Ch. 2. Minerals & rocks
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Transcript of RESOURCEs & Environment Ch. 2. Minerals & rocks
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RESOURCES & ENVIRONMENTCH. 2. MINERALS & ROCKS
Granite of Inwang Mountainhttp://kr.blog.yahoo.com/jjagida/1176844
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2-1. MINERALS2-1-1. How does the mineral form?
Definition of Minerals• Abiogenic• Naturally occurring• Fixed (or given) chemical formula• Ordered structure (atomic arrangement)• Solid
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Mineral Formation
• Crystallization from melts (magma)• Metamorphic crystallization• Precipitation from water (or water
vapour)• Biogenic productions• Other chemical reactions
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2-1-2. Mineral Classes
• Silicates: SiO4 tetrahedron + other cations & anions (Ortho-clase, pyroxenes, amphiboles)
• Nonsilicates
• Oxides: Fe2O3 (hematite)• Hydroxides: Gibbsite (Al(OH)3)• Sulfates: Gypsum (CaSO4.2H2O)• Carbonates: Calcite (CaCO3)• Phosphates: Apatite (Ca5(PO4)3(F,Cl,OH))• Halides: Halite (NaCl)• Sulfides: Pyrite (FeS2)• Natural Elements: Gold (Au)• etc
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Orthoclase. Minas Gerais, Southeast Region, Brazil http://en.wikipedia.org/wiki/File:OrthoclaseBresil.jpg
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Diopside. Bellecombe, Châtillon, Aosta Valley, Italyhttp://en.wikipedia.org/wiki/File:Diopside_Aoste.jpg
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Tremolite. Campolungo, Piumogna Valley, Leventina, Ticino (Tessin), Switzerland http://en.wikipedia.org/wiki/File:Tremolite_Campolungo.jpg
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Hematite. Michigan, USAhttp://en.wikipedia.org/wiki/File:Hematite.jpg
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Gibbsite. Brazilhttp://en.wikipedia.org/wiki/File:Gibbsite
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Gypsum. http://en.wikipedia.org/wiki/Gypsum
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Calcite. National Museum of Natural History in Washington, DChttp://en.wikipedia.org/wiki/File:Calcite-HUGE.jpg
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Apatite. Quebec, Canadahttp://en.wikipedia.org/wiki/File:Apatite_crystals.jpg
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Halite. Wieliczka Salt Mine, UNESCO World Heritage Site, Wieliczka, Małopolskie, Polandhttp://en.wikipedia.org/wiki/File:Selpologne.jpg
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Pyrite. Navajún, Rioja, Spainhttp://en.wikipedia.org/wiki/File:2780M-pyrite1.jpg
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Gold. Navajún, Synthetichttp://en.wikipedia.org/wiki/Gold
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2-1-3. Mineral Usages