W10_103_1c_minerals

W10_103_1c_minerals - Minerals The Geologic Alphabet...

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Minerals The Geologic Alphabet Definition of a Mineral • Natural • Solid • Inorganic • Crystalline Structure • Chemical Compound Source: E. R. Degginger/Bruce Coleman Inc.
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Mineral Formation Primary 1. Crystallize out of a magma 2. Crystallize out of water Secondary 3. Chemical Weathering 4. Metamorphism Form Igneous Rocks Form Metamorphic Rocks Form Sedimentary Rocks Identifying Minerals A mineral’s chemical composition and crystal structure give it a unique combination of chemical and physical properties we can use to identify it.
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Physical Properties of Minerals A. Mineral Shape Crystal Form Source: Jeffrey Scovil Source: Jeffrey Scovil
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Fracture Conchoidal (“shell-like”) Mineral Cleavage 3 planes; angle 90° Source: Ed Degginger/Bruce Coleman Inc. Halite 1 2 3
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Mineral Cleavage 1 plane; angle N/A Source: Breck P. Kent 1 Muscovite Mineral Cleavage 4 planes; not 90° Fluorite 1 2 3 4
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B. Mineral Appearance Color
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This note was uploaded on 01/11/2012 for the course GEO 103 taught by Professor Robviens during the Winter '10 term at Bellevue College.

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W10_103_1c_minerals - Minerals The Geologic Alphabet...

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