Minerals_lecture1c - Instruction View full-screen images in...

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Instruction: View full-screen images in the Slide Show mode of display. Read the explanatory notes in the Normal View mode of display.
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Minerals READ Chap. 3. Next lecture, finish the chapter. What is a mineral? Probing crystals with x-rays; the unit cell Crystal vs . glass ionic bonds Chemistry of the earth’s crust Chemical bonds covalent bonds
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Millerite (NiS)
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Wulfenite (PbMoO 4 )
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Galena (PbS) and calcite (CaCO 3 )
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Calcite daggers
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Minerals What is a mineral? Probing crystals with x-rays; the unit cell Crystal vs . glass ionic bonds Chemistry of the earth’s crust Chemical bonds covalent bonds
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Definition of a mineral • naturally-occurring
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Definition of a mineral • naturally-occurring • inorganic
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Galena (PbS) and calcite (CaCO 3 )
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Definition of a mineral • naturally-occurring • inorganic • fixed chemical composition, or a com- position that varies between fixed limits
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Definition of a mineral • naturally-occurring • inorganic • fixed chemical composition, or a com- position that varies between fixed limits • atoms positioned in a regular, repeating, three-dimensional pattern
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Interfacial Angles of Quartz
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Constant Interfacial Angles
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