chapter 3 section 2 how minerals form -how do minerals form from magma and lava? -how do minerals...
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Chapter 3 section 2 How Minerals Form
-How do minerals form from magma and lava?
-How do minerals form from water solutions?
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• geode: rounded hollow rock that is lined with crystals
•Crystallization: the process by which atoms are arranged to form a material with crystal structure.
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A. Minerals from Magma and Lava
1. Minerals form as hot magma cools inside Earth, or as lava hardens on the surface.
2. When liquids cool to a solid state, they form crystals.
3. The size of the crystal depends on the rate at which magma cools.
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B. Minerals From Solutions
1. When elements or compunds that are dissolved in water leave a solution, crystallization occurs.
2. They form underground and in bodies of water on Earth’s surface.
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3. Minerals Form by Evaporation
-minerals form when solutions evaporate
-example: salt crystals
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4. Minerals From Hot Water Solutions
-Minerals can form beneath the surface when dissolvedelements and compounds leave a hot water solution orwhen magma cools and hardens.
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