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The top documents tagged [obsidian volcanic glass]
Rock Types
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Rocks
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Mineralogy – The Study of Minerals Chapter 3 What is a mineral? What are the properties of minerals? What are minerals composed of? How do we know the
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The Rock Cycle a brief introduction to the most important rock types
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The Empires in America before Columbus arrives. Aztecs & Incas
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Art & Architecture: Pyramids are similar to the Egyptians pyramids because both demonstrate the ability of the society to organize a large labor force
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Mineralogy – The Study of Minerals Chapter 3
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Igneous Rocks
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