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Why does obsidian and igneous rock appear smooth and glassy
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Why does obsidian and igneous rock appear smooth and glassy
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Jul 2, 2019
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Why does obsidian and igneous rock appear smooth and glassy
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The answer is because its crystal cools quickly. Obsidian rock usually forms when cooling happens instantly.
Hope this helps!!
Lysette
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Jul 9, 2019
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