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What are two extrusive rocks
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What are two extrusive rocks
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Jan 17, 2017
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What are two extrusive rocks
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middle-school
Alexander Wallin
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Alexander Wallin
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Extrusive igneous rocks form when magma reaches the Earth's surface a volcano and cools quickly. Most extrusive (volcanic) rocks have small crystals. Examples include
basalt, rhyolite, andesite,
and
obsidian.
PriestVallon
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Jan 24, 2017
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