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Igneous Rocks Vocabulary
AB
granitemost common igneous rock; contains quartz, mica, feldspar
basaltformed from lava that cooled quickly (tiny crystals) also called "basement rock"
pumiceformed from lava that has gases escaping from it and cooling quickly (it has many holes and it floats!)
obsidiana volcanic glass that is formed when lava cools very quickly
Miss Geraci

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