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Geography, 05.10.2019 02:30 Blahdjwj7073
51. volcanic glass (obsidian) is a coarsely crystalline b. noncrystalline; like window glass; typically results from very rapid cooling of a silica rich lava flow c. produced by slow cooling of a lava flow d. produced by escaping gases in a magma
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51. volcanic glass (obsidian) is a coarsely crystalline b. noncrystalline; like window glass; typi...
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