red rhyolite extrusive igneous rock isolated white background |
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navigate by keyword : associated background black carbon coal crystal eruptions extrusive formed fossil fuel geology granite granitic igneous isolated macro magma material mica mine mineral mining natural nature object obsidian ore piece pumice red rhyolite rock rough stone tuff types white |
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Rhyolite is an extrusive igneous rock formed during eruptions of granitic magma. Pumice, obsidian, and tuff are associated rock types. |
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