Geology

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Coal

Pictures of Sedimentary Rocks

From Andrew Alden, About.com

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Coal is fossilized peat, dead plant material that once piled deep on the bottom of ancient swamps. Learn more about coal in Coal in a Nutshell and Coal Geology.

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From Utah minesPhoto (c) 2007 Andrew Alden licensed to About.com

Geology

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  5. Sedimentary Rock Types - Coal Picture

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