- Types:
- show 6 types...
- hide 6 types...
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peat
partially carbonized vegetable matter saturated with water; can be used as a fuel when dried
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coal
fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period
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anthracite, anthracite coal, hard coal
a hard natural coal that burns slowly and gives intense heat
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bituminous coal, soft coal
rich in tarry hydrocarbons; burns readily with a smoky yellow flame
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brown coal, lignite, wood coal
intermediate between peat and bituminous coal
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steam coal
coal suitable for use under steam boilers
