what are the types of coal
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Anthracite: The highest rank of coal. ...
Bituminous: Bituminous coal is a middle rank coal between subbituminous and anthracite. ...
Subbituminous: Subbituminous coal is black in color and is mainly dull (not shiny). ...
Lignite: Lignite coal, aka brown coal, is the lowest grade coal with the least concentration of carbon.
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Explanation:
Coal is classified into four main types, or ranks: anthracite, bituminous, subbituminous, and lignite. The ranking depends on the types and amounts of carbon the coal contains and on the amount of heat energy the coal can produce.
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