Four Stages of Coal Formation?


The four stages of coal formation are peat, lignite, bituminous and anthracite. Coal formation takes place underground. Coal that is high ranking has been under grater pressure and heat. Coal that is high ranking contains less moisture and is denser.
Q&A Related to "Four Stages of Coal Formation?"
The materials formed at each step of the process are. 1) Peat. 2) Lignite. 3) Sub-Bituminous and Bituminous Coal. 4) Anthracite (may also form from oil) The final stage, which most
There are four stages in coal formation: peat, lignite, bituminous and
1. peat 2. lignite 3. bitumen 4. athracite
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