Coal: Anthracite, Bituminous, Coke, Pictures, Formation, Uses
The formation of a coal requires the coincidence of highly improbable events. Rank (From Lowest to Highest) Properties. Peat. A mass of recently accumulated to partially carbonized plant debris. Peat is an organic sediment. Burial, compaction, and coalification will transform it into coal, a rock. It has a carbon content of less than 60% on a ...