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Coal Formation
About the 3 stages of coal formation
Peat | Lignite | Bituminous | Anthracite |
---|---|---|---|
Peat- | (blank) | (blank) | (blank) |
1st stage of coal formation. | 2nd stage of coal formation. | 3rd stage of coal formation. | 4th stage of coal formation. |
Light,brown piece of Earth. | (blank) | Black coal with some white spots. | Dark, black coal. |