It isn't. Coal is the compressed remains of plants which lived in swamps and was later covered with sediment and buried under millions of tons of rock for millions of years until it became almost as hard as rock.
Coal is a form of rock. It is an organically formed sedimentary rock.
Coal is an organic sedimentary rock, formed from the sedimentary processes of compaction and cementation.
Coal is a type of organic sedimentary rock formed from dead plants.
Bituminous coal is an organic sedimentary rock formed from the partially decayed remains of plants. Anthracite coal is considered metamorphic rock, and is derived from a bituminous coal protolith. Coal.
The rock is......Coal
Organic sedimentary rocks are formed from the accumulation of once living things. Coal is an example of a sedimentary rock.
coal is a sedimentary rock very high in carbonaceous content.
coal
Coal is a type of sedimentary rock known as a combustible sedimentary rock. It is formed from the remains of plants that have been compacted and altered over millions of years under heat and pressure.
Most coal is classified as an organic sedimentary rock. The exception would be anthracite, which is metamorphosed bituminous coal.
Coal is an organic sedimentary rock formed from plant materials, used primarily to generate electricity through combustion.
Anthracite coal is considered metamorphic. All other types are sedimentary.