Coal, other than the metamorphic form called anthracite, is an organic sedimentary rock.
Chalk and coal are examples of a kind of sedimentary rock called biochemical sedimentary rock. Biochemical sedimentary rocks form from the accumulation and lithification of organic remains, such as shells and plant material.
Coal.
Coal is a sedimentary rock. However, harder forms of coal, because of exposure to elevated temperature and pressure, are metamorphic rock.
It is Limestone Gypsum Coal Dolomite Halite Sandstone Conglomerate Shale
Coal is a hard end sedimentary rock that is brown and kind of black.
Coal is a sedimentary rock.
Coal is a type of organic sedimentary rock formed from dead plants.
Coal is classified as a sedimentary rock.
No. Anthracite coal is a metamorphic rock.
Bituminous coal is consided a sedimentary rock. Anthracite coal is bituminous coal that has been metamorphosed by great pressure and heat and is considered a metamorphic rock.
Coal is a sedimentary rock. However, harder forms of coal, because of exposure to elevated temperature and pressure, are metamorphic rock.
Anthracite could be considered an organic metamorphic rock as its protolith is bituminous coal, an organic sedimentary rock.