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It is a sedimentary rock, but the harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. It is composed primarily of carbon along with assorted other elements, including sulfur.
Coal is not a rock, but rather a combustible black or brownish-black sedimentary rock that is primarily composed of carbon, along with traces of other elements like sulfur, hydrogen, oxygen, and nitrogen. It is formed from the remains of plants that lived and died millions of years ago, and undergoes a process known as coalification to become the coal we use today for energy production.
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How does coal go through the rock-cycle?
Coal forms from the remains of plants that have been buried in Earth's crust for millions of years. Over time, heat and pressure from the layers of rock above it compress the plant material, forming coal. This process of transformation from plant material to coal is part of the rock cycle, as coal is a type of sedimentary rock.
What type of rock is coal?
Coal is not a rock; it is a black or brown sedimentary rock that forms from partially decayed plant matter. It is classified as an organic sedimentary rock rather than an igneous or metamorphic rock.
Is the origin of diamonds rock or coal?
The origin of diamonds is rock, specifically kimberlite and lamproite volcanic rocks that form deep within the Earth's mantle. Coal is a completely different type of sedimentary rock formed from plant material.
What rock group does coal belong to?
Coal is not classified as a rock group. It is a sedimentary rock formed from the remains of dead plants over millions of years.
How does coal burn if it is a rock?
Coal is not just any rock - it is a combustible sedimentary rock made mainly of carbon. When coal is heated, the organic compounds within it break down and release energy in the form of heat, which causes the coal to burn. The carbon in coal reacts with oxygen in the air to produce heat, carbon dioxide, and other byproducts.
What kind of coal is sedimentary rock?
Coal, other than the metamorphic form called anthracite, is an organic sedimentary rock.
What kind of rock do you consider coal?
lick my hair
What kind of sedimentary rock can be used to make energy?
Coal.
A grade 5 way to describe coal?
Coal is a hard end sedimentary rock that is brown and kind of black.
Chalk and coal are examples of a kind of sedimentary rock called?
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.
What kind of rock is a sedimentary rock?
It is Limestone Gypsum Coal Dolomite Halite Sandstone Conglomerate Shale
What kind of rock is an organic rock?
Anthracite could be considered an organic metamorphic rock as its protolith is bituminous coal, an organic sedimentary rock.
Is lignite a igneous rock?
No, lignite is not an igneous rock. Lignite is a type of coal formed from compressed peat. Igneous rocks are formed through the solidification of molten magma or lava.
What is the source of energy in coal?
coal is found from charcoal..........a special kind of rock found about 4 feet below earths surface
Is anthracite coal a sedimentary rock?
Yes, anthracite coal is a type of coal that is considered a metamorphic rock, not a sedimentary rock. It forms from the metamorphism of bituminous coal at high pressures and temperatures.
Is coal related to rock?
Coal is a form of rock. It is an organically formed sedimentary rock.
What is the parent rock for anthracite coal?
Peat (not much of a rock).
