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They are all derived mostly from plants.

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What are the four forms of coal in order?

Peat Lignite Bitumen Anthracite


What are the four stages of coal?

The four stages of coal formation are peat, lignite, bituminous, and anthracite. Peat is the earliest stage, and as coal matures through heat and pressure, it progresses into lignite, bituminous, and eventually anthracite, which is the highest grade of coal.


What are two differences between peat lignite bituminous coal and anthracite coal?

One difference is their carbon content: peat and lignite have lower carbon content compared to bituminous and anthracite coal. Another difference is their formation process: peat is not fully coal yet, as it is the earliest stage of coal formation, while anthracite coal is the highest grade and the result of further coalification processes.


What is the most valuable coal lignite bituminous peat anthracite?

Anthracite is the highest carbon coal, and therefore the most valuable.


What are the 4 stages of coal formation?

The four stages of coal formation are peat, lignite, bituminous, and anthracite. Peat is the first stage and is partially decomposed plant material. As the peat is buried and compressed, it transforms into lignite, then bituminous coal, and finally anthracite, which is the most carbon-rich and hardest form of coal.


Which list presents in correct order forms of coal from the first stage?

peat, lignite, bituminous, anthracite.


What are the varieties of coal formed inside the earth?

wood-peat-lignite-subbituminous-bituminous-anthracite The wood is converted to anthracite (coal) through various stages. lignite, subbituminous,bituminous,anthracite are the major coal types formed these are ranked based on the presence of carbon ,hydrogen and oxygen content


What can peat become if compressed long enough?

this is the order from peat to coal, peat-lignite-bituminous-anthracite- the higher up the the types, the higher BTU burn you well get, as well as a cleaner burn, but it takes more energy to get it started.


Which of these is not a stage of coal formation A lignite B hematite C anthracite D peat?

Hematite is not a stage of coal formation. It is actually a mineral that is a major source of iron ore. The stages of coal formation are peat, lignite, bituminous coal, and anthracite.


What are examples of coal?

Peat, Lignite and Anthracite.


Different kinds of coal?

The three main types of coal are anthracite, bituminous, and lignite. Anthracite is the highest rank of coal, known for its high carbon content and low moisture content. Bituminous is the most common type of coal, with a balance of carbon and volatile matter. Lignite is the lowest rank of coal, with high moisture content and low carbon content.


What is the first step in coal formation peat lignite bituminous coal or anthracite?

Plant growth layers onto itself but doesn't decompose quickly creating a peat bog. The peat builds up in the bog, layer by layer compressing into lignite (brown coal). This continues decomposing (anaerobically)and solidifying into semi bituminous (like asphalt), bituminous (soft), semi anthracite or anthracite (hard) coal, depending on pressure, moisture and mineral content of the process. The gasses of decomposition are largely lost in this natural process. Sometimes this process (due to the type of plant) will decompose into bitumen (tar) or oil deposits which, due to the covering material, traps the gasses of decomposition (natural gas) into pockets, which is why it is most often found when drilling for oil.