They are all derived mostly from plants.
Well, peat is the kind that comes out of dark unicorns.
The layers of coal are called peat, lignite, subbituminous, bituminous caol, and anthracite. Peat being the most inexpensive and anthracite being the most valuable. Most coal in use is bituminous. Another answer: A layer of coal in a mine is called a coal seam.
Peat- 50-60%Lignite- 60-70%Bituminous- 70-90%Anthracite -over 90%
ANTHRACITE bitumminous coal LIGNITE PEAT
Peat Lignite Bitumen Anthracite
Anthracite is the highest carbon coal, and therefore the most valuable.
Well, peat is the kind that comes out of dark unicorns.
peat, lignite, bituminous, anthracite.
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
The layers of coal are called peat, lignite, subbituminous, bituminous caol, and anthracite. Peat being the most inexpensive and anthracite being the most valuable. Most coal in use is bituminous. Another answer: A layer of coal in a mine is called a coal seam.
Peat, Lignite and Anthracite.
Peat- 50-60%Lignite- 60-70%Bituminous- 70-90%Anthracite -over 90%
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.
Peat Lignite Bitumen Anthracite
ANTHRACITE bitumminous coal LIGNITE PEAT
coal is created by the deposition and compaction of huge plant(organic) material deposited into a basin,with the increasing depth the high rank of coal is formed. The order is:- peat>lignite>bituminous>anthracite Peat is formed at shallow depth and on moving downward anthracite is formed at greater depth.
The materials formed at each step of the process are 1) Peat 2) Lignite 3) Sub-Bituminous and Bituminous Coal 4) Anthracite (may also form from oil) The final stage, which most coal does not reach, is graphite or pure carbon.