Bituminous coal

black coalbituminouscoalcoking coalhard coalPocahontas coal39.85bituminous (black) coalbituminous coal minesbituminous soft coal
Bituminous coal or black coal is a relatively soft coal containing a tarlike substance called bitumen or asphalt.wikipedia
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Lignite

brown coallignite coallignitic
It is of higher quality than lignite coal but of poorer quality than anthracite.
Lignite is brownish-black in color and has a carbon content around 60–70 percent, a high inherent moisture content sometimes as high as 75 percent, and an ash content ranging from 6–19 percent compared with 6–12 percent for bituminous coal.

Coal

coal seamcoal industrycoal-fired
Bituminous coal or black coal is a relatively soft coal containing a tarlike substance called bitumen or asphalt.
Thus first lignite (also called "brown coal"), then sub-bituminous coal, bituminous coal, and lastly anthracite (also called "hard coal" or "black coal") may be formed.

Anthracite

anthracite coalculmhard coal
It is of higher quality than lignite coal but of poorer quality than anthracite.
Anthracite differs from ordinary bituminous coal by its greater hardness (2.75–3 on the Mohs scale), its higher relative density of 1.3–1.4, and luster, which is often semi-metallic with a mildly brown reflection.

Coal mining

coal minecollierycoal miner
Within the coal mining industry, this type of coal is known for releasing the largest amounts of firedamp, a dangerous mixture of gases that can cause underground explosions.
Most open cast mines in the United States extract bituminous coal.

Firedamp

fire dampfire-dampmine gas
Within the coal mining industry, this type of coal is known for releasing the largest amounts of firedamp, a dangerous mixture of gases that can cause underground explosions.
It is particularly found in areas where the coal is bituminous.

Coke (fuel)

cokecoking coalcoke oven
Coking coal is best if it has a very narrow range of volatility and plasticity.
The unqualified term "coke" usually refers to the product derived from low-ash and low-sulfur bituminous coal by a process called coking.

Cannel coal

cannelAmpelitecannel coal veins
Cannel coal is a coal which ignites easily producing a bright flame.
Cannel coal or candle coal is a type of bituminous coal, also classified as terrestrial type oil shale.

Forge

smithysmithiesforging
Smithing coal is a type of high-quality bituminous coal ideally suited for use in a coal forge.
A forge typically uses bituminous coal, industrial coke or charcoal as the fuel to heat metal.

Coal assay

ashcarbonizationCoal analysis
This is measured by the free swelling index test.
Coal comes in four main types or ranks: lignite or brown coal, bituminous coal or black coal, anthracite and graphite.

Fly ash

coal ashpulverised fuel ashash
It is as free from ash, sulfur, and other impurities as possible.
The chemical properties of the fly ash are largely influenced by the chemical content of the coal burned (i.e., anthracite, bituminous, and lignite).

West Virginia

WVwestern VirginiaState of West Virginia
It contains a high volatile content, is non-coking and was a source for coal oil in West Virginia during the mid-1800s.
The West Virginia official state rock is bituminous coal, and the official state gemstone is silicified Mississippian fossil Lithostrotionella coral.

Maceral

maceralscoal macerals
Its primary constituents are macerals: vitrinite, and liptinite.
This gives information on the carbon, hydrogen and nitrogen composition of the coal, and determines the type of coal: lignite, brown coal, bituminous coal, anthracite or graphite.

Diagenesis

diageneticdiageneticallylithified
Bituminous coal is an organic sedimentary rock formed by diagenetic and sub metamorphic compression of peat bog material.
During mesodiagenesis, dehydration of clay minerals occurs, the main development of oil genesis occurs and high to low volatile bituminous coals are formed.

Asphalt

bitumenbituminoustarmac
Bituminous coal or black coal is a relatively soft coal containing a tarlike substance called bitumen or asphalt.

Metallurgical coal

coking coalcokingcoking-grade coal
Coking coal (metallurgical coal) is used in the manufacture of steel, where carbon must be as volatile-free and ash-free as possible.
Metallurgical coal is low in ash, moisture, sulfur and phosphorus content, and is usually of Bituminous rank.

Bowen Basin

BowenBasinFairview, Scotia, Spring Gully, Bowen Basin
Australian deposits in the Bowen Basin in Queensland, the Sydney Basin and Perth Basin are Permian coal, where thicknesses in excess of 300 m are known.
This major coal-producing region contains one of the world's largest deposits of bituminous coal.

The Big Vein

Big Vein
The Big Vein refers to a 14 ft thick seam of bituminous coal discovered in the Georges Creek Valley of Western Maryland in the early 19th century.

Georges Creek Valley

George's Creek ValleyGeorges Creek Basin
Some of the richest beds of soft, bituminous coal in the country lay within the hills and mountains of this region.

Norfolk and Western Railway

Norfolk and WesternNorfolk and Western RailroadNorfolk & Western
Pocahontas bituminous coal at one time fueled half the world's navies and today stokes steel mills and power plants all over the globe.
Kimball, who had a strong interest in geology, led the railroad's efforts to open the Pocahontas coalfields in western Virginia and southern West Virginia.

Mist Mountain Formation

They range in age from latest Jurassic or earliest Cretaceous in the Mist Mountain Formation, to Late Cretaceous in the Gates Formation.
Mist Mountain coal generally has a low sulphur content and coal rank typically ranges from high- to medium-volatile bituminous in the south, and from low-volatile bituminous to semi-anthracite in the north.

Appalachian Mountains

AppalachiansAppalachianAppalachian Mountain
Much North American coal was created in subsiding areas adjacent to the Appalachian Mountains during the Pennsylvanian subperiod.
The Appalachian Mountains contain major deposits of anthracite coal as well as bituminous coal.

Surat Basin

Surat
Extensive but low-value coals of Jurassic age extend through the Surat Basin in Australia, formed in an intracratonic sag basin, and contain evidence of dinosaur activity in the numerous ash plies.

Appalachia

mountain peopleAppalachianAppalachian region
Bituminous coal is mined in the Appalachian region, primarily for power generation.
Most of the coal mined is bituminous, although significant anthracite deposits exist on the fringe of the region in central Pennsylvania.

Greenhouse gas

greenhouse gasescarbon emissionsgreenhouse gas emissions

Tar

wood tartar kilnTars
Bituminous coal or black coal is a relatively soft coal containing a tarlike substance called bitumen or asphalt.