Coal
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| '''Coal''' is a [[combustion|combustible]] black or brownish-black [[sedimentary rock]] usually occurring in [[stratum|rock strata]] in ''layers or veins'' called '''coal beds<!-- redirected term title-->''' or '''coal seams'''. The harder forms, such as [[anthracite|anthracite coal]], can be regarded as [[metamorphic rock]] because of later exposure to elevated temperature and [[pressure]]. Coal is composed primarily of [[carbon]] along with variable quantities of other elements, chiefly [[hydrogen]], [[sulfur]], [[oxygen]], and [[nitrogen]]. | '''Coal''' is a [[combustion|combustible]] black or brownish-black [[sedimentary rock]] usually occurring in [[stratum|rock strata]] in ''layers or veins'' called '''coal beds<!-- redirected term title-->''' or '''coal seams'''. The harder forms, such as [[anthracite|anthracite coal]], can be regarded as [[metamorphic rock]] because of later exposure to elevated temperature and [[pressure]]. Coal is composed primarily of [[carbon]] along with variable quantities of other elements, chiefly [[hydrogen]], [[sulfur]], [[oxygen]], and [[nitrogen]]. | ||
| + | ==See also== | ||
| + | * [[Abiogenic petroleum origin]] | ||
| + | * [[Asphaltene]] | ||
| + | * [[Biochar]] | ||
| + | * [[Biobased economy|Biomass-coal]] | ||
| + | * [[Carbochemistry]] | ||
| + | * [[Coal pollution mitigation]] | ||
| + | * [[Coal assay]] | ||
| + | * [[Coal blending]] | ||
| + | * [[Coal homogenization]] | ||
| + | * [[Coal measures]] (stratigraphic unit) | ||
| + | * [[Coal phase out]] | ||
| + | * [[Coal-tar]] | ||
| + | * [[Coalbed methane]] | ||
| + | * [[Environmental issues with coal]] | ||
| + | * [[Fluidized bed combustion]] | ||
| + | * [[Fossil fuel]] | ||
| + | * [[Fossil fuel phase-out]] | ||
| + | * [[Gyttja|Gytta]] | ||
| + | * [[Major coal producing regions]] | ||
| + | * [[Mountaintop removal mining]] | ||
| + | * [[Petroleum]] | ||
| + | * [[The Coal Question]] | ||
| + | * [[Tonstein]] | ||
| + | * [[World Coal Association]] | ||
| {{GFDL}} | {{GFDL}} | ||
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Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon along with variable quantities of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.
See also
- Abiogenic petroleum origin
- Asphaltene
- Biochar
- Biomass-coal
- Carbochemistry
- Coal pollution mitigation
- Coal assay
- Coal blending
- Coal homogenization
- Coal measures (stratigraphic unit)
- Coal phase out
- Coal-tar
- Coalbed methane
- Environmental issues with coal
- Fluidized bed combustion
- Fossil fuel
- Fossil fuel phase-out
- Gytta
- Major coal producing regions
- Mountaintop removal mining
- Petroleum
- The Coal Question
- Tonstein
- World Coal Association
Unless indicated otherwise, the text in this article is either based on Wikipedia article "Coal" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on research by Jahsonic and friends. See Art and Popular Culture's copyright notice.
