https://wikiciv.org/api.php?action=feedcontributions&feedformat=atom&user=ChicklerWikiciv - User contributions [en]2026-11-01T21:57:33ZUser contributionsMediaWiki 1.46.2https://wikiciv.org/index.php?title=Coal&diff=3281Coal2025-05-06T04:50:35Z<p>Chickler: Capitalization of Mohs.</p>
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<div>{{distinguish|Charcoal}}<br />
[[File:Coal Transported to the nearby Meremere Power Station, 1966.jpg|thumb|250px|Maramarua Open Cast Coal Mine in New Zealand, 1966]]<br />
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'''Coal''' is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly [[carbon]] with variable amounts of other elements, chiefly [[hydrogen]], [[sulfur]], [[oxygen]], and [[nitrogen]]. Coal is formed when dead plant matter decays into [[peat]] and is converted into coal by the heat and pressure of deep burial over millions of years. Coal is primarily used as a [[fuel]]. Coal is very soft ranking from 2 to 4 on the Mohs hardness scale, while sandstone ranks from 5 to 7.<br />
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== Dependencies ==<br />
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* [[Carbon]]<br />
* [[Peat]]<br />
** '''Coal'''<br />
** [[Fuel]]<br />
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== See also ==<br />
* [[Raw material]]<br />
* [[Activated charcoal]]<br />
* [[Carbon dioxide]]<br />
*[[Charcoal]]<br />
*[[Fire]]<br />
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== References ==<br />
{{wa|Coal}}<br />
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[[Category:Fuel]]<br />
[[Category:Hydrocarbons]]<br />
[[Category:Stubs]]</div>Chickler