coal fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period
= synonym
= antonym
= relatert ord
Wiktionary
Substantiv
anthracite -
A form of carbonized ancient plants; the hardest and cleanest-burning of all the coals; hard coal.
Wikipedia
Anthracite (Greek aνθρακίτης, "coal-like," from άνθραξ, coal) is a hard, compact variety of mineral coal that has a high luster. It has the highest carbon count and contains the fewest impurities of all coals, despite its lower calorific content. Anthracite is the most metamorphosed type of coal (but still represents low-grade metamorphism), in which the carbon content is between 92.1% and 98%.
OmegaWiki Dictionary
Ω
anthracite A natural black graphitelike material used as a fuel, formed from fossilized plants and consisting of more than 90% amorphous carbon with various organic and some inorganic compounds.
