- ncoal having 25 weight % or more, but less than 50 weight %, of ash on the dry basis.DISCUSSION — Bone coal with more than 50 weight % ash is properly called coaly or carbonaceous shale or siltstone. Types of impure coal other than bone coal and mineralized coal sometimes occur, for example, sandy coal.
ASTM D121-09a Standard Terminology of Coal and Coke. 2014.
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coal — n a brown to black combustible sedimentary rock (in the geological sense) composed principally of consolidated and chemically altered plant remains. DISCUSSION Conditions required for formation of coal are believed to include accumulation of… … Coke&Coal Terminology
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coal-tar creosote — impure phenol or carbolic acid, distinct from the creosote of wood tar. * * * … Universalium
coal-tar creosote — noun a dark oily liquid obtained by distillation of coal tar; used as a preservative for wood • Syn: ↑creosote • Derivationally related forms: ↑creosote (for: ↑creosote) • Hypernyms: ↑organic compound … Useful english dictionary
coal-tar creosote — /ˌkoʊl ta ˈkriəsoʊt/ (say .kohl tah kreeuhsoht) noun impure phenol, distinct from the creosote of wood tar … Australian English dictionary
mineralized coal — n impure coal that is heavily impregnated with mineral matter, either dispersed or discretely localized along cleat joints or other fissures. Pyritic or calcareous mineralized coal is most common … Coke&Coal Terminology
bone coal — n impure coal that contains much clay or other fine grained detrital mineral matter … Coke&Coal Terminology
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