stone coal
"Stone coal" primarily refers to hard varieties of coal, especially anthracite, and is used to distinguish these from charcoal.
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Definition
B2Energy
(general)A hard, compact type of coal used as a fuel source.
Example
- Stone coal is often used in industrial furnaces for its high heat output.
C1Geology
(technical)A sedimentary rock primarily composed of carbon, used for heating and energy production.
Example
- Geologists identified a rich deposit of stone coal in the region.
Similar
Terms that have similar or relatively close meanings to "stone coal":
small coalblack coalmineral coalcoal blackcoal titburn coalstone bubbleclean coalthrough stoneinfernal stoneliving rockcoal holecoal plantstone jugwitches' stonespecular stone