Assertion: anthracite's value | /r/HasProperty | high
Facets:
Source sentences:
text: The calorific value of the anthracite coal is high and on a moist, mineral matter free basis it is normally in the range of 6200 kcal/kg to 7900 kcal/kg depending on its carbon content and VM.
text: Anthracite is a type of fossil carbon characterized by a high calorific value and high combustion heat (the highest in relation to other raw materials).