Coal
Of fossil fuel and vegetable matter.
Fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period.
This concept's ID is @1~74889
Contains
- carbon
An abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous...
- bituminous coal
Rich in tarry hydrocarbons; burns readily with a smoky yellow flame.
- wood coal
Intermediate between peat and bituminous coal.
- anthracite
A hard natural coal that burns slowly and gives intense heat.
- steam coal
Coal suitable for use under steam boilers.