Is coke rock or mineral?

Coke is coal that has been processed by roasting it to drive off the gases and oils and leave the carbon untouched because the pure carbon burns at a higher temperature. read more

Coke is coal that has been processed by roasting it to drive off the gases and oils and leave the carbon untouched because the pure carbon burns at a higher temperature. Coking coal can get rid of some elements like sulphur that could contaminate steel if the coal was used for making steel. read more

Coal, a fossil fuel, is formed when plant matter becomes buried and compacted in an anoxic environment. read more