Is coal a metamorphic rock

Answer 1

Coal when subject to mild metamorphism turns into Anthracite, in which the carbon content is between 92% and 98%. If squeezed and heated still further, the coal will transform into graphite and of cause if the taken to extremes diamond will be produced, but that would require the coal to be taken deep into the earth's mantle.

Answer 2

Bituminous coal is a sedimentary rock. Anthracite coal is considered a metamorphic rock.

Answer 3

Bituminous coal is a sedimentary rock. Anthracite is a metamorphosed bituminous coal, and is therefore considered a metamorphic rock.

Answer 4

this is because it is a mineral

Answer 5

Anthracite