Anthracite coal is already a metamorphic rock.
Bituminous coal is changed by heat and pressure into the metamorphic rock anthracite.
maybe
Metamorphic rock
coal can turn into steam water. that's the only thing that coal can turn into.
Diamond does not turn into coal when exposed to flame.
Bituminous coal is changed by heat and pressure into the metamorphic rock anthracite.
maybe
Weathering and erosion turn igneous rock to metamorphic rock.
All coal is metamorphic and sedimentary rock. When coal forms it is made out of ancient organic material, and over a long period of time the coal is buried under sediments and water. (That part makes it sedimentary) Over time in order to make the coal we know today heat and pressure (That is what makes it metamorphic) makes the organic material turn hard and solid to become coal.
The rock that gets heat+pressure to turn into a metamorphic rock.
Extreme heat and pressure, like that of coal turning to diamonds. Metamorphic rocks, in turn, are then broken down or turned into molten rock, so new sedimentary, igneous, or metamorphic rocks can form.
A metamorphic or Igneous rock
metamorphic rock.....
metamorphic
Metamorphic rock
no it can't
Melting.