Metamorphic rock
Anthracite coal is already a metamorphic rock.
Anthracite coal has the highest percentage of carbon among the different types of coal.
The metamorphic rock anthracite is metamorphosed coal.
Coal is considered a sedimentary rock, except for Anthracite which is considered a metamorphic rock.
Anthracite is the hardest type of coal.
No. Anthracite coal is a metamorphic rock.
Anthracite coal is already a metamorphic rock.
Anthracite Coal is a metamorphic rock.
All types of coal are sedimentary, except anthracite which is metamorphic.
Anthracite is a type of coal.
Anthracite coal has the highest percentage of carbon among the different types of coal.
Anthracite coal would fit the description of a metamorphic rock that burned.
Coal. Anthracite is a very hard very clean burning metamorphic type of coal.
Peat (not much of a rock).
Anthracite is a form of coal. It is hard black and shiny.
Anthracite is a metamorphic rock commonly called coal ,whose protolith or parent rock is bituminous coal.
anthracite