Quick Answer: Is coal a foliated metamorphic rock?

Is coal a metamorphic rock?

Because coal undergoes physical and chemical changes as a result of increased heat, there is sometimes a misconception that coal is a metamorphic rock. Coal is a sedimentary rock.

Is coal non-foliated or foliated?

Anthracite Coal. Anthracite is a non-foliated rock produced by the metamorphism of bituminous coal.

What minerals are in anthracite coal?


Names: anthracite, semi-anthracite coal, bituminous coal
Chemical composition: carbon − 77%, ash − 6-16%
Trace elements: sulfur − 0.23-1.2%, silica oxide − 2.2-5.4%, alumina − 2%, ferric oxide − 0.4%
Density, g/cm3: 1.3-1.8 Mohs hardness: 2.2-3.8

What are 5 examples of metamorphic rocks?

Common metamorphic rocks include phyllite, schist, gneiss, quartzite and marble.

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