Question

anthracite is a type of very pure coal which has the highest concentration of carbon. use the image above to determine what type of rock anthracite is based on the processes each type of rock (igneous, metamorphic and sedimentary) are created.

Explanation:

Anthracite is formed from other types of coal through high - pressure and high - temperature processes, which are characteristic of metamorphic processes. Igneous rocks form from the cooling and solidification of magma or lava, which is not related to the formation of anthracite.

Answer:

metamorphic