Marble is a metamorphic rock.
Most of marble forms at Earth’s convergent plate boundaries where Earth’s crust is exposed to metamorphism (process in which sediments will pile over top each other on either sedimentary or igneous rock. The rocks will be exposed to extreme During metamorphism, marble can be exposed to hot magma body that will recrystallize the calcite (CaCO3) and its texture will change over time. Minerals in marble can also change. During this process, marble will eventually change to limestone because calcite contains other minerals such as micas, quartz, pyrite, iron oxides, and graphite.
