Calcite

Calcite frequently appears as a component in sedimentary rocks, especially in limestone, a substantial portion of which originates from the remnants of deceased marine organisms. Limestone constitutes approximately 10% of sedimentary rock, highlighting calcite's prevalence.

This mineral assumes a primary role in the composition of metamorphic marble. Additionally, calcite can be found in deposits from hot springs, where it manifests as a vein mineral. In cavernous environments, it forms stalactites and stalagmites. Furthermore, calcite is present in volcanic or mantle-derived rocks like carbonatites, kimberlites, and, more rarely, in peridotites.