Limestone

Sedimentary rock composed primarily of calcium carbonate.

calcium carbonate rock

Limestone is a sedimentary rock composed primarily of calcium carbonate (CaCO3) in the form of minerals like calcite and aragonite. It is formed from the accumulation or consolidation of shells, coral, algal remains, and precipitates.

/ˈlɪmstəʊn/

The name 'limestone' was first used in 1790 by James Hutton, derived from the Latin 'limus' meaning mud or clay.

sedimentary rock rock

chalk travertine marble

calcite aragonite

Earth's crust geological formations

geological formation natural object