Calcium carbonate is a chemical compound with the chemical formula CaCO . It is a common substance found in rocks as the minerals calcite and aragonite and is the main component of eggshells, gastropod shells, shellfish skeletons and pearls. Formula: CaCO3 Molar mass: 100.0869 g/mol IUPAC ID: Calcium carbonate Density: 2.71 g/cm Melting point: 825 C ChemSpider ID: 9708
