Calcium carbonate Indonesia  (CaCO3) dibentuk oleh sedimentasi terumbu karang, siput – siput yang menjadi fosil dan kerang - kerang kecil.

Calcium carbonate for agricultural is widely used to neutralize soil acidity (pH control) and also supply valuable calcium (Ca).

Calcium carbonate in Indonesia with chemical formula CaCO3 is produced by sedimentation of the coral, fossilized snails, and small shells.