Calcium Carbonate is one of the chemical compounds which act as a shell of marine organisms, snails and eggshells. Calcium carbonate is also mainly found in the limestone. CaCo3 is the chemical formula of calcium carbonate and it is odourless. For more information about calcium carbonate visit knowaboutaragonitemineral.wordpress.com/2020/06/25/must-know-things-about-calcium-carbonate/ #calciumcarbonate