The ocean
Calcium carbonate is made of the elements calcium, carbon, and oxygen.
calcium carbonate
Calcium phosphate and calcium carbonate are found in bones .
calcium carbonate- CaCO3
Calcium, Carbon, Oxygen
calcium carbonate
'Marble' is meta-formosed limestone or chalk. Limestone or chalk has been subject to either heat and/or pressure, and become the harder shiny rock of marble. Marble is calcium carbonate!!!!
calcium carbonate - ca2cho
It is known as calcite, the main mineral of limestone and marble.
Dolomite limestone is a mixture of calcium carbonate and magnesium carbonate.
Limescale is mostly calcium carbonate with some magnesium carbonate mixed in there as well. So the answer would be calcium.
The most common mineral of calcium is calcium carbonate; also calcium sulfate, calcium magnesium carbonate, calcium silicates, etc. Calcium minerals exist practically in all the countries of world.