Chemical Formula Of Marble Chalk Limestone

Calcium carbonate is a chemical compound with the formula caco3.

Chemical formula of marble chalk limestone.

In the lime industry limestone is a general term for rocks that contain 80 or more of calcium or magnesium carbonate including marble chalk oolite and marl. It is medicinally used as a calcium supplement or as an antacid but excessive consumption can be hazardous a. Chalk is a soft white porous sedimentary carbonate rock a form of limestone composed of the mineral calcite. Calcium carbonate is a chemical compound and calcium salt with the formula caco3.

Properties of rock is another aspect for limestone vs chalk. The only difference between limestone and marble is the crystalline structure. Marble is made of calcium carbonate caco3 which is also what limestone is made from. Calcium carbonate is the active ingredient in agricultural lime and is created when calcium ions in hard water react with carbonate ions to create limescale.

Further classification is done by composition as high calcium argillaceous clayey silicious conglomerate magnesian dolomite and other limestones. Streak of rock is the color of powder produced when it is. Chalk is a variety of limestone which is composed primarily of the shells of single celled calcium carbonate secreting creatures. Calcite is an ionic salt called calcium carbonate or caco 3.

The formula for limestone marble and chalk is same i e caco3 all of them are a form of calcium carbonate. Marble has a hard crystalline structure while chalk is amorphous in nature. Chalk like the other types of calcium carbonate is in the form of calcite which is a crystal. Calcite limestone chalk marble travertine aragonite and vaterite are calcium carbonate mineral sources.

Chalk is calcium carbonate and has the same chemical composition as limestone marble ground calcium carbonate and precipitated calcium carbonate. It is a common substance found in rocks as the minerals calcite and aragonite and is the main component of pearls and the shells of marine organisms snails and eggs. The types of limestone are chalk coquina fossiliferous limestone lithographic limestone oolitic limestone travertine tufa whereas types of chalk are not available. Limestone crystals are much smaller than that of marble and limestone is much more porous.

It forms under reasonably deep marine conditions from the gradual accumulation of minute calcite shells coccoliths shed from micro organisms called coccolithophores. Chemically there is no difference in them but they differ in their physical structure.