Chemical Formula Of Marble Chalk Limestone

It forms under reasonably deep marine conditions from the gradual accumulation of minute calcite shells coccoliths shed from micro organisms called coccolithophores.

Chemical formula of marble chalk limestone.

Chalk is a variety of limestone which is composed primarily of the shells of single celled calcium carbonate secreting creatures. 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. Chemically there is no difference in them but they differ in their physical structure.

Chalk is calcium carbonate and has the same chemical composition as limestone marble ground calcium carbonate and precipitated calcium carbonate. The only difference between limestone and marble is the crystalline structure. Chalk is a soft white porous sedimentary carbonate rock a form of limestone composed of the mineral calcite. Further classification is done by composition as high calcium argillaceous clayey silicious conglomerate magnesian dolomite and other limestones.

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. Properties of rock is another aspect for limestone vs chalk. Calcium carbonate is a chemical compound with the formula caco3. Calcium carbonate is a chemical compound and calcium salt with the formula caco3.

Calcite is an ionic salt called calcium carbonate or caco 3. Marble has a hard crystalline structure while chalk is amorphous in nature. The chemical formula caco3represents a raw material that exists everywhere in nature whether dissolved in rivers and oceans melted as cold carbonatite lava and solidified as a mineral dripstone or as a parent material for whole mountain ranges. The formula for limestone marble and chalk is same i e caco3 all of them are a form of calcium carbonate.

The types of limestone are chalk coquina fossiliferous limestone lithographic limestone oolitic limestone travertine tufa whereas types of chalk are not available. The hardness of limestone is 3 4 and that of chalk is 1. Calcite limestone chalk marble travertine aragonite and vaterite are calcium carbonate mineral sources. Chalk like the other types of calcium carbonate is in the form of calcite which is a crystal.

Streak of rock is the color of powder produced when it is. Limestone crystals are much smaller than that of marble and limestone is much more porous.