Limestone Chalk And Marble Are Different Forms Of Calcium Carbonate

Over millions of years layer build up and pressure from the top layer changes the bottom layer into chalk.

Limestone chalk and marble are different forms of calcium carbonate.

Chalk is a soft form of limestone that is light in color. The transformation process consists in decarbonating limestone to separate cao and co 2 and then recombining these elements in a chemical reactor the final product has the same chemical composition as gcc but with different properties in terms of particle size distribution particle. A mineral is an element or a chemical compound that is normally crystalline and that has been formed as a result of geological processes part of mineralogical. Therefore limestone is a type of sedimentary rock formed by the deposition of material at the earth s surface or within water bodies.

In warm clear tropical waters corals are more abundant than towards the poles where the waters are cold. Chalk is a form of limestone. It is formed from the skeletal remains of very small marine organisms such as foraminifera. Rocks such as chalk marble and limestone are mainly composed of the mineral calcite or other crsytalline forms of calcium carbonate but can contain other minerals or chemicals.

Limestone is a very common sedimentary rock consisting of more than 50 calcium carbonate. Therefore this mineral is highly alkaline. Although it occurs in many different forms its origins can be traced back to either chemical or biochemical processes that occurred in the geological past often tens to hundreds of millions of years ago. By nature calcium carbonate occurs in the forms of chalk limestone and marble.

Tufa typically forms near hot springs or lakes where the waters have a high concentration of calcium carbonate. Limestone chalk marble travertine tufa and others. The carbonate minerals form the rock types. Calcium carbonate occurs as aragonite calcite and dolomite as significant constituents of the calcium cycle.

The source of these calcium depositions are usually the left over shell secretions skeletal fragments of marine organisms such as corals. These are two different forms of calcium carbonate itself. The skeletal remains of dead sea animals sink to the seabed. The key difference between limestone and chalk is that the limestone contains both minerals calcite and aragonite whereas chalk is a form of limestone which contains calcite.