Marble powder is used in a variety of industries: in paper production where it is the most important filler and coating pigment in the manufacturing process. The fillers and pigments give paper a high degree of whiteness, opacity, gloss and high printing quality at attractive prices.It is also known as calcium carbonate, a chemical compound with the formula CaCO3. At room temperature it is a white slightly soluble in water solid, which imparts a slightly basic reaction. Like other carbonates, it undergoes decomposition on heating or on contact with acidic substances, releasing carbon dioxide.Marbles are used principally for buildings and monuments, interior decoration, statuary, table tops, and novelties. Colour and appearance are their most important qualities.