Travertine is a kind of calcium carbonate with a compact strip structure that is created through water currents, especially the waterfalls and as well, hot and cold springs. Due to the chemical composition of calcite, the calcium carbonate in places with high values of evaporation leaves supersaturated solutions. Tufa is a porous travertine that could be found near waterfalls. Coquina is also a type of calcium carbonate rock with a weak structure; it is composed of shells and corals fragments.

Although the application of the calcium carbonate in the buildings’ construction is more appropriate for humid regions, its resistance against acidic materials is low; the acidic rainfall is a significant problem in areas where calcium carbonate is widely used. The dissolved acid in acidic rainfall can damage the buildings, thus, soft limestone powder can be used to neutralize the effects of acidic rainfalls.

The calcium carbonate is soluble in some compounds such as acids, therefore many erosional structures such as calcareous caves, potholes, and deep valleys may be created. Some erosional features are known as karst. Although calcium carbonate is less resistant than igneous rocks, its resistance is higher than other sedimentary rocks. Usually, the Calcium carbonate is present in hills and sink hole structures, and often could be seen with other sedimentary rocks such as clay in different regions.

ساختار اندام دام دارای ذخایری از منیزیم است. که بخش عمده ای از آن در است.خوان های مهره ها و دنده نگهداری می شود. و هنگامی که در دام ها کمبود منیزیم اتفاق می افتد،به منظور جبران آن از ذخیره منیزیم است.خوان‌هایشان است.فاده می‌کنند. که این حالت در دام های جوان اتفاق می افتد  در حالی که دام های بالغ به علت کمبود منیزیم در اثر بروز Tetany تلف می شوند.

Specialized in the production of (calcium carbonate), which is used in many industries such as: Paints, rubber, plastics and coatings industry, paper industry, building materials industry and industry Iron and steel, pharmaceutical industries, food, animal feed, fertilizers and industry Glass, optics, solar energy panels and many other industries.