The Calcium carbonate is especially used in architecture, and many historical masterpieces all around the world, especially in North America and Europe are made from this combination. Many buildings in Kingston, Ontario of Canada are made of calcium carbonate, so they are also called calcareous cities. Among the most important artworks of the world, the Abraham Lincoln Statue in Washington, the Parthenon Building in Athens, the Church ceiling of Kraków in Poland, and the Great Lion Statue of London’s Trafalgar Square are made of the calcium carbonate. Another feature of the calcium carbonate is that it could be easily crushed into smaller pieces. Meanwhile, its durability is long-lasting and could be well exposed on the surface. The application of the calcium carbonate in buildings was common in the early

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.

Pure limestone is often found in white and whitish colors. Due to the presence of impurities such as clay, organisms remains, iron oxide and other components, most of the limestone are found in different colors, especially if they are weathered. Based on their formation process, limestone could be seen in crystalline, clastic, granular or massive forms in nature. The presence of calcite, quartz, dolomite or barite crystals may create some small cavities in rocks. The Folk and Dunham classifications are used to scrutinize the limestone in detail.

Tanin Arad Yekta Company started its commercial activity in to supply raw materials for paints, plastics, inks, and adhesives industries, and since it has participated in and produced micronized mineral powders of calcium carbonate, talc, barite, ocher, lithopene, etc. It has micronized very soft granules in Aligudarz city. This company, by using experienced and experienced staff in the field of preparation and supply of various materials and providing technical advice, regarding the optimization of formulations and reducing the cost in the paint industry and other related industries, is an effective step for the country&#;s industries to flourish. Removed.