The common name of CaCO3 is calcium carbonate;

Calcium carbonate (CaCO?) is an inorganic compound, commonly known as gray stone, limestone, stone powder, marble, etc. Calcium carbonate is neutral, basically insoluble in water, and soluble in hydrochloric acid. It is one of the common substances on the earth. It is found in rocks such as aragonite, calcite, chalk, limestone, marble, and travertine. It is also the main component of animal bones or shells.

Calcium carbonate is also an important building material and has many uses in industry.

Extended information:

China's four major calcium carbonate production bases

Seven to eight thousand cement limestone deposits have been discovered across the country, of which there are proven reserves There are 1,286 deposits, including 257 large deposits, 481 medium deposits, and 486 small deposits (large deposits with ore reserves greater than 80 million tons, medium deposits with 40 to 80 million tons, and small deposits with less than 40 million tons). The reserves are 54.2 billion tons, of which limestone reserves are 50.4 billion tons, accounting for 93%; marble reserves are 3.8 billion tons, accounting for 7%.

The retained reserves are widely distributed in 29 provinces, municipalities and autonomous regions except Shanghai. Among them, Shaanxi Province has 4.9 billion tons of retained reserves, ranking first in the country; the rest are Anhui Province, Guangxi Autonomous Region, Sichuan (including Chongqing City) Province, each has reserves of 3.4 to 3 billion tons; the seven provinces of Shandong, Hebei, Henan, Guangdong, Liaoning, Hunan, and Hubei each have reserves of 3 to 2 billion tons;

Heilongjiang, Zhejiang, and Jiangsu The 13 provinces of Guizhou, Jiangxi, Yunnan, Fujian, Shanxi, Xinjiang, Jilin, Inner Mongolia, Qinghai, and Gansu each have reserves of 2 to 1 billion tons; the five provinces of Beijing, Ningxia, Hainan, Tibet, and Tianjin each have reserves of 500 to 200 million tons. .

Reference: Baidu Encyclopedia-Calcium Carbonate