Where does Chinese medical stone come from?

A special nonmetallic mineral resource, namely medical stone related to diet. The shape of medical stone is like a spot, yellow or white, much like a wheat. Li Shizhen, a great medical scientist in the Ming Dynasty in China, recorded in Compendium of Materia Medica: "It is shaped like holding a mass of wheat and rice, with grains like beans and rice, yellow and white." Medical stone smells sweet and nontoxic, and is mainly used for all carbuncle and hair back. "Therefore, the medical stone got its name. 1983, the personnel of Shenyang Institute of Geology and Mineral Resources discovered a high-quality medical stone named Chinese medical stone in Pingdingshan, Naiman Banner, Tongliao City, Inner Mongolia. Scientists have determined that medical stone is a subvolcanic ore. It contains more than 20 kinds of trace elements such as iron, magnesium, potassium, sodium, calcium, manganese, Qin, phosphorus, silicon and sulfur, which are beneficial and harmless to human health. The water soaked with medical stone is equivalent to mineral spring and senile arteriosclerosis, which has the functions of diuresis, stomach strengthening and liver protection, so it is called health-care medical stone. Medical stone is also an excellent natural food preservative and refrigerator deodorant. The mine was developed by Zhejiang-China Medical Stone Joint Development Company, and the Chinese Medical Stone series food was made by the Department of Food Industry Economics of Heilongjiang University of Commerce, which has passed the appraisal and sold all over the country.