Analysis:
Medical stone is porphyritic andesite or andesite porphyry, which is a component of andesite and has obvious porphyritic structure. The main porphyritic minerals are plagioclase and a small amount of magnesium-iron minerals (such as pyroxene and amphibole). Colors are gray, dark gray, light green and even grayish red. Mineral water filtered by Maifanshi rock stratum is called Maifanquan. Because Maifanshi is used in Chinese medicine to relieve pain, concentrate and heal wounds, some people claim that Maifanquan has the function of preventing diseases and aging. The record of medical stone in Compendium of Materia Medica is as follows: Medical stone is found in mountains and rivers. Its stones vary in size, including fists, goose eggs, lights or cakes. It's roughly like holding a ball of rice balls. There are grains, such as beans like rice, which are yellow and white. However, in the rocks in the stream, this shape is found. The smell is sweet, warm and nontoxic. Indications are all paralysis and gangrene. According to the above records, medical stone is named after its appearance. Traditional Chinese medicine lists it as a medicinal material for treating diseases, which is related to the minerals it contains. Some people call it a health stone.
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