Rock Salt Mine

Rock Salt Mine

　　The Dayangzhou and Sanhu areas in Xingan County of this region are rich in rock salt deposits. According to surveys conducted by the 915 Geological Team of the Provincial Geological and Mineral Bureau, the average thickness of the salt layer is 10.06 meters, with a maximum depth of 1,100 meters from the surface. The estimated reserves amount to 110 million tons, including 60 million tons of industrial reserves and 50 million tons of design-utilizable reserves. Its main components are: 60–80% sodium chloride, along with associated minerals including 3–5% sodium sulfate (Na2SO4), 4–6% calcium sulfate (CaSO4), 0.15–0.35% magnesium sulfate (MgSO4), 0.01–0.13% potassium chloride (KCl), 0.002% iodine (I), and soluble harmful impurities (such as heavy metals and barium) that are below national standard limits. Multiple tests conducted by the Jiangxi Institute of Chemical Industry and the Ji’an Regional Health and Epidemic Prevention Department have confirmed that the salt meets national edible salt standards and is safe for both human and livestock consumption. Mining of this salt deposit commenced in 1987, with an annual output of 60 million tons of rock salt.