Chinese boron rich mineral resources. Boron mines are produced in 14 provinces (regions) across the country. There are 63 mines with proven reserves, with a total reserve of B 2 O 3 46.7 million tons, ranking the fifth in the world. In terms of provinces (regions), Liaoning has the largest concentration of boron ore, accounting for 57% of the country's total; followed by Qinghai, accounting for 24.7%. Boron ore type is dominated by Paleoproterozoic sedimentary metamorphism, such as boron ore in Yingkou and Kuandian, Liaoning, which is the main source of boron mineral resources in China; modern salt lake sedimentary boron deposits are also important, such as some in Qinghai and Tibet. Salt Lake Boron Mine.
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