This work was supported by National Natural Science Foundation of China(Grant No.40462001);the Guizhou Provincial Foundation for Excellent Scientific and Technological Talents;the Doctor Foundation of Guizhou University.The authors thank Prof.Zhang Chuanlin and Wang Zhiyun for their help in polishing the English of this paper.
The barite deposit in the Niutitang Formation of Lower Cambrian, in Tianzhu County, Guizhou Province, western China, is a superlarge barite deposit with about 2 × 10^9 tons of reserves. Mineral, petrological and geoc...