云南省江城、勐腊一带钾矿床和盐溶岩类的特征、形成条件以及找矿问题

摘要

Potash deposits and various types of breccia-bearing argillaceous roeksalts and their surfacial salt-dissolved rocks are found in the Lower Tertiary strata in JiangehengMengla area, Yunnan Province. Distinct sedimentary cycles have been noticed for the potassium salt-bearing formations. These rocks are essentially mud stones cemented by salt minerals formed in stagnant, reducing environment in continental sabkhas. The potash deposits and potassium-bearing strata in this region are of marine origins as evidenced by dominant chlorides and high contents of Br and Rb in salt minerals.Methods for further prospecting efforts are also suggested.