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

CHARACTERISTICS,CONDITIONS OF FORMATION AND PROSPECTING OF THE POTASH DEPOSITS AND SALT DISSOLVED ROCKS IN JIANGCHENG-MENGLA AREAS,YUNNAN PROVINCE

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.

Potash deposits and various types of breccia-bearing argillaceous rocksalts and theirsurfacial salt-dissolved rocks are found in the Lower Tertiary strata in Jiangcheng-Mengla area,Yunnan Province.Distinct sedimentary cycles have been noticed for thepotassium salt-bearing formations.These rocks are essentially mud stones cemented bysalt minerals formed in stagnant,reducing environment in continental sabkhas.Thepotash deposits and potassium-bearing strata in this region are of marine origins asevidenced by dominant chlorides and high contents of Br and Rb in salt minerals.Mcthods for further prospecting efforts are also suggested.