Geochemical characteristics of bauxites in northern Guizhou and analysis of its sedimentary environment

The bauxite occurred in ore-bearing rock series at the bottom of Liangshan Formation of Middle Permian System is characterized by constant thickness,fewer changes,and good ore quality.In recent years medium-large scale deposits are found successively and they form an important part of South ChongqingNorth Guizhou bauxite mineral assemblage area.Through the research on geochemical characteristics of trace elements and rare earth elements as well as geochemical clues for sedimentary environment of bauxite(bauxitite)in deposits of Daozhenxinmin,Yanping,Taoyuan and Wachangping of Wuchuan,it is verified that the bauxite deposits in northern Guizhou has the same provenance and non-marine freshwater deposit environment.