Research On Tectonic Geochemistry And Prediction Of Ore Enrichment Center In Miaoershan Uranium Orefield, Xiangyangping Area

Xiangyangping uranium deposit is located in ziyuan County, Guangxi Province. It has been developed to a medium size uranium deposit in recent census work. This issue does some research in tectonic geochemistry, with a view to search concealed ore body and expand the scale of deposit.Working on the basis of predecessors’achievements, tha study indicates that the mineralization and trend of enrichment and migration of indicator elements is clearly in Xiangyangping uranium deposit mineralization tectonic. Uranium ore-forming hydrothermal fluid flow can be divided into the following four stages:uranium-microcrystalline quartz (chalcedony)-Hematite, uranium-pyrite-Hematite, uranium-fluorite and uranium-carbonate. Basically, the different period and stages of ore-forming fluid have the same substance. Uranium mineralization is close with the ore-forming tectonic transition from ductile to brittle deformation. The uranium occurrence location is mainly the late tectonic extensional brittle deformation zone.Under the research, the sequence with primary halo vertical zoning of Xiangyangping uranium deposit mineralization tectonic is: Ni-Rb-Bi-Sn-Cuâ†'W-Hg-As-U-Sb-Moâ†'Sr-Zn. The uranium body leading indicator elements are Ni, Cu, Rb, Sn, Bi. The mine indicator elements are As, Mo, Sb, W, Re, Hg. The tail indicator elements are Sr, Zn, establishing the tectonic geochemical exploration mode. Described The tectonic geochemical characteristics and unusual features of the study area. Through comprehensive analysis, it defines two ore-hunting prospect areas, Dapingli area and Laopengzi area. Pointing out the distribution characteristics, concealed features of uranium mineralization center in the F9, F10,F11tectonic zones, and prospecting direction of the next step.