Relations of Uranium Enrichment and Metal Sulfides within the Shuanglong Uranium Deposit,Southern Ordos Basin

作     者：Yuhan Sun Yangquan Jiao LiqunWu Hui Rong Yuhan Sun;Yangquan Jiao;Liqun Wu;Hui Rong

作者机构：Key Laboratory of Tectonics and Petroleum ResourcesChina University of GeosciencesMinistry of EducationWuhan 430074China School of Earth ResourcesChina University of GeosciencesWuhan 430074China 

出 版 物：《Journal of Earth Science》 (地球科学学刊（英文版）)

年 卷 期：2022年第33卷第2期

页      面：395-408页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：supported by the National Key Research and Development Program of China (No.2018YFC0604202) the National Science Fund Project (No.42172128) the International Geoscience Programme (No.IGCP-675) 

主　　题：uranium mineralization metal sulfides hydrogen sulfide paragenetic sequences Shuanglong uranium deposit ore deposit geology 

摘      要：Large quantities of metal sulfides are widely distributed in uranium ores from the Middle Jurassic Zhiluo Formation of the Shuanglong uranium deposit,southern Ordos Basin,providing a convenient condition to study the relationship between metal sulfides and uranium *** morphology and composition of uranium minerals and metal sulfides are illustrated to study uranium mineralization and mechanisms of *** minerals can be broadly categorized as pitchblende,coffinite and *** sulfides associated with uranium minerals are pyrite,sphalerite,chalcopyrite and *** assemblages of various metal sulfides and uranium minerals indicate that they are coeval,but the order of formation is *** on mineralogical observations,paragenetic sequences for mineral assemblages are *** of Fe-Ti oxides forms Ti oxides,brannerite and *** formation of chalcopyrite was later than that of ***(Pb Se)replaces sphalerite or shows isomorphism with *** are three genetic types of galena,of which typeⅠis related to tectonic thermal events and can interact with uranyl ions to form uranium oxides and Pb;.When sulfur activity is relatively high,Pb;can form new anhedral galena,that is,typeⅡ.TypeⅢof galena is related to the decay of uranium *** genetic order of the main minerals was determined as follows:Fe-Ti oxidesTi oxides/sphalerite/pyriteclausthalite/galenaⅠ/chalcopyritegalenaⅡ/uranium mineralsgalenaⅢduring the diagenetic *** sulfide(H;S)is a decisive factor in the interaction between metal sulfides and *** ions can react with H;S,accompanied by precipitation and enrichment of uranium minerals.