铀矿地质2017，Vol.33Issue(2)：89-96,8.DOI:10.3969/j.issn.1000-0658.2017.02.004
鄂尔多斯盆地东北部纳岭沟铀矿床元素地球化学特征及其地质意义
Element Geochemical Characteristics and Geological Significance of Nalinggou Uranium Deposit, Northeastern Ordos Basin
摘要
Abstract
Nalinggou uranium deposit is one of the newly discovered in situ leachable sandstone-type uranium deposits in China.The orebody is of platy shape which is localized in sandbody of braided river in Zhiluo formation of middle Jurassic and controlled by paleo-interlayer oxidation zone.Study on the geochemical features of rock with different alteration shews that the change of the main elements in the alteration sandstone is mainly affected by sedimentary after diagenesis,water-rock interaction and the second reduction of oil and gas.Organic is higher in the mineralized sandstone,closely associated with organic matter content in the sandstone type uranium mineralization.Trace element enrichment or loss is relatively obvious in the mineralization of sandstone that could be affected by the late diagenetic reformation (hydrothermal).The alteration sandstone show the trace elements and rare earth elements features of crustal source type granite and LREE enrichment,which indicated that uranium rich granite from Yinshan and Daqingshan anciant land were an significant material source for Lower Zhiluo formation deposition in this area.δEu andδCe characteristics show that Nalinggou uranium deposits formed in weak oxidation-reduction transitional environment.These characteristics will provide a good indicator for the future prospecting exploration as well as the important exploration marks.关键词
纳岭沟铀矿床/元素地球化学/铀矿化/化学成分/微量元素/稀土元素Key words
Nalinggou uranium deposit/element geochemistry/uranium mineralization/major elements/trace elements/rare earth elements分类
天文与地球科学引用本文复制引用
罗晶晶,吴柏林,李艳青,庞康,张婉莹,孙斌,程相虎..鄂尔多斯盆地东北部纳岭沟铀矿床元素地球化学特征及其地质意义[J].铀矿地质,2017,33(2):89-96,8.基金项目
国家重点基础研究发展规划 (973)项目 (编号:2015CB453003)、国家自然科学基金项目(编号:41173060)和中国地质调查局项目 (编号:12120114009201,2120115013501). （973）
