铀矿地质2026，Vol.42Issue(3)：385-402,18.DOI:10.3969/j.issn.1000-0658.2026.42.029
准噶尔盆地南缘楼庄子矿产地铀矿化特征及其成因指示
Characteristics and Genetic Indicators of Uranium Mineralization of Louzhuangzi Mineral Occurrence in the Southern Margin of Junggar Basin
摘要
Abstract
Louzhuangzi mineral occurrence is a newly recognized exploration discovery in recent years at the southern margin of Junggar Basin.No oxidized alteration zone has been found in Louzhuangzi mineral occurrence,and its uranium orebodies are all hosted within the grayish-white alteration zone,differing from the typical interlayer oxidation zone-type(or the roll-front type)sandstone-hosted uranium deposits.At least two different genesis models have been proposed,namely the"traditional interlayer oxidation zone-type mineralization with later strong uplift"and the"deep-sourced hydrocarbon-bearing fluid involvement plus two-stage mineralization".In this study,ore samples from four drill holes have been systematically collected,and thin-section petrographic observation,scanning electron microscopy(SEM),and electron probe microanalysis(EPMA)were performed,together with the whole-rock clay alteration analysis.The uranium minerals and their associated mineral assemblages have been summarized,and the characteristics of the grayish-white alteration and uranium mineralization were further analyzed and demonstrated.The results show that uranium in the Louzhuangzi mineral occurrence mainly occurs as two independent minerals—pitchblende and coffinite,together with abundant titanium-uranium mixtures.Uranium mineralization has a close spatial relationship with pyrite,carbonaceous debris,and bitumen,which exhibits both similarities and differences with the typical interlayer oxidation zone-type sandstone-hosted uranium deposits.At least a two-stage mineralization fluid activities,namely the traditional oxidized fluids and reduced hydrocarbon-bearing fluids are believed to take place in Louzhuangzi mineral occurrence.关键词
铀的赋存状态/成矿作用/头屯河组/楼庄子矿产地/准噶尔盆地南缘Key words
uranium occurrence/metallogenesis/Toutunhe Formation/Louzhuangzi mineral occurrence/southern margin of Junggar Basin分类
天文与地球科学引用本文复制引用
郭子欣,钟军,朱斌,周宏伟,何中波,贾为卫,吴玉,冀华丽..准噶尔盆地南缘楼庄子矿产地铀矿化特征及其成因指示[J].铀矿地质,2026,42(3):385-402,18.基金项目
新疆维吾尔自治区重大科技专项(编号:2024A03003-2) （编号:2024A03003-2）
中国核工业地质局铀矿科研项目(编号:202406-9) （编号:202406-9）
中核集团青年英才"菁英"项目(编号:QNYC2201) （编号:QNYC2201）
中核集团集中研发项目(编号:2021-143)联合资助. （编号:2021-143）
