铀矿地质2025，Vol.41Issue(6)：1043-1054,12.DOI:10.3969/j.issn.1000-0658.2025.41.072
广西新村地区新发现铀矿体矿石类型、组合及地球化学特征
Ore Types,Assemblages,and Geochemical Characteristics of Newly Discovered Uranium Ore Bodies in Xincun Area,Guangxi
摘要
Abstract
Motianling pluton,located in Xuefengshan-Motianling uranium metallogenic belt,is an important part of the Jiuwandashan-Yuanbaoshan uranium metallogenic district in China.Xincun area is located at the east side of Motianling pluton and an important exploration prospect in Motianling area.In order to systematically explore uranium mineralization in the peripheral area of Xincun sector,the characteristics of uranium mineralization and the sources of ore-forming materials in the area were studied from the aspects of ore characteristics,occurrence of uranium minerals,combination of mineral alteration and the geochemical characteristics of ore-host rocks.The results show that two types of mineralization of uranium-silicide type and uranium-fluorite type were developed in the sector,and uranium mainly occurred as pitchblende,containing a small amount of uranite.Microcrystalline quartz,fluorite,colloidal pyrite,hematite and other minerals were the most favorable alteration mineral association in uranium mineralization period.LA-ICP-MS analysis of REE of pitchblende is rich in LREE,which is similar to that of ore-hosting granite as a whole,indicating that the ore-forming materials may come from Motianling pluton.δ34S values of in-situ sulfur isotopes in the ore-forming period range from-6.52‰ to-10.03‰,which also indicates that the sulfur may come from Motianling pluton and the metamorphic rock basement.关键词
沥青铀矿/稀土元素/硫同位素/摩天岭岩体/新村地区Key words
pitchblende/REE/sulfur isotope/Motianling pluton/Xincun area分类
天文与地球科学引用本文复制引用
吴昆明,麻乾坤,庞雅庆,文成,谢飞,李礼,王勇剑..广西新村地区新发现铀矿体矿石类型、组合及地球化学特征[J].铀矿地质,2025,41(6):1043-1054,12.基金项目
中国核工业地质局地勘项目(编号:202223)资助. （编号:202223）
