摘要
香草地区位于九嶷山岩体西部,金鸡岭岩体与雪花顶岩体夹持部位。在总结香草地区地质特征、构造控岩控矿特征基础上,对矿集区内的构造地球化学特征和铀矿物进行分析。研究结果表明,香草地区构造岩稀土配分模式均为右倾平缓型,负铕异常相对不明显,轻稀土含量高,重稀土含量低,与U相关性密切的元素主要为W、Be和Pb。铀矿化可以分为成岩时形成和后期构造热液形成两种。NE向含矿构造中铀矿物以沥青铀矿为主,铀矿化与赤铁矿化、黄铁矿化和磷灰石相关。香草地区NE向断裂带具有较好的铀成矿潜力,为今后的工作提供了依据。
The Xiangcao deposit is located in the western part of Jiuyishan granite,and sandwiched between the Jinjiling granite and Xuehuading granite.Based on the summary of geological characteristics and structural rock and ore control characteristics in the Xiangcao deposit,the structural geochemical characteristics and uranium minerals in the ore concentration area through mineral geochemistry are analyzed.The results show that in the Xiangcao deposit,the REE distribution pattern is right inclined and gentle,with weakly negative Eu anomaly,and the rocks high LREE contents and low HREE contents.The elements closely related to U are W,Be and Pb.Uranium mineralization can be divided into diagenetic formation and late tectonic hydrothermal formation.The main uranium mineral of the NE trending structural is pitchblende.Uranium mineralization is related to hematite,pyrite and apatite.It is considered that the NE trending fault zone in the Xiangcao deposit has good uranium metallogenic potential,which provides a basis for future work.
作者
徐勇
XU Yong(Key Laboratory of Metallogenic Prediction of Nonferrous Metals,Ministry of Education,Central South University,Changsha 410083,China;Changsha Uranium Geology Research Institute,CNNC,Changsha 410007,China;Hunan Engineering Technology Research Center for Evaluation and Comprehensive Utilization of Associated Radioactive Mineral Resources,Changsha 410007,China)
出处
《东华理工大学学报（自然科学版）》
CAS
2022年第4期345-354,共10页
Journal of East China University of Technology(Natural Science)
基金
中国核工业地质局项目“诸广中段鹿井矿田及邻区铀矿资源调查评价与勘查”(202231)。
关键词
地球化学特征
构造
铀成矿
香草地区
geochemical characteristics
structure
uranium mineralization
Xiangcao area
