狼山中部花岗岩岩体铀矿化特征  

Uranium mineralization characteristics of granite in central Langshan

作　　者：马杰 史保胤 谢非 MA Jie;SHI Baoyin;XIE Fei(Ningxia Nuclear Geological Survey Institute,Yinchuan 750021,China)

机构地区：[1]宁夏回族自治区核地质调查院,银川750021

出　　处：《世界核地质科学》2021年第4期479-485,共7页World Nuclear Geoscience

基　　金：北方砂岩型铀矿调查工程基金项目(编号:DD20160129-01、DD20160129-10)资助。

摘　　要：在前人资料的综合分析基础上,研究了狼山中部花岗岩岩体铀矿化特征。通过对狼山中部花岗岩岩体开展地面伽马总量测量、地面伽马能谱测量,大致查明岩体伽马强度、伽马场晕分布特征及铀、钍、钾分布特征,总结了岩体铀矿化特征及铀找矿前景。研究认为狼山中部花岗岩岩体具备较好的铀成矿条件,在断裂构造破碎带内各类矿化蚀变强烈,为铀的迁移和富集提供了有利通道和富集环境,构造破碎带中已发现诸多铀矿化及异常点带,岩体既是丰富的铀源体也是较好的赋铀体。In order to take a breakthrough in uranium prospecting in the central Langshan,uranium mineralization characteristics of granite pluton was studied based on the comprehensive analysis and research of previous data,The ground total gamma and gamma energy spectrum measurement were conducted in the granite pluton.The gamma intensity and distribution characteristics,halo,and the distribution of uranium,thorium and potassium were roughly identified and the uranium mineralization characteristics were summarized for the future prospecting.It was considered that the granite in the central Langshan has high uranium content and can act as the main uranium source in the study area.The uranium leaching rate of the pluton is high,which may provide abundant material sources for uranium mineralization.The fault structure is well developed,and the scale is large,which can served as both the uranium migration channel and enrichment space for uranium mineralization and a lot of uranium anomaly and mineralization were found in the structural fracture zones,which are presented by mineralization points 1502 in the north and 5-1501 in the middle of the study area.All mineralization and alteration in the structural fracture zone are intense,which indicated the favorable environment for uranium mineralization.

关 键 词：铀矿化 构造破碎带 铀源体 蚀变特征 狼山中部 

分 类 号：P619.14[天文地球—矿床学]