西大明山成矿带碳硅泥岩型铀矿找矿靶区圈定及优选  

Delineation and Optimization of Exploration Target for Carbonaceous-Siliceous-Argillaceous Type Uranium Deposit in Xidamingshan Metallogenic Belt

作　　者：李治兴[1] 漆富成[1] 秦明宽[1] 何中波[1] 张字龙[1] 王文全[1] 付锦[1] 刘祜[1] 

机构地区：[1]核工业北京地质研究院,中核集团铀资源勘查与评价技术重点实验室,北京100029

出　　处：《铀矿地质》2018年第1期1-8,共8页Uranium Geology

基　　金：中国核工业地质局“湘西北黑色岩系非常规铀资源调查评价项目”(编号:地D1703)资助

摘　　要：通过综合分析大新铀矿床和巴江铀矿床等典型矿床的成矿地质环境、成矿地质特征、铀成矿地质作用,总结西大明山成矿带的铀成矿规律,笔者认为尽管带内存在堆积富集的古溶岩型铀矿,但其不是主要的资源类型,研究区内仍应以寻找热液叠加改造型铀矿为主要找矿目标。同时,总结和归纳了该带热液叠加改造型的碳硅泥岩型铀矿预测要素变量,主要有:前泥盆系剥蚀区、控矿构造、岩体、铀矿化信息、化探异常和有利岩相等。采用固体矿产评价方法和MRAS技术进行找矿靶区圈定和优选,为带内下一步的铀矿勘查提供了依据。By comprehensive analyzing the metallogenic geology environmet,metallogenic geology characteristics,uranium metallogenic geology mineralization of typical deposits of Daxin and Bajiang in Xidamingshan metallogenic belt,the uranium metallogenic regularity was summarized.It was believed that hydrothermal superimposed uranium deposite is the main type in Xidamingshan metallogenic belt for carbonaceous-siliceous-argillaceous type uranium deposit although there is uranium enrichment in ancient karst,predicted essential factorv variates of hydrothermal superimposed type carbonaceous-siliceousargillaceous uranium deposite mainly include denuded zone of pre-devonian rocks,ore-controlling structure,pluton,uranium mineralized information,geochemical anomaly and favorable facies.Solid mineral evaluation method and MRAS technology were used to delineate and optimize the target area,which can provide scientific basis to uranium exploration and strategic target selection.

关 键 词：碳硅泥岩型铀矿 预测要素 靶区圈定及优选 西大明山成矿带 

分 类 号：P619.14[天文地球—矿床学]