龙首山芨岭岩体南带铀成矿地质条件及找矿方向  

Metallogenic geology condition and prospecting direction of uranium deposit in the southern of Jiling pluton in Longshou Mountain

作　　者：刘洪成[1] 宋振涛[2] 叶发旺[1] 

机构地区：[1]核工业北京地质研究院,遥感信息与图像分析技术国家级重点实验室,北京100029 [2]核工业航测遥感中心,河北石家庄050002

出　　处：《矿产与地质》2017年第4期657-665,共9页Mineral Resources and Geology

基　　金：中核集团龙腾二期创新项目(遥LTY1604)资助

摘　　要：芨岭岩体位于我国西北地区重要的龙首山铀多金属成矿带中段,铀矿化信息丰富,已探明数个矿床和大量铀矿化点。在阐述芨岭岩体南带成矿地质背景、铀源条件、铀矿化特征的基础上,结合岩石地球化学研究成果,系统分析了断裂构造、钠交代岩以及热液蚀变对铀矿化的作用,总结了铀矿床所处的地球物理场特征。在找矿方向上,认为钠交代型是今后勘查的重点,空间上应以花岗岩与闪长岩的混染接触带、花岗岩与大理岩接触构造破碎带以及钠交代岩发育区域为主要探索目标。Jiling pluton is located at the middle section of uranium polymetallic metallogenic belt of Longshou Mountain in northwest China.There are several deposits and large amount of uranium mineralization sites with abundant uranium mineralization information.On the basis of geological ore-forming setting,uranium source condition and uranium mineralization characteristics,with combination of the research achievement of rock geochemistry,the article has systematically analyzed the fault structure,sodium metasomatic rock and the function of hydrothermal alteration to uranium mineralization.It has also summarized the geophysical field feature of uranium deposits.It is proposed that the prospecting direction should be focus on uranium deposits of sodium metasomatic type in the future exploration.The main exploration targets are the mixed contact zone of granite and diorite,the contact structure and fractured zone of granite and marble and the distribution area of sodium metasomatic rock.

关 键 词：铀矿 地球化学特征 钠交代型 成矿条件 找矿方向 芨岭岩体 

分 类 号：P619.14[天文地球—矿床学]