四川若尔盖铀矿田510矿床成矿地质特征及找矿潜力分析  

Geological Characteristics and Prospecting Potential of the 510 Deposit in the Ruo'ergai Ore Uranium Field,Sichuan Province

作　　者：陈田华[1] 张新民[1] 孙祥[2] 董之凯 马冰 李宝新[1] CHEN Tianhua;ZHANG Xinming;SUN Xiang;DONG Zhikai;MA Bin;LI Baoxin(Sichuan Institute of Nuclear Industry Geology,Chengdu,Sichuan 610052;Beijing Research Institute of Uranium Geology,Beijing 100029)

机构地区：[1]四川省核工业地质调查院,四川成都610052 [2]核工业北京地质研究院,北京100029

出　　处：《地质与勘探》2021年第6期1341-1353,共13页Geology and Exploration

基　　金：四川省科技计划项目“铀矿田找矿预测关键技术与铀及共伴生元素综合利用研究”(编号:2018SZ0273);四川省地质勘查基金项目“四川省若尔盖县降扎铀矿田向阳西沟-雪莲沟地段铀矿普查”(编号:川自然资函〔2019〕310号)联合资助。

摘　　要：510矿床为四川若尔盖碳硅泥岩型铀矿田具典型代表的矿床之一,该矿床地质特征代表了若尔盖铀矿田的总体特征。本文在区内已有研究成果基础上,依据近年来的最新勘查进展和成果认识,通过对区域地质背景、典型矿床地质特征及铀矿化特征的进一步总结与研究,初步认为地层、岩性、构造及岩浆热液活动与区内铀成矿关系密切,总结出了“灰岩与硅质岩组合建造-断裂构造-岩性界面-热液活动”多要素组合控矿的成矿规律。在此基础上,对区内的找矿潜力进行了评价与预测,利用区内成矿要素与已知矿体的分布特征,构建了区内深部矿体的三维数字可视模型,结合区内铀矿化空间分布特征及成矿规律,预测了深部找矿空间7处,提出了深部及外围资源扩大的方向,为区内下一步勘查工作部署提供了依据。The 510 deposit is one of the typical uranium deposits in the Ruo'ergai U-C-Si-mudstone type uranium ore field,representing the general characteristics of the Ruo'ergai U-ore field.On the basis of the existing research results and the latest exploration progress and achievements in recent years,this paper makes a further summary on the regional geological background,geological characteristics of typical deposits and uranium mineralization features.Our research suggests that the strata,lithology,structure and magmatic hydrothermal activity are closely related to the uranium mineralization in this area.And a model of formation combination of limestone and siliceous rock,fault structure,lithology interface,and hydrothermal activity is proposed to describe the mineralization law.On this basis,the prospecting potential in the area is evaluated and predicted.In terms of the distribution characteristics of metallogenic elements and known orebodies in the area,a three-dimensional digital visual model of deep orebodies in the area is constructed.Combined with the spatial distribution characteristics and metallogenic regularity of uranium mineralization,seven deep prospecting spaces are predicted,and the direction of deep and peripheral resources expansion is proposed,which provides a reference for the next exploration work in the area.

关 键 词：碳硅泥岩型铀矿 铀矿化特征 成矿规律 找矿预测 510矿床 四川省 

分 类 号：P612[天文地球—矿床学]