硅质脉型铀矿床地质特征及成矿机制探讨--以甘肃革命沟矿床为例  

Geological characteristics and ore-forming mechanism of the siliceous vein-type Uranium deposit: A case study of Geminggou Uranium deposit,Gansu

作　　者：宋振涛[1] 赵红瑞 祁程[1] 王生云[3] 张占彬 荣骁 邵东 孔志召[1] 赵丛[1] SONG Zhen-tao1 , ZHAO Hong-rui2, QI Cheng1 , WANG Sheng-yun3, ZHANG Zhan-bin1 , RONG Xiao4, SHAO Dong4, KONG Zhi-zhao1 ,ZHAO Cong1(1. Airborne Survey and Remote Sensing Center of Nuclear Industry, Shijiazhuang 050002; 2. 514th Team of North China Geological Exploration Bureau, Chengde 067000; 3. Beijing Research Institute of Uranium Geology,Belting 100029 ; 4. No. 203 Research lnstitue of Nuclear ladustry,Xianyang 712000)

机构地区：[1]核工业航测遥感中心,石家庄050002 [2]华北地质勘查局五一四地质大队,承德067000 [3]核工业北京地质研究院,北京100029 [4]核工业二〇三研究所,咸阳712000

出　　处：《矿产勘查》2018年第1期45-54,共10页Mineral Exploration

基　　金：中国核工业地质局基础地质专项(编号:201544);核工业地质局项目(编号:地D1603)联合资助

摘　　要：文章在介绍革命沟矿床区域地质成矿环境、矿床特征、热液蚀变、元素地球化学、含铀矿物学特征的基础上,分析了成矿物质来源、热液活动及成矿物质迁移途径,论述了硅质脉型铀矿床成矿机制。认为革命沟矿床的形成是地层-岩体-构造-热液活动共同控制的特定时空域内的客观产物,区域含铀建造是成矿的物质基础,成矿热液源自幔汁(HACONS),岩浆及期后热液是铀迁移的载体,铀成矿模式强调了硅质脉后期热液沉淀过程是成矿物质的富集过程。This paper analyzes the ore-forming material source,hydrothermal activity,migration path of the ore-forming material,and discusses the ore-forming mechanism of siliceous vein-type uranium deposit after introduce the regional geological metallogenic environment,deposit characteristics,hydrothermal alteration,elemental geochemistry and uranium-bearing mineralogy of Geminggou deposit. Geminggou deposit is thought to be the objective product in special time-space domain collectively controlled by strata-rock mass-structure-hydrothermal activities. Namely,the regional uranium-bearing formation is the material basis for mineralization,the ore-forming hydrotherm was derived from the mantle ichor（ HACONS）,while the magma and postmagmatic hydrotherm served as the carrier for uranium migration. The metallogenic model of uranium emphasizes that the precipitation process of later siliceous vein hydrotherm is the concentration process of ore-forming material.

关 键 词：地质特征 元素地球化学 控矿因素 成矿机理 硅质脉型 革命沟矿床 

分 类 号：P619.14[天文地球—矿床学]