相山铀矿田邹家山矿床钛铀矿赋存特征及成因  

Occurring characteristic and genesis of brannerite at Zoujiashan uranium deposits,Xiangshan ore field

作　　者：王运[1] 胡宝群[1] 孙占学[1] 李学礼[1] 郭国林[1] 饶明辉[1] 

机构地区：[1]东华理工大学放射性地质与勘探技术国防重点学科实验室,江西抚州344000

出　　处：《铀矿地质》2010年第6期344-349,共6页Uranium Geology

基　　金：国家自然科学基金资助项目(编号:40862005和40872165);江西省自然基金资助项目(编号:2008GZH0053);江西省教育厅科技项目(编号:2007230)成果

摘　　要：随着开采深度的不断增加,邹家山铀矿床深部矿化的钛铀矿含量明显高于浅部。以铀矿石特征为研究重点,通过野外地质调查、岩相学、电子探针和化学分析等方法,初步查明钛铀矿的赋存特征:(1)钛铀矿包裹沥青铀矿;(2)围绕黄铁矿和二氧化钛矿物边缘生长;(3)钛铀矿在伊利石、磷灰石、萤石边缘产出;(4)少量沥青铀矿充填于钛铀矿中。钛铀矿空间分布特征为:在横向上集中于含矿断裂中,垂向上随深度增加而有含量增多的趋势。钛与铀的含量呈正相关关系,钛铀矿矿化仅有1期,而沥青铀矿则为两期。钛铀矿成因主要为沥青铀矿交代含钛矿物。With the deepening of exploitation, the brannerite content of deep ore is found obviously higher than in the shallow at Zoujiashan uranium deposit. Through field geological survey, petrographic methods, element chemical analysis and EPMA, etc, the occurrence of brannerite was found to have the following characteristics. （1） brannerite encapsulate uraninite, （2） grew around the edge of pyrite and titania, （3） occured in the edge of illite, apatite and fluorite, （4） small quantities of uraninite filled in brannerite. In spatial distribution, the brannerite are concentrated in ore-bearing faults plane and the content tend to increase with depth. Titanium and uranium show positive correlation. Brannerite has only one mineralization stage but uraninite has metasomatism of uraninite to titanium-containing two. The main cause of brannerite formation is the mineral.

关 键 词：邹家山铀矿床 钛铀矿 赋存特征 

分 类 号：P571[天文地球—矿物学]