修武盆地下寒武统黑色岩系铀矿物赋存特征及富集机理  

Existing and Enriching Mechanism of Uranium Minerals From Lower Cambrian Black Rock Series in Xiuwu Basin

作　　者：王运[1,2] 胡宝群[1] 高海东 李文成 伯慧 郭国林[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 [2]江西省煤田地质勘察研究院,江西南昌330000 [3]江西省核工业地质调查院,江西南昌330000

出　　处：《铀矿地质》2014年第1期1-6,22,共7页Uranium Geology

基　　金：国家自然科学基金项目(编号:40862005和41172078);放射性地质与勘探技术国防重点学科实验室开放基金项目(编号:2011RGET019)

摘　　要：通过野外地质调查、岩相学、地球化学和电子探针等分析方法，初步查明了修武盆地下寒武统黑色岩系中的铀矿物主要为磷钙铀矿和含磷钙钛铀矿，且多数以独立矿物形式存在，矿物颗粒微小，约1～3μm，少量与钛矿物共生；黑色岩系沉积受海底热液影响，其物源来自陆地和海底热水沉积物，由两者混合组成，且以陆源为主；铀的富集与碳、磷等元素关系密切。Based on the field geological survey, petrographic study, element chemical analysis and EP- MA, etc. It was found that uranium is enriched in the bone coal in the lower Cambrian black rock series of Xiuwu basin. Uranium minerals is mainly existed in form of phosphurancalcilite and phosphorus-contai- ning brannerite of which most are independent mineral with the size about 1-3 μm, and some grows a- round the edge of titania. Due to the affluence of hydrothermal fluid to seafloor deposition, the prove- nance of black rock series, is composed of terrestrial and submarine hydrothermal sediments which is mainly terrestrial . The enrichment of U element is closely related to the accumulation of C, P and other elements.

关 键 词：修武盆地 黑色岩系 铀矿物 赋存特征 富集机理 

分 类 号：P598[天文地球—地球化学]