湘东南鹿井矿田与花岗岩有关铀矿床地质特征及成因  

Geological Characteristics and Metallogenesis of Granite-Related Uranium Deposits in Lujing Ore Field,Southeastern Hunan Province

作　　者：董恒达 郑翔[1] 

机构地区：[1]东华理工大学地球科学学院,南昌330013

出　　处：《江西科学》2015年第1期20-24,51,共6页Jiangxi Science

基　　金：国家自然科学基金(40872072)

摘　　要：鹿井矿田处于闽、赣后加里东褶皱地块西缘,是我国的重要铀成矿区之一。鹿井矿田共探明众多矿床(点),矿体主要赋存在花岗岩体内及其外接触带的变质岩系内,其主要受断裂(特别是北西向断裂)和寒武系地层制,富铀层位提供了铀源,断裂为矿液运移、富集提供了通道和空间;接触带碎裂蚀变花岗岩型矿床铀矿化受构造控制,与花岗岩岩性及不同期次花岗岩接触带有关,矿化主要赋存于晚期花岗岩侵入的接触带外侧,特别是岩体隆起部位外侧花岗岩中。Located along western margin of post-Caledonian fold block in Fujian Province and Jiangxi Province,Lujing ore field is one of the important uranium ore districts in China. There are many ore deposits（ spots） having been verified on Lujing ore field. Controlled by fault（ especially west-north fault） and Cambrian strata,ore body mainly occurs in granite body and its external contact zone. Uranium-rich stratum provides uranium source,and fault provides channel and space for transport and enrichment of ore solution. Controlled by structure,the uranium mineralization of cataclastic-altered granite type deposit in contact zone is related to the lithology of granite and the contact zone of granite in varied epochs. Mineralization mainly occurs to the outside of contact zone intruded by late granite,especially outside granite where rock mass rises.

关 键 词：鹿井矿田 花岗岩 铀矿床 接触带 

分 类 号：P612[天文地球—矿床学]