摘要
华南是我国主要铀矿产区之一。根据赋矿围岩的不同,通常将华南广泛分布的铀矿床划分为花岗岩型、火山岩型和碳硅泥岩型等三种主要类型。本文在以往研究的基础上,总结了近年华南铀矿研究取得的若干进展。例如,沥青铀矿微区原位定年研究不断深入,获得一批较精确的成矿年龄;通过精细矿物学研究,发现了零价铀和高铀酸钙[(CaU^6+) O4]等以往在自然界少见的铀矿物;揭示华南不同类型的铀矿床是受白垩-古近纪岩石圈伸展事件统一控制并具有密切内在联系的有机整体;攻深找盲取得新突破,发现了新的成矿元素组合并预示了深部找矿的重要潜力。本专辑报道了近年华南铀矿研究的部分新进展,包括15篇文章,主要涉及这些铀矿床的地质地球化学特征、成矿时代、成矿过程、成矿动力学背景和找矿潜力等。
South China is one of the most important uranium producers in China. In terms of their host rocks, the uranium deposits in this region can be mainly divided into three types, i.e. the granite-hosted, the volcanic-hosted and the carbonaceous-siliceous-pelitic rock-hosted deposits. Combined with previous investigations, this contribution summarizes several progresses in the study of uranium deposits in South China. The achievements include:(1) More precious data set of ore-forming ages were provided through pitchblende in-situ U-Pb dating;(2) Detailed mineralogical study identified the rare natural native uranium and vorlanite[(CaU^6+)O4] in the granite-related deposits;(3) It was demonstrated that the three types of uranium deposits was an interrelated entirety which was triggered by lithospheric extension during the Cretaceous-Tertiary;(4) Breakthroughs were achieved in exploring deep deposits. This special issue contains 15 papers to show some latest progresses in the study of uranium deposits in South China, mainly including those in the geological and geochemical characteristics, ages of mineralization, ore-forming processes, geodynamic settings and prospecting potential for the uranium deposits.
作者
胡瑞忠
骆金诚
陈佑纬
潘力川
HU RuiZhong;LUO JinCheng;CHEN YouWei;PAN LiChuan(State Key Laboratory of Ore Deposit Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550081,China;College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《岩石学报》
SCIE
EI
CAS
CSCD
北大核心
2019年第9期2625-2636,共12页
Acta Petrologica Sinica
基金
中国科学院战略性先导科技专项(B类)(XDB18000000)
国家自然科学基金项目(41830432、U1812402)联合资助
关键词
华南铀矿床
成矿时代
成矿过程
动力学背景
找矿潜力
Uranium deposits in South China
Mineralization ages
Ore-forming processes
Geodynamic setting
Prospecting potential
作者简介
第一作者:胡瑞忠,男,1958年生,博士,研究员,从事矿床学和矿床地球化学研究;E-mail:huruizhong@vip.gyig.ac.cn.
