摘要
通过对赣南地区变质岩离子吸附型稀土矿床进行岩石学、稀土元素地球化学和矿床地质特征研究,探讨变质岩离子吸附型稀土矿床的控矿因素、矿床成因及下一步找矿方向。赣南地区变质岩的原岩时代主要为青白口纪—奥陶纪,变质岩的稀土元素丰度较高,属轻稀土富集型。已发现的离子吸附型稀土矿床主要赋存于震旦纪—青白口纪变质岩中,以青白口纪库里组和南华纪寻乌岩组为主。石城—宁都—瑞金浅变质岩区和会昌—安远—寻乌中深变质岩区可作为离子吸附型稀土矿勘查的首选地区。
Based on the geological features of metamorphic rock ion- adsorption REE ore deposit in Southern Jiangxi, this study investigated ore-controlling factors and ore-forming mechanism using petrography and geochemistry analysis, and finally outlined the future prospecting direction in this area.The protolith age of metamorphic rocks in Southern Jiangxi is mainly in the Qingbaikou period- Ordovician period.The metamorphic rocks are characterized by high REE concentration, suggesting that the deposit belongs to LREE enriched type.The ion-adsorption type REE ore deposits, which have been found to occur mainly in the metamorphic rocks of Sinian period-Qingbaikou period, consist predominantly of Kuli Formation of Qingbaikou System and Xunwu Formation of Nanhuan System.The Shicheng-Ningdu-Ruijin epimetamorphic area and the Huichan-Anyuan-Xunwu mesometamorphic rock area are the first choice for exploration of the ion- adsorption REE ore deposits.
作者
陈斌锋
邹新勇
彭琳琳
周兴华
阙兴华
张青
CHEN Bin-feng;ZOU Xin-yong;PENG Lin-lin;ZHOU Xing-hua;QUE Xing-hua;ZHANG Qing(Geological Survey Team of Gannan, Bureau of Geology and Mineral Exploration and Development of Jiangxi Province, Ganzhou 341000, China)
出处
《华东地质》
2019年第2期143-151,共9页
East China Geology
基金
基本科研业务费专项基金“赣南变质岩离子吸附型稀土矿成矿规律与找矿方向研究(编号:YYWF201527)”
财政部、工业和信息化部、国土资源部“江西省赣州市稀土资源远景评价”
中国地质调查局“华南重点矿集区稀有稀散和稀土矿产调查(编号:DD20160056)”项目联合资助
关键词
赣南地区
变质岩
离子吸附型稀土矿
地质特征
找矿方向
South Jiangxi
metamorphic rocks
ion-adsorption REE ore
geological characteristics
prospecting direction
