Geothermal-type Lithium Resources in Southern Xizang,China  

作　　者：WANG Chenguang ZHENG Mianping ZHANG Xuefei WU Qian LIU Xifang REN Jianhong CHEN Shuangshuang 

机构地区：[1]MLR Key Laboratory of Saline Lake Resources and Environments,Institute of Mineral Resources,Chinese Academy of Geological Sciences(CAGS),Beijing 100037,China [2]Center for High Pressure Science and Technology Advanced Research,Beijing 100094,China [3]R&D Center for Saline Lakes and Epithermal Deposits,CAGS,Beijing 100037,China [4]Institute of Mineral Resources,CAGS,Beijing 100037,China [5]School of Gemology and Materials Technology,Hebei GEO University,136 Huaiandong Road,Shijiazhuang 050031,China [6]Gemstone Testing Center of Hebei Geo University,136 Huaiandong Road,Shijiazhuang 050031,China [7]Guangdong Provincial Key Laboratory of Geodynamics and Geohazards,School of Earth Sciences and Engineering,Sun Yat-Sen University,Guangzhou 510275,China

出　　处：《Acta Geologica Sinica(English Edition)》2021年第3期860-872,共13页地质学报（英文版）

基　　金：This work was financially supported by the Major Program of the National Natural Science Foundation of China(Project Grant No.91962219);the National Natural Science Foundation of China(Grant No.U1407207);the Beijing Dizhiguang New Energy Technology Research Institute Co.,Ltd,China Geological Survey(Project Grant No.DD20190172);the National Key Research and Development Program of China(Grant Nos.2017YFC0602806 and 2017YFC0602802).

摘　　要：High-temperature geothermal water has abundant lithium(Li)resources,and research on the development and utilization of geothermal-type lithium resources around the world are increasing.The Qinghai–Tibetan Plateau contains huge geothermal resources;especially,Li-rich geothermal resources in southern Xizang,southwestern China,are widely developed.The Li-rich geothermal spots in Xizang are mainly distributed on both sides and to the south of the Yarlung Zangbo suture zone.Such resources are often found in the intensely active high-temperature Li-rich geothermal fields and,compared with other Li-rich geothermal fields around the world,the Li-rich geothermal fluid in the Xizang Plateau,southern Xizang is characterized by good quality:the highest reported Li concentration is up to 239 mg/L;the Mg/Li ratio is extremely low and ranges from 0.03 to 1.48 for most of the Li-rich geothermal fluid;the Li/TDS value is relatively high and ranges from 0.25–1.14%compared to Zhabuye Li-rich salt lake(0.19%)and Salar de Uyuni(Bolivia)(0.08–0.31%).Continuous discharge has been stable for at least several decades,and some of them reach industrial grades of salt lake brine(32.74 mg/L).In addition,elements such as boron(B),caesium(Cs),and rubidium(Rb)are rich and can be comprehensively utilized.Based on still-incomplete statistics,there are at least 16 large-scale Li-rich hot springs with lithium concentration of 20 mg/L or more.The total discharge of lithium metal is about 4300 tons per year,equivalent to 25,686 tons of lithium carbonate.Drilling data has shown that the depth is promising and there is a lack of volcanism(non-volcanic geothermal system).With a background of the partial-melting lower crust caused by the collision of the Indo-Asia continent and based on a comprehensive analysis of the tectonic background of southern Xizang and previous geological,geophysical,and geothermal research,deep molten magma seems to provide a stable heat source for the high-temperature Li-rich geothermal field.The Li-rich parent geothermal

关 键 词：geothermal resources LITHIUM Xizang(Tibet) 

分 类 号：P618.71[天文地球—矿床学]