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Geological characteristics and metallogenic regularity of lithium deposits in Dahongliutan-Bailongshan area, West Kunlun, China TEXT SIZE: A A A

Dahongliutan-Bailongshan area is the most important rare-metal concentration area in the West Kunlun-Karakorum where there are most concentrated granite pegmatites and most developed rare-metal mineralization. This paper comprehensively and systematically surmurized 21 lithium polymetallic deposits in this area based on the achievements of years of research, and divided the ore concentration area into the Dahongliutan ore field and Bailongshan ore field. The ore-bearing strata in the ore concentration area is the Bayankela Group, whose formation age is 214 similar to 223Ma. Meanwhile, the age of granite rock mass is 208 similar to 214Ma, the ages of non ore pegmatites and the ore-bearing pegmatites are 210 similar to 213Ma and 206 similar to 213Ma, respectively, which reflects the coupling relationship between the rare metal minerals and the Mesozoic magmatic rocks. The Li-bearing rare metal pegmatite veins formed by differentiation of the ore-forming parent rocks (biotite granite, biotite granite, etc.) in the late evolutionary stage are distributed in schistose zone or structurally weak area 500 similar to 2000m away from the intermediate-acid rock mass in the ore-forming strata of the Bayankala Group (or Kangxiwa Group), which conforms to the "trinity" ore-controlling law of structure-magma-horizon. At the same time, the project team divided the Dahongliutan-Bailongshan ore concentration area into five rare-metal mineralized pegmatite vein group belts from north to south, namely, the Aksayi rare-metal mineralized pegmatite vein group belt, the Dahongliutan north rare-metal mineralized pegmatite vein group belt, the Dahongliutan south rare-metal mineralized pegmatite vein group belt, the Bailongshan-Xuefengling lithium mineralized pegmatite vein group belt and the Fulugou-Shuangya lithium mineralized pegmatite vein group belt. Among them, the Bailongshan-Xuefengling and the Fulugou-Shuangya lithium mineralized pegmatite vein group belts are about 18km and 25km long, respectively, which are symmetrically zoned in the north and south of this area. The Fulugou-Shuangya lithium mineralized pegmatite vein group belt shows great prospecting potential, so it is an important belt for the next prospecting.

Publication name

 Acta Petrologica Sinica, Volume 39, Issue 7, Page 1931-1949, DOI 10.18654/1000-0569/2023.07.04, Published JUL 2023

Author(s)

 Wang He; Huang Liang; Ma HuaDong; Li Yong; Wang Wei; Xiao Fei; Bai HongYang; Wang KunYu

Corresponding author(s) 

 Wang He
 wanghe@gig.ac.cn
 -Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China
 -Univ Chinese Acad Sci, Beijing 100049, Peoples R China
 -Res Ctr Resource & Environm Xinjiang, Urumqi 830000, Peoples R China
 -Chinese Acad Sci, Inst Geochem, Guiyang 550002, Peoples R China

Author(s) from IGCAS   Wang He

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