Geochronology and Geochemistry of Li(Be)-Bearing Granitic Pegmatites from the Jiajika Superlarge Li-Polymetallic Deposit in Western Sichuan, China

被引:10
|
作者
Hongzhang Dai [1 ]
Denghong Wang [1 ]
Lijun Liu [1 ,2 ]
Yang Yu [1 ]
Jingjing Dai [1 ]
机构
[1] MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources CAGS
[2] School of Earth Sciences and Resources, China University of Geosciences
基金
中国博士后科学基金;
关键词
granitic pegmmatites; rare mmetals; metallogenic epoch; geochemical characterizatiion; Jia ajika;
D O I
暂无
中图分类号
P618.2 [金属矿床(总论)]; P597.3 [];
学科分类号
0709 ; 070902 ; 081803 ;
摘要
Strategic emerging minerals such as lithium,beryllium,niobium and tantalum are the most important rare metals currently,especially with the increasing demand of emerging industries on rare metals in China.The Jiajika deposit with a complete Li-Be-Nb-Ta metallogenic series is the largest pegmatite type rare metal deposit in China at present.In this paper,systematic researches of geochronology and petrogeochemistry were carried out to understand the genetic relationships between mineralization and magma evolution in the Jiajika deposit,which might be helpful to further rare-element prospecting in Songpan-Garze area.Zircon LA-ICP-MS U-Pb dating yields a concordia age of 217±1.1 Ma and a weighted mean 206 Pb/238 U age of 217±0.84 Ma for the aplite from the No.308 pegmatite.Cassiterite LA-MC-ICPMS dating yields concordant ages of 211±4.6 Ma for the No.308 pegmatite vein and198±4.4 Ma for the No.133 pegmatite vein,indicating that the rare metal mineralization mainly occurred in the Late Indosinian Period, further suggesting that the granites, aplites and pegmatites in Jiajika formed during a relatively stable stage after the intense orogeny of the Indosinian cycle.The rare metal-bearing granitic rocks and pegmatites show a clear linear relationship between A/CNK and A/NK and are enriched in total alkalis and depleted in CaO,FeO,MnO,MgO,Ba and Sr.All barren rocks and mineralized rocks feature similar rare earth element and trace element geochemical patterns.Thus,these characteristics indicate that the aplites and pegmatites represent the highly differentiated products of the two-mica granite(MaG)in this area, which is the most likely parent magma.During the evolution of magma,strong alkali metasomatism occurred between the melt phase and the volatile-rich fluid phase; as a result,large-scale rare metal mineralization occurred in certain structural zones of the pegmatite veins in the Jiajika deposit.
引用
收藏
页码:707 / 727
页数:21
相关论文
共 50 条
  • [21] Geology, geochemistry and geochronology of the Jiaojiguanliangzi Fe-polymetallic deposit, Tengchong County, Western Yunnan (China): Regional tectonic implications
    Cao, Hua-Wen
    Zhang, Shou-Ting
    Lin, Jin-Zhan
    Zheng, Luo
    Wu, Jun-De
    Li, Dong
    JOURNAL OF ASIAN EARTH SCIENCES, 2014, 81 : 142 - 152
  • [22] Mineralogical characteristics and mineralization implication of Li and Be-bearing minerals from Zhawulong pegmatite-type rare-element deposit, western Sichuan, China
    Xiong Xin
    Li JianKang
    Zhang JiaMing
    Yan QingGao
    Wang Zhen
    ACTA PETROLOGICA SINICA, 2023, 39 (07) : 2085 - 2100
  • [23] Geologic scenario from granitic sheet to Li-rich pegmatite uncovered by Scientific Drilling at the Jiajika lithium deposit in eastern Tibetan Plateau
    Xu, Zhiqin
    Zheng, Bihai
    Zhu, Wenbin
    Chen, Yanjing
    Li, Guangwei
    Gao, Jianguo
    Che, Xudong
    Zhang, Rongqing
    Wei, Haizhen
    Li, Weiqiang
    Wang, Guoguang
    Wei, Guangyi
    Yan, Haoyu
    ORE GEOLOGY REVIEWS, 2023, 161
  • [24] Geochronology and geochemistry of the granites from the Jiabusi Ta-Nb-(Li-Rb-Cs) deposit at the northern margin of the North China Craton
    Zhang, Tianfu
    Hou, Zengqian
    Zheng, Yuanchuan
    Cheng, Xianyu
    Wang, Shaoyi
    Teng, Xueming
    ORE GEOLOGY REVIEWS, 2022, 147
  • [25] Columbite-Tantalite Group Mineral U-Pb Geochronology of Chaqiabeishan Li-Rich Granitic Pegmatites in the Quanji Massif, NW China: Implications for the Genesis and Emplacement Ages of Pegmatites
    Pan, Tong
    Ding, Qing-Feng
    Zhou, Xuan
    Li, Shan-Ping
    Han, Jie
    Cheng, Long
    FRONTIERS IN EARTH SCIENCE, 2021, 8
  • [26] Formation of the Granodiorite-Hosting Magushan Cu-Mo Polymetallic Deposit in Southern Anhui, Eastern China: Evidences from Geochronology and Geochemistry
    Qi, Huasheng
    Lu, Sanming
    Yang, Xiaoyong
    Zhou, Yuzhang
    Zhao, Lili
    Deng, Jianghong
    Li, Jianshe
    MINERALS, 2019, 9 (08)
  • [27] Zircon morphology, geochronology and trace element geochemistry of the granites from the Huangshaping polymetallic deposit, South China: Implications for the magmatic evolution and mineralization processes
    Li, Huan
    Watanabe, Koichiro
    Yonezu, Kotaro
    ORE GEOLOGY REVIEWS, 2014, 60 : 14 - 35
  • [28] Age, petrogenesis, and tectonic setting of granitic gneiss and amphibolite from the Weizigou gold deposit, Heilongjiang Province, NE China: Constraints from geochronology and geochemistry
    Lu, Siyu
    Hao, Yujie
    Zhang, Jinrui
    Gao, Yu
    GEOCHEMISTRY, 2022, 82 (03):
  • [29] Genesis of the Ganfang Li-Rb-Cs-Be-Ta-Sn rare metal deposit: Evidence from geochemistry, geochronology, and Nd isotopes
    Zhu, Yiting
    Li, Xiaofeng
    Wang, Chunzeng
    Wei, Xinglin
    Lentz, David R.
    ORE GEOLOGY REVIEWS, 2025, 179
  • [30] Geochemistry and geochronology of columbite-tantalite group minerals from the Chakabeishan pegmatite -type Li -Be deposit, North Qaidam Tectonic Belt
    Sun WenLi
    Zhao ZhiDan
    Mo XuanXue
    Dong GuoChen
    Li XiaoWei
    Yuan WanMing
    Tang Yan
    Wang Tao
    ACTA PETROLOGICA SINICA, 2023, 39 (11) : 3417 - 3433