Newly-recognized Triassic highly fractionated leucogranite in the Koktokay deposit (Altai, China): Rare-metal fertility and connection with the No. 3 pegmatite
文献类型：期刊论文
| 作者 | Shen, Ping1,3,4; Pan, Hong-Di2; Li, Chang-Hao1,3; Feng, Hao-Xuan1,3; He, Lan-Fang1,3,4; Bai, Ying-Xiong1,3; Luo, Yao-Qing1,3; Suo, Qing-Yu1,3; Cao, Chong1,3 |
| 刊名 | GONDWANA RESEARCH
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 112页码:24-51 |
| ISSN号 | 1342-937X |
| 关键词 | Coltan U-Pb age Muscovite40Ar 39Ar age Rare-metal leucogranite Tetrad effect Metallogenic potential |
| DOI | 10.1016/j.gr.2022.09.007 |
| 英文摘要 | Rare-metal granitic pegmatites are commonly associated with granites. However, for the Koktokay No. 3 pegmatite in the Chinese Altai, hosting a giant Li-Be-Nb-Ta-Cs-Rb-Hf deposit, the parental granites have not yet been found. Here we first recognized the ore-bearing leucogranites at Koktokay, in which the beryl (Be) and coltan (Nb-Ta) occur. Six coltan U-Pb ages of the leucogranites fall in a narrow range of 224.2 +/- 2.7-220.7 +/- 4.0 Ma which are in good agreement with our new coltan U-Pb age of 219.8 +/- 1. 3 Ma of the No. 3 pegmatite. Four muscovite 40Ar/39Ar ages from the same samples are from 181.1 +/- 1. 4 Ma to 177.2 +/- 1.2 Ma which are consistent with published 40Ar/39Ar age results (182.1-179.7 Ma) from the No. 3 pegmatite. Thus, the emplacement of the leucogranites and associated mineralization occurred in late Triassic which was followed by a new mineralization at early Jurassic. The leucogranites, consisting of muscovite albite granite and minor albite granite, are characterized by high Al2O3 and Na2O and show well-developed convex tetrad effect. They are peraluminous S-type granites and were formed by highly fractional crystallization and melt-fluid interaction. The leucogranites are enriched in volatile elements (B, F, P, and H2O) and lithophile (Li, Be, Nb, Ta, Cs, and Na) with very low Zr/Hf (8.2-13.8) and Nb/ Ta (0.8-5.9) ratios, indicating a fertile rock. The similar petrographic, geochemical and geochronological data between the leucogranites and the No. 3 pegmatite indicate that they are contemporaneous and cogenetic, implying a common magmatic source. A much larger, unexposed parental granite, from which the leucogranite and No.3 pegmatite have fractionated, is present at depth. A granite-pegmatite model is established that the parental granite at depth is connected with leucogranite and pegmatite at shallow which is likely responsible for the formation of the giant Koktokay No. 3 pegmatite. (c) 2022 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved. |
| WOS关键词 | ZIRCON U-PB ; ASIAN OROGENIC BELT ; CORNUBIAN ORE FIELD ; QZ-AB-OR ; GRANITIC PEGMATITES ; NW CHINA ; NORTHWEST CHINA ; TRACE-ELEMENTS ; GEOCHEMICAL CHARACTERISTICS ; GEODYNAMIC SETTINGS |
| 资助项目 | National Natural Science Foundation of China[91962213] ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences[132A11KYSB20190070] ; Regional Collaborative Innovation Project, Xinjiang[2020E01043] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000879536400002 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; Regional Collaborative Innovation Project, Xinjiang ; Regional Collaborative Innovation Project, Xinjiang ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; Regional Collaborative Innovation Project, Xinjiang ; Regional Collaborative Innovation Project, Xinjiang ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; Regional Collaborative Innovation Project, Xinjiang ; Regional Collaborative Innovation Project, Xinjiang ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; Regional Collaborative Innovation Project, Xinjiang ; Regional Collaborative Innovation Project, Xinjiang |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/107713]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 通讯作者 | Shen, Ping |
| 作者单位 | 1.Chinese Acad Sci, Sch Earth & Planetary Sci, Beijing 100049, Peoples R China 2.Changan Univ, Sch Earth Sci & Resources, Xian 710054, Peoples R China 3.Chinese Acad Sci, Key Lab Mineral Resources Res, Inst Geol & Geophys, Beijing 100029, Peoples R China 4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen, Ping,Pan, Hong-Di,Li, Chang-Hao,et al. Newly-recognized Triassic highly fractionated leucogranite in the Koktokay deposit (Altai, China): Rare-metal fertility and connection with the No. 3 pegmatite[J]. GONDWANA RESEARCH,2022,112:24-51. |
| APA | Shen, Ping.,Pan, Hong-Di.,Li, Chang-Hao.,Feng, Hao-Xuan.,He, Lan-Fang.,...&Cao, Chong.(2022).Newly-recognized Triassic highly fractionated leucogranite in the Koktokay deposit (Altai, China): Rare-metal fertility and connection with the No. 3 pegmatite.GONDWANA RESEARCH,112,24-51. |
| MLA | Shen, Ping,et al."Newly-recognized Triassic highly fractionated leucogranite in the Koktokay deposit (Altai, China): Rare-metal fertility and connection with the No. 3 pegmatite".GONDWANA RESEARCH 112(2022):24-51. |
入库方式： OAI收割
来源：地质与地球物理研究所
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