Volatile accumulation for the mineralization of Li-Be pegmatites in the northeastern Pamir, Western Kunlun, China
文献类型：期刊论文
| 作者 | Zhu, Mingtian2; Dong, Zhiguo1; Zhang, Lianchang3 |
| 刊名 | INTERNATIONAL GEOLOGY REVIEW
 |
| 出版日期 | 2022-06-12 |
| 页码 | 18 |
| 关键词 | P anomaly volatile accumulation Li-Be pegmatite Western Kunlun |
| ISSN号 | 0020-6814 |
| DOI | 10.1080/00206814.2022.2087109 |
| 英文摘要 | Li-Be mineralization in the northeastern Pamir is the most westerly portion of the newly defined Western Kunlun-Songpan-Ganze rare metal belt in China. This paper discusses the geochemistry and isotopic U-Pb-Sr-Nd-Hf systems of two Triassic granites and Li-Be pegmatites, trying to identify their genetic relationship. Our study shows that although the biotite monzogranites, the muscovite granites, and the Li-Be pegmatites have similar zircon and coltan U-Pb ages of 210 Ma, continuous crystallization could not completely account for their compositional and Sr-Nd-Hf isotopic diversity. In comparison with the biotite monzogranites, the muscovite granites exhibit strongly fractionated characteristics, with higher levels of SiO2, K2O, P2O5, Li, Be, Cs, Rb, and Ta, and are sourced from a partial melt of meta-pelite rocks, showing a genetical relationship with the Li-Be pegmatites. A model of volatile accumulation is an attempt to interpret some characteristics of the strongly fractionated muscovite granites and Li-Be pegmatites, which show dramatically elevated contents of P2O5 of 0.20-0.23% to Li-Be pegmatites of 0.4-2.64%, respectively. P2O5 might be an agency of the accumulation of fluxing compositions also including B, F, and H2O. Succeeding pegmatite-forming fluid exsolution and selective removal of Ca-Na-K to precipitate feldspar minerals far away from the parent granites should be accountable for some strongly fractionated characteristics in the residual melt, e.g. the enrichment of Rb, loss of Sr and Ba, and elevated negative Eu anomaly. Furthermore, this selective extractant of alkalis metal triggered by the accumulation of flux notably enhanced the contents of Li and Be in the remaining melts by three times, which might be also an important mechanism for the rare metal concentration in the Li-Be pegmatites by thousands of times. |
| WOS关键词 | POTASSIC MICROGRANULAR ENCLAVES ; CALC-ALKALINE GRANITOIDS ; MARKAM GNEISS DOME ; TECTONIC EVOLUTION ; ACCRETIONARY TECTONICS ; TIBETAN PLATEAU ; NORTHWEST CHINA ; TRACE-ELEMENT ; BLACK-HILLS ; ICP-MS |
| 资助项目 | Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau[2019QZKK0802] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000809735400001 |
| 出版者 | TAYLOR & FRANCIS INC |
| 资助机构 | Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau ; Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau ; Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau ; Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau ; Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau ; Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau ; Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau ; Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau ; Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau ; Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau ; Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau ; Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau ; Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau ; Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau ; Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau ; Second Comprehensive Scientific Survey of the Qinghai-Tibet Plateau |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/106075]  |
| 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 | Zhu, Mingtian |
| 作者单位 | 1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Mingtian,Dong, Zhiguo,Zhang, Lianchang. Volatile accumulation for the mineralization of Li-Be pegmatites in the northeastern Pamir, Western Kunlun, China[J]. INTERNATIONAL GEOLOGY REVIEW,2022:18. |
| APA | Zhu, Mingtian,Dong, Zhiguo,&Zhang, Lianchang.(2022).Volatile accumulation for the mineralization of Li-Be pegmatites in the northeastern Pamir, Western Kunlun, China.INTERNATIONAL GEOLOGY REVIEW,18. |
| MLA | Zhu, Mingtian,et al."Volatile accumulation for the mineralization of Li-Be pegmatites in the northeastern Pamir, Western Kunlun, China".INTERNATIONAL GEOLOGY REVIEW (2022):18. |
入库方式： OAI收割
来源：地质与地球物理研究所
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