Mineralogical characteristics of the leucogranite-pegmatite in the Yardoi Gneiss Dome, Himalaya, Tibet: Implication to the rare -metal mineralization.
文献类型：期刊论文
| 作者 | Zhao JunXing1; He ChangTong1,2; Shi RuiZhe1,2; Qin KeZhang1,2; Yu KeLong1,2; Qiu JunTing3; Li ZhenZhen4; Zhou QiFeng5 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2022-07-01 |
| 卷号 | 38期号:7页码:1981-2002 |
| 关键词 | Ore -forming mechanism Magmatic differentiation Mineral compositions Pegmatite Himalaya |
| ISSN号 | 1000-0569 |
| 英文摘要 | In recent years, it has been proposed that the model of the Himalayan highly -differentiated Cenozoic leucogranite makes this belt gradually become a highly -potential strategic prospective area for the rare -metal mineralization in China. At present, the type of metal assemblages in the northern Tethys Himalayan belt is dominated by beryllium -niobium -tantalum ( tin -tungsten) assemblage, while the southern Higher Himalayan belt is dominated by lithium -beryllium -niobium -tantalum assemblage. The present study has newly discovered the beryl -bearing pegmatites in the Yardoi Gneiss Dome, and the detailed field observation, internal structures of pegmatites and mineralogical compositions have been analyzed by in -situ microanalysis of EPMA and LA-ICPMS on the feldspar, mica, tourmaline and beryl from the leucogranite-pegmatite. Finally, all the results comprehensively shape the degree of magmatic differentiation of the Yalaxiangbo leucogranite-pegmatite and its rare metal mineralization potential. Based on the detailed field observation and in -situ microanalysis of minerals, the following concluding remarks were obtained: 1) rare -metal minerals in the Yalaxiangbo leucogranite and pegmatite rocks are mainly beryl hosted in the microline-albite pegmatite; 2) compositions of the mica minerals, feldspars, tourmalines and beryl were controlled by the magmatic differentiation, and the elemental substitution includes Ale DR'', and Al4Si_3 rectangle (_1) for muscovite, MgFe_1 and (x)rectangle, Al( Na, R2+) _1 in schorl, and Na( Fe2+, Mg) rectangle(_1),A1 (_1) in beryl; 3) according to feldspar Cs content and K -feldspar K/Rb ratio, muscovite Li -B -Cs content and K/Rb ratio, schorl Ge-Pb content, and beryl Li -Cs content and Cs/Na ratio, we suggest the Yalaxiangbo leucogranite-pegmatite evolution is similar to that of typical Be-Nb-Ta mineralized pegmatites and Be mineralized zones in complex pegmatites. |
| WOS关键词 | ELEMENT GRANITIC PEGMATITES ; SOUTH CHINA INSIGHTS ; LA-ICP-MS ; TETHYAN HIMALAYA ; TRACE-ELEMENTS ; EXTREME FRACTIONATION ; BEARING PEGMATITES ; LITHIUM-BEARING ; K-FELDSPAR ; TOURMALINE |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000878167100010 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/107727]  |
| 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 | Zhao JunXing |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 3.Beijing Res Inst Uranium Geol, Natl Key Lab Sci & Technol Remote Sensing Informa, Beijing 100029, Peoples R China 4.China Inst Disaster Prevent, Sanhe 065201, Peoples R China 5.China Met Geol Bur, Inst Mineral Resources Res, Beijing 101300, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao JunXing,He ChangTong,Shi RuiZhe,et al. Mineralogical characteristics of the leucogranite-pegmatite in the Yardoi Gneiss Dome, Himalaya, Tibet: Implication to the rare -metal mineralization.[J]. ACTA PETROLOGICA SINICA,2022,38(7):1981-2002. |
| APA | Zhao JunXing.,He ChangTong.,Shi RuiZhe.,Qin KeZhang.,Yu KeLong.,...&Zhou QiFeng.(2022).Mineralogical characteristics of the leucogranite-pegmatite in the Yardoi Gneiss Dome, Himalaya, Tibet: Implication to the rare -metal mineralization..ACTA PETROLOGICA SINICA,38(7),1981-2002. |
| MLA | Zhao JunXing,et al."Mineralogical characteristics of the leucogranite-pegmatite in the Yardoi Gneiss Dome, Himalaya, Tibet: Implication to the rare -metal mineralization.".ACTA PETROLOGICA SINICA 38.7(2022):1981-2002. |
入库方式： OAI收割
来源：地质与地球物理研究所
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