Geochronology, source features and the characteristics of fractional crystallization in pegmatite at the Qongjiagang giant pegmatite -type lithium deposit, Himalaya, Tibet
文献类型：期刊论文
| 作者 | Zhao JunXing2; He ChangTong1,2; Qin KeZhang1,2; Shi RuiZhe1,2; Liu XiaoChi3 ; Hu FangYang2; Yu KeLong1,2; Sun ZhengHao1,2
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| 刊名 | ACTA PETROLOGICA SINICA
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| 出版日期 | 2021-11-01 |
| 卷号 | 37期号:11页码:3325-3347 |
| 关键词 | Qongjiagang lithium deposit Internal zonation patterns of pegmatite U-Pb dating of monazite and columbite group minerals Source features Regional mineralization in the Himalayan leucogranite belt |
| ISSN号 | 1000-0569 |
| DOI | 10.18654/1000-0569/2021.11.06 |
| 英文摘要 | Recently, the Himalayan leucogranite belt has been recognized as the potential prospecting area of the rare -metal mineralization related to the newly proposed petrogenesis of highly fractionated granite. Currently, the exploration aim is mainly targeting at the beryllium -niobium -tantalum ( tin -tungsten) assemblage, such as Cuonadong deposit. Qin et al. ( 2021a) reported a discovery of the Qongjiagang giant lithium pegmatite deposit in Himalaya, Tibet, raising more attention to the spodumene pegmatites in the Higher Himalaya Belt. The present work reveals the geological features, age of ore formation and source features of mineralizing pegmatites at Qongjiagang. Our result shows the main ore minerals at Qongjiagang are dominated by spodumene and columbite group minerals, with minor amounts of cassiterite and beryl. The pegmatite zones hosted by a majority of spodumene minerals at Qongjiagang are identified as a massive microcline + spodumene zone and a layered aplite zone. The K/Rb ratios of different rocks in the internal zonation patterns from rim to core remain to be similar, and the lithium concentrations rise from 100 x 10 6 at the saccharoidal albite zone, through 1000 x 10 -6 at the layered aplite zone, to more than 3000 x 10 -6 at the massive microcline + spodumene zone; however, the cesium contents drop, respectively. U-Pb dating results upon monazite and columbite group minerals show the Qongjiagang Li -pegmatite was formed in the initial duration of the Neo-Himalayan stage (25 24Ma), similar to most dating results at the Higher Himalayan leucogranite. Mineral chemistry and monazite Nd isotopic compositions suggest Qongjiagang Li -pegmatite was crystallized in a highly evolved granitic pegmatite melt, with source features consistent with the Higher Himalayan Crystalline. Our research at the geological features, formation age and source characteristics at Qongjiagang lithium pegmatite deposit gives more implication of ore -forming mechanism and exploration targeting for finding large granitic pegmatitic lithium mines in the Higher Himalaya region of China. |
| WOS关键词 | GRANITIC PEGMATITES ; COLUMBITE-TANTALITE ; TRACE-ELEMENTS ; CONSTRAINTS ; MINERALIZATION ; SOLUBILITY ; MINERALOGY ; ORIGIN ; MAINE ; ROCKS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000747486100006 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/104920]  |
| 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 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Zhao JunXing |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao JunXing,He ChangTong,Qin KeZhang,et al. Geochronology, source features and the characteristics of fractional crystallization in pegmatite at the Qongjiagang giant pegmatite -type lithium deposit, Himalaya, Tibet[J]. ACTA PETROLOGICA SINICA,2021,37(11):3325-3347. |
| APA | Zhao JunXing.,He ChangTong.,Qin KeZhang.,Shi RuiZhe.,Liu XiaoChi.,...&Sun ZhengHao.(2021).Geochronology, source features and the characteristics of fractional crystallization in pegmatite at the Qongjiagang giant pegmatite -type lithium deposit, Himalaya, Tibet.ACTA PETROLOGICA SINICA,37(11),3325-3347. |
| MLA | Zhao JunXing,et al."Geochronology, source features and the characteristics of fractional crystallization in pegmatite at the Qongjiagang giant pegmatite -type lithium deposit, Himalaya, Tibet".ACTA PETROLOGICA SINICA 37.11(2021):3325-3347. |
入库方式： OAI收割
来源：地质与地球物理研究所
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