| 变质改造型关键金属矿——富集Li-Rb-Cs-Tl-Ga的云母片岩 |
| |
| 引用本文： | 高利娥,曾令森,赵令浩,严立龙,李广旭,邸英龙,徐倩,王亚莹,王海涛,田怡红.变质改造型关键金属矿——富集Li-Rb-Cs-Tl-Ga的云母片岩[J].岩石矿物学杂志,2023,42(1):29-46. |
| |
| 作者姓名： | 高利娥 曾令森 赵令浩 严立龙 李广旭 邸英龙 徐倩 王亚莹 王海涛 田怡红 |
| |
| 作者单位： | 中国地质科学院 地质研究所, 北京 100037;中国地质科学院 国家地质实验测试中心, 北京 100037;天津师范大学 地理与环境科学学院, 天津 300387 |
| |
| 基金项目： | 国家重点研发计划(2021YFC2901901);国家自然科学基金项目(41873023,92055202,42002071);第二次青藏高原科学考察项目(2019QZKK0702);中国地质调查局地质调查项目(DD20221817,DD20221630) |
| |
| 摘 要： | 关键金属矿产是国际上最近提出的资源概念，对战略性新兴产业的发展至关重要，但认知程度较低。洛扎岩浆-变质杂岩体位于喜马拉雅带东部，侵位于藏南拆离系内。在岩体东北侧，云母片岩被含电气石淡色花岗岩捕虏。云母片岩主要由金云母、绿泥石和少量黑云母组成。从全岩地球化学成分来看，云母片岩具有含量较高的Al2O3(13.38%～14.32%)、K2O(6.09%～9.66%)、FeO*(27.11%～30.09%)、MgO(15.25%～17.21%)、TiO2(0.09%～0.26%),富集关键金属Li(650×10-6～1 031×10-6)、Rb(1 649×10-6～2 773×10-6)、Cs(98×10-6～229×10-6)、Tl(5.7×10-6～12.1×10-6)、Ga(121×10-6
|
| 关 键 词： | 关键金属元素 Li-Rb-Cs-Tl-Ga 金云母 变质作用 沉积岩 喜马拉雅造山带 |
| 收稿时间： | 2022/9/16 0:00:00 |
| 修稿时间： | 2022/11/22 0:00:00 |
Metamorphic transformation type critical metal ore: Li-Rb-Cs-Tl-Ga enriched mica schist |
| |
| GAO Li-e,ZENG Ling-sen,ZHAO Ling-hao,YAN Li-long,LI Guang-xu,DI Ying-long,XU Qian,WANG Ya-ying,WANG Hai-tao,TIAN Yi-hong.Metamorphic transformation type critical metal ore: Li-Rb-Cs-Tl-Ga enriched mica schist[J].Acta Petrologica Et Mineralogica,2023,42(1):29-46. |
| |
| Authors: | GAO Li-e ZENG Ling-sen ZHAO Ling-hao YAN Li-long LI Guang-xu DI Ying-long XU Qian WANG Ya-ying WANG Hai-tao TIAN Yi-hong |
| |
| Institution: | Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;National Research Center for Geoanalysis, Chinese Academy of Geological Sciences, Beijing 100037, China;School of Geographic and Environmental Sciences, Tianjin Normal University, Tianjin 300387, China |
| |
| Abstract: | Critical metal minerals are recently proposed resource concept worldwide and are important to the deve-lopment of strategic industries, but the level of awareness is still low. The Luozha pluton is located in the east of the Himalayan belt and invaded the Southern Tibet detachment system. On the northeast of this pluton, mica schist is captured by the tourmaline-bearing leucogranite. The mica schist is mainly composed of phlogopite, chlorite and minor biotite. Whole-rock element geochemical data indicate that the mica schist contains higher Al2O3 (13.38%~14.32%), K2O (6.09%~9.66%), FeO* (27.11%~30.09%), MgO (15.25%~17.21%), TiO2 (0.09%~0.26%), and is enriched in Li (650×10-6~1 031×10-6), Rb (1 649×10-6~2 773×10-6), Cs (98×10-6~229×10-6), Tl (5.7×10-6~12.1×10-6), Ga (121×10-6~148×10-6). The geochemical data of phlogopite show that similar to the whole rock, phlogopite also is enriched in Li-Rb-Cs-Ga, and these critical metal elements are incorporated into phlogopite by replacement of K. Chronological data indicate that zircon records widespread detrital age and Cenozoic metamorphic events. Therefore, it can be concluded that the original rock of mica schist in the Luoza area is sedimentary rock, which was captured during the invasion of leucogranite and underwent low-level metamorphism. The phlogopite mineralization reported in this paper is a new type of lithium ore genesis: metamorphic transformation type. The discovery of the metals thallium and gallium in the Himalayan orogenic belt suggests that critical metals also have mineralization potential in addition to rare metals. Our data suggest that the Himalayan belt is another important target area for the exploration of critical metals. This paper provides new ideas for establishing metallogenic models of critical metals in the Himalayan orogenic belt. It is necessary to strengthen the exploration of critical metals in sedimentary or metasedimentary rocks in the Himalayan orogenic belt and the other orogenic belts in the future. |
| |
| Keywords: | critical metal Li-Rb-Cs-Tl-Ga phlogopite metamorphism sedimentary rock Himalaya orogen belt |
|
| 点击此处可从《岩石矿物学杂志》浏览原始摘要信息 |
| 点击此处可从《岩石矿物学杂志》下载免费的PDF全文 |
|
