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From granite to highly evolved pegmatite: A case study of the Shangkelan rare-metal granite-pegmatite system (Altai, NW China)

文献类型：期刊论文

作者Luo, Yaoqing1,2; Shen, Ping1,2,3; Cao, Chong1,4; Feng, Haoxuan1,3; Li, Changhao1,3; Bai, Yingxiong1,2; Suo, Qingyu1,2
刊名ORE GEOLOGY REVIEWS
出版日期2023-08-01
卷号159页码:19
ISSN号0169-1368
关键词Granite-pegmatite Muscovite Rayleigh modeling Tungsten mineralization Shangkelan Chinese Altai
DOI10.1016/j.oregeorev.2023.105532
英文摘要The Shangkelan granite-pegmatite is known for its internal zonation and tungsten mineralization in the Chinese Altai. However, the genetic relationship between the granite and pegmatite and the W mineralization mechanism in Shangkelan remains unclear. Here we present monazite U-Pb ages and Nd isotopic composition, and wholerock and muscovite chemical compositions of each zone of the stock, to address these issues. From bottom to top, the stock mainly consists of alkali-feldspar granite (AFG) and granitic pegmatite (GP). Monazite LA-ICP-MS U-Pb dating and Nd isotopic analyses reveal that the AFG and GP have identical ages and similar & epsilon;Nd(t) values, 189 & PLUSMN; 2 Ma and - 0.79-+0.38 and 190 & PLUSMN; 1 Ma and - 0.70-+0.01, respectively. Whole-rock geochemical results show that the stock is highly fractionated and has a differential trend characterized by increasing Rb, Cs, and Tl contents, decreasing W, Ba, and Sr contents, and Zr/Hf ratios from the AFG to GP. Both primary (magmatic) and secondary (hydrothermal) muscovites have been recognized in Shangkelan. From the AFG to GP, element concentrations and ratios of primary muscovite form well-defined differentiation trends marked by gradual increases in Rb, Cs, and Nb, and decreases in W, K/Rb, and Nb/Ta. Based on the gradational contacts in field, identical monazite ages, and similar Nd isotopic compositions, together with the differentiation trends of incompatible elements (such as Rb and Cs) in bulk-rock and primary muscovite and alkali metal Rayleigh fractionation modeling results, we consider that the AFG is parental to GP and they were produced by continuous fractional crystallization of a common magma source. Additionally, for the monazites Nd isotopes, their two-stage Nd model ages of 1034-939 Ma and slightly negative to positive & epsilon;Nd(t) values (- 0.79-+0.38) indicate that the magma sources were mainly derived from the reworking of the Stenian-Tonian basement. Secondary muscovite precipitated from the fluids that exsolved from the parental AFG melt has high contents of F and W. Tungsten may be dissolved as H3WO4F2- in the fluids. The greisenization caused the destabilization of H3WO4F2- and eventually led to the precipitation of wolframite in Shangkelan.
WOS关键词MAGMATIC-HYDROTHERMAL TRANSITION ; CENTRAL-IBERIAN ZONE ; IN-SITU ANALYSIS ; ZIRCON U-PB ; LA-ICP-MS ; TECTONIC EVOLUTION ; PETROGENETIC RELATIONSHIPS ; TUNGSTEN MINERALIZATION ; ACCRETIONARY OROGENESIS ; FRACTIONATED GRANITES
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 ; Mineralogy ; Mining & Mineral Processing
语种英语
出版者ELSEVIER
WOS记录号WOS:001039070900001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; 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 ; 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 ; Regional Collaborative Innovation Project, Xinjiang ; Regional Collaborative Innovation Project, Xinjiang ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; 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 ; 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 ; Regional Collaborative Innovation Project, Xinjiang ; Regional Collaborative Innovation Project, Xinjiang ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; 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 ; 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 ; Regional Collaborative Innovation Project, Xinjiang ; Regional Collaborative Innovation Project, Xinjiang ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; 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 ; 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 ; Regional Collaborative Innovation Project, Xinjiang ; Regional Collaborative Innovation Project, Xinjiang
源URL[http://ir.iggcas.ac.cn/handle/132A11/111349]  
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, 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.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
4.North China Univ Sci & Technol, Coll Min Engn, Tangshan 063210, Hebei, Peoples R China
推荐引用方式
GB/T 7714		 Luo, Yaoqing,Shen, Ping,Cao, Chong,et al. From granite to highly evolved pegmatite: A case study of the Shangkelan rare-metal granite-pegmatite system (Altai, NW China)[J]. ORE GEOLOGY REVIEWS,2023,159:19.
APA Luo, Yaoqing.,Shen, Ping.,Cao, Chong.,Feng, Haoxuan.,Li, Changhao.,...&Suo, Qingyu.(2023).From granite to highly evolved pegmatite: A case study of the Shangkelan rare-metal granite-pegmatite system (Altai, NW China).ORE GEOLOGY REVIEWS,159,19.
MLA Luo, Yaoqing,et al."From granite to highly evolved pegmatite: A case study of the Shangkelan rare-metal granite-pegmatite system (Altai, NW China)".ORE GEOLOGY REVIEWS 159(2023):19.

入库方式： OAI收割

来源：地质与地球物理研究所

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