中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院矿产资源研究重点实验室
Direct evidence for the source of uranium in the Baiyanghe deposit from accessory mineral alteration in the Yangzhuang granite porphyry, Xinjiang Province, northwest China

文献类型：期刊论文

作者Zhang, Long1,2,5; Li, Xiaofeng1,2,4,5; Wang, Guo3; Wang, Mou3
刊名AMERICAN MINERALOGIST
出版日期2020-10-01
卷号105期号:10页码:1556-1571
关键词U-bearing accessory minerals hydrothermal alteration element maps uranium source Yangzhuang granite porphyry Baiyanghe volcanic deposit
ISSN号0003-004X
DOI10.2138/am-2020-7383
英文摘要YCircumstantial evidence for the sources of uranium in ore deposits may be drawn from the study of deposit geochemistry and mineralogy. However, direct evidence supporting uranium leaching from source rocks has rarely been found. This study investigates the source of uranium in the Baiyanghe deposit in the Xiemisitai Mountains, northwest China. The main uranium ore bodies occur as fracturefillings along contact zones between the Yangzhuang granite porphyry and the Devonian volcanic rocks. Zircon, thorite, columbite-(Mn), and bastnasite are the dominant accessory minerals that host uranium in the granite porphyry. In situ columbite-(Mn) LA-ICP-MS U-Pb dating yields a weighted mean Pb-206/U-238 age of 310 +/- 4 Ma, suggesting that the Yangzhuang granite porphyry was emplaced during the Late Carboniferous. Backscattered electron (BSE) images reveal that various degrees of alteration of these same accessory minerals may be observed in the granite porphyry, and the altered domains of these minerals have lower BSE intensities compared to the unaltered domains. Results indicate that the altered domains of zircon grains have lower concentrations of Zr, Si, and U, and higher concentrations of Y, Fe, Ca, and P relative to the unaltered domains, and the altered domains of columbite-(Mn) grains are enriched in Ti and Fe and are depleted in Nb, Ta, Mn, U, and Zr. The altered domains of thorite grains have higher concentrations of Zr, Fe, Ca, Nb, and P, and lower Th and U compared to those of the relict domains. The petrochemical data indicate that the granite porphyry experienced losses in U, Be, F, Ba, Sr, Pb, Zr, Mo, Nb, Ta, and Hf during alteration. These results suggest that the past-magmatic hydrothermal fluids might be responsible for the mobilization of uranium form minerals in the granite porphyry. It is concluded that U-bearing accessory minerals in the granite porphyry were the primary source of uranium, and that post-magmatic hydrothermal processes caused remobilization and significant localized enrichment of the uranium to form high-grade ores as fracture-fillings along its contacts.
WOS关键词NORTHERN WEST JUNGGAR ; U-PB ; TECTONIC IMPLICATIONS ; NW CHINA ; A-TYPE ; HYDROTHERMAL ALTERATION ; PARTITION-COEFFICIENTS ; FRANCEVILLE BASIN ; RADIATION-DAMAGE ; FLUID INCLUSIONS
资助项目Key Research Program of the Institute of Geology and Geophysics, CAS[IGGCAS-201902] ; National Natural Science Foundation of China[41972087] ; China National Nuclear Corporation[LTD1603]
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000573884200007
出版者MINERALOGICAL SOC AMER
资助机构Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Nuclear Corporation ; China National Nuclear Corporation ; China National Nuclear Corporation ; China National Nuclear Corporation ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Nuclear Corporation ; China National Nuclear Corporation ; China National Nuclear Corporation ; China National Nuclear Corporation ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Nuclear Corporation ; China National Nuclear Corporation ; China National Nuclear Corporation ; China National Nuclear Corporation ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Nuclear Corporation ; China National Nuclear Corporation ; China National Nuclear Corporation ; China National Nuclear Corporation
源URL[http://ir.iggcas.ac.cn/handle/132A11/98277]  
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Li, Xiaofeng
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.China Natl Nucl Corp, 216 Geol Survey, Urumqi 830011, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China
5.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Long,Li, Xiaofeng,Wang, Guo,et al. Direct evidence for the source of uranium in the Baiyanghe deposit from accessory mineral alteration in the Yangzhuang granite porphyry, Xinjiang Province, northwest China[J]. AMERICAN MINERALOGIST,2020,105(10):1556-1571.
APA Zhang, Long,Li, Xiaofeng,Wang, Guo,&Wang, Mou.(2020).Direct evidence for the source of uranium in the Baiyanghe deposit from accessory mineral alteration in the Yangzhuang granite porphyry, Xinjiang Province, northwest China.AMERICAN MINERALOGIST,105(10),1556-1571.
MLA Zhang, Long,et al."Direct evidence for the source of uranium in the Baiyanghe deposit from accessory mineral alteration in the Yangzhuang granite porphyry, Xinjiang Province, northwest China".AMERICAN MINERALOGIST 105.10(2020):1556-1571.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。