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
The formation mechanism of reduced porphyry Mo deposits in the West Junggar region, Xinjiang: The Suyunhe example

文献类型：期刊论文

作者Cao, Chong4,5; Shen, Ping1,4; Pan, Hongdi3; Zheng, Liming2; Li, Changhao1,4; Feng, Haoxuan1,4
刊名ORE GEOLOGY REVIEWS
出版日期2020-02-01
卷号117页码:16
关键词The reduced porphyry Mo deposits Oxygen fugacity The mechanism of Mo enrichment The efficiency of metal precipitation
ISSN号0169-1368
DOI10.1016/j.oregeorev.2019.103286
英文摘要Some porphyry Mo deposits with relatively reduced ore assemblages, characterized by high reduced gases (e.g. CH4) and a lack of magnetite and hematite, are generally considered as the reduced porphyry Mo deposits. Nevertheless, the role of oxygen fugacity (fO(2)) in controlling Mo enrichment and precipitation of molybdenite in such reduced porphyry Mo deposits is poorly understood. The Suyunhe reduced porphyry Mo deposit with a Mo metal reserve of 0.57Mt at an average grade of 0.05-0.09%, located in the West Junggar terrane in Xinjiang, is associated with Early Permian granitic rocks, which emplaced into the volcano-sedimentary sequences of the Middle Devonian Barluk Formation. In this study, we report that the variation of magmatic fO(2), the possible mechanism of Mo enrichment, and the contributions of the reduced gases or matter to molybdenite precipitation. Results indicate that the primitive magma is still oxidized with fO(2) > NNO (Ni-NiO oxygen buffer), but it is then reduced due to contamination by the reduced sequences. Furthermore, the decreasing magmatic fO(2) does not significantly prevent the enrichment of Mo metals during magmatic evolution. By contrast, the evolved parental magma, characterized by highly differentiated and fluorite-rich, is responsible for improving Mo concentration of melts. Most of reduced gases are derived from decomposition of organic matter occurring in the reduced volcanic sedimentary rocks of Barluk Formation. More importantly, these reduced gases (e.g. CH4) play a role in molybdenite precipitation, which may effectively improve the efficiency of metal precipitation.
WOS关键词MAGMATIC OXYGEN FUGACITY ; GREAT XINGAN RANGE ; FLUID INCLUSIONS ; CU DEPOSIT ; NW CHINA ; MICROPHENOCRYSTIC APATITE ; COPPER-DEPOSITS ; SO3 CONTENTS ; DABIE SHAN ; NEW-MEXICO
资助项目International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences[132A11KYSB20190070] ; National Natural Science Foundation of China[U1303293] ; National Natural Science Foundation of China[41390442] ; National Natural Science Foundation of China[41272109] ; Key Deployment Project of the Chinese Academy of Sciences[KJZD-EW-TZ-G07]
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000515206900031
出版者ELSEVIER
资助机构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 ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Deployment Project of the Chinese Academy of Sciences ; Key Deployment Project of the Chinese Academy of Sciences ; Key Deployment Project of the Chinese Academy of Sciences ; Key Deployment Project of the 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 ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Deployment Project of the Chinese Academy of Sciences ; Key Deployment Project of the Chinese Academy of Sciences ; Key Deployment Project of the Chinese Academy of Sciences ; Key Deployment Project of the 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 ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Deployment Project of the Chinese Academy of Sciences ; Key Deployment Project of the Chinese Academy of Sciences ; Key Deployment Project of the Chinese Academy of Sciences ; Key Deployment Project of the 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 ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Deployment Project of the Chinese Academy of Sciences ; Key Deployment Project of the Chinese Academy of Sciences ; Key Deployment Project of the Chinese Academy of Sciences ; Key Deployment Project of the Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/95607]  
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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Hebei Bur Geol & Mineral Explorat & Dev, Geol Survey Party 2, Tangshan 063004, Peoples R China
3.Changan Univ, Coll Earth Sci, Xian 710054, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
5.North China Univ Sci & Technol, Coll Min Engn, Tangshan 063210, Peoples R China
推荐引用方式
GB/T 7714		 Cao, Chong,Shen, Ping,Pan, Hongdi,et al. The formation mechanism of reduced porphyry Mo deposits in the West Junggar region, Xinjiang: The Suyunhe example[J]. ORE GEOLOGY REVIEWS,2020,117:16.
APA Cao, Chong,Shen, Ping,Pan, Hongdi,Zheng, Liming,Li, Changhao,&Feng, Haoxuan.(2020).The formation mechanism of reduced porphyry Mo deposits in the West Junggar region, Xinjiang: The Suyunhe example.ORE GEOLOGY REVIEWS,117,16.
MLA Cao, Chong,et al."The formation mechanism of reduced porphyry Mo deposits in the West Junggar region, Xinjiang: The Suyunhe example".ORE GEOLOGY REVIEWS 117(2020):16.

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。