IGGCAS OpenIR  > 矿产资源研究院重点实验室
The formation mechanism of reduced porphyry Mo deposits in the West Junggar region, Xinjiang: The Suyunhe example
Cao, Chong1,2; Shen, Ping2,3; Pan, Hongdi5; Zheng, Liming4; Li, Changhao2,3; Feng, Haoxuan2,3
2020-02-01
Source PublicationORE GEOLOGY REVIEWS
ISSN0169-1368
Volume117Pages:16
AbstractSome 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.
KeywordThe reduced porphyry Mo deposits Oxygen fugacity The mechanism of Mo enrichment The efficiency of metal precipitation
DOI10.1016/j.oregeorev.2019.103286
Funding OrganizationInternational 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
WOS KeywordMAGMATIC OXYGEN FUGACITY ; GREAT XINGAN RANGE ; FLUID INCLUSIONS ; CU DEPOSIT ; NW CHINA ; MICROPHENOCRYSTIC APATITE ; COPPER-DEPOSITS ; SO3 CONTENTS ; DABIE SHAN ; NEW-MEXICO
Language英语
Funding ProjectInternational 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]
Funding OrganizationInternational 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
WOS Research AreaGeology ; Mineralogy ; Mining & Mineral Processing
WOS SubjectGeology ; Mineralogy ; Mining & Mineral Processing
WOS IDWOS:000515206900031
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95607
Collection矿产资源研究院重点实验室
Corresponding AuthorShen, Ping
Affiliation1.North China Univ Sci & Technol, Coll Min Engn, Tangshan 063210, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Hebei Bur Geol & Mineral Explorat & Dev, Geol Survey Party 2, Tangshan 063004, Peoples R China
5.Changan Univ, Coll Earth Sci, Xian 710054, Peoples R China
First Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Recommended Citation
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.
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