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Petrology, mineralogy, and geochemistry of the Carboniferous Katbasu Au-Cu deposit, western Tianshan, Northwest China: Implications for petrogenesis, ore genesis, and tectonic setting

文献类型：期刊论文

作者Feng, Wanyi2; Zheng, Jiahao2; Shen, Ping1
刊名ORE GEOLOGY REVIEWS
出版日期2023-10-01
卷号161页码:13
ISSN号0169-1368
关键词Petrogenesis Ore genesis Katbasu Au-Cu deposit Western Tianshan
DOI10.1016/j.oregeorev.2023.105659
英文摘要The Katbasu Au-Cu deposit in the Chinese western Tianshan is hosted in the ca. 355 Ma granite intrusion. This paper reports whole-rock geochemical and zircon Hf-O isotopic data for the granites and the mafic enclaves as well as in situ S isotopic data for the sulfides from the Katbasu Au-Cu deposit. Our results provide constraints on the petrogenesis and ore genesis of the Katbasu Au-Cu deposit. Geochemical characteristics suggest that the Katbasu granites are metaluminous rocks, exhibiting mineral assemblages and geochemical characteristics of Itype granites. The granites have positive zircon epsilon Hf(t) values of 7.1-10.2 and zircon 818O values of 6.2-7.2%o, suggesting a juvenile crustal origin. Mixing processes between felsic and mafic magmas were involved in their generation. The mafic enclaves are enriched in LILEs and depleted in HFSEs, and have zircon epsilon Hf(t) values of 7.5-15.8 and zircon 818O values of 5.4-6.9%o, suggesting that they were derived from a subduction-modified mantle and underwent subsequent crustal contamination and/or magma mixing processes. In situ S isotopic analyses show that pyrite grains from the pre-ore stage and post-ore stage have positive 834S values of 7.0-8.5%o and 8.2-9.0%o, respectively. Pyrite and chalcopyrite grains from an early magmatic-hydrothermal Cu-Au mineralization stage show 834S values of 8.8-11.1%o, and pyrite grains from the main orogenic Au mineralization stage have positive 834S values of 5.9-8.4%o. The heavy S isotope characteristics of magmatic-hydrothermal CuAu mineralization indicate that the magma source might be metasomatized by subduction materials, whereas the heavy S isotope characteristics of the late orogenic Au mineralization suggest that the ore-forming materials mainly originated from the metamorphic devolatilization of the source rocks. The ca.352-349 Ma early magmatic-hydrothermal Cu-Au mineralization in the Katbasu deposit formed in a subduction tectonic setting, whereas the ca. 323-311 Ma late orogenic Au mineralization formed in an orogenic environment during the final stage of subduction.
WOS关键词LACHLAN FOLD BELT ; NW CHINA ; GOLD DEPOSIT ; U-PB ; CALC-ALKALINE ; IRON MINERALIZATION ; EASTERN TIANSHAN ; VOLCANIC-ROCKS ; GRANITOIDS ; GEOCHRONOLOGY
资助项目National Natural Science Foundation of China[42002052] ; China Postdoctoral Science Foundation[2020M671881]
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
语种英语
出版者ELSEVIER
WOS记录号WOS:001076157900001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation
源URL[http://ir.iggcas.ac.cn/handle/132A11/110820]  
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Zheng, Jiahao
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Fuzhou Univ, Zijin Sch Geol & Min, Fuzhou 350108, Peoples R China
推荐引用方式
GB/T 7714		 Feng, Wanyi,Zheng, Jiahao,Shen, Ping. Petrology, mineralogy, and geochemistry of the Carboniferous Katbasu Au-Cu deposit, western Tianshan, Northwest China: Implications for petrogenesis, ore genesis, and tectonic setting[J]. ORE GEOLOGY REVIEWS,2023,161:13.
APA Feng, Wanyi,Zheng, Jiahao,&Shen, Ping.(2023).Petrology, mineralogy, and geochemistry of the Carboniferous Katbasu Au-Cu deposit, western Tianshan, Northwest China: Implications for petrogenesis, ore genesis, and tectonic setting.ORE GEOLOGY REVIEWS,161,13.
MLA Feng, Wanyi,et al."Petrology, mineralogy, and geochemistry of the Carboniferous Katbasu Au-Cu deposit, western Tianshan, Northwest China: Implications for petrogenesis, ore genesis, and tectonic setting".ORE GEOLOGY REVIEWS 161(2023):13.

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来源：地质与地球物理研究所

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