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Deep ore-forming fluid characteristics of the Jiaodong gold province: Evidence from the Qianchen gold deposit in the Jiaojia gold belt

文献类型：期刊论文

作者Wu, Jinjian1,5,6; Zeng, Qingdong1,5,6; Santosh, M.2,3; Fan, Hongrui1,5,6; Bai, Rui4; Li, Xinghui1,5; Zhang, Zheming1,5,6; Zhang, Yongwen1,5,6; Huang, Liangliang1,5
刊名ORE GEOLOGY REVIEWS
出版日期2022-06-01
卷号145页码:21
关键词Jiaodong gold province Fluid inclusion Trace element In situ S isotope Primary halo geochemistry
ISSN号0169-1368
DOI10.1016/j.oregeorev.2022.104911
英文摘要The Jiaodong gold province hosts world-class gold deposits with giant resources of >5000 t, where the JiaojiaXincheng fault belt and the Sanshandao-Cangshang fault belt occupy more than two-thirds of the gold deposits. Recent developments of exploration have advanced in tracking deep mineralization. The nature of the oreforming fluid, source, and the extreme enrichment mechanism of the gold in this region remain debated. Here, we investigate the deep ore body of the Qianchen gold deposit at the southern part of the Jiaojia gold belt based on mineralogy, fluid inclusion, elemental and isotopic composition of pyrite, and the primary halo geochemistry. Natural gold is the important form of Au in this deposit with a relatively large (up to 200 mu m) grain size, suggesting the prospect of mineralization at deeper domains. The accompanying PGE minerals (Hexaferrum) hint at contributions from mantle material. The ore-forming fluids of the Qianchen gold deposit are characterized by medium-low temperatures and salinities and have a general H2O-NaCl-CO2 +/- CH4 composition, which indicates that the Jiaodong gold province has a unified ore-forming fluid system from shallow to deep. However, the trace elements and S isotopes of pyrite at different elevations show slight differences, suggesting the composition and properties of the fluid changed during the process of ascending, affected by oreforming conditions such as temperature, pressure, and oxygen fugacity. Furthermore, the evidence of a decrease of salinity with depth and temperature and fluid immiscibility indicates that fluids from different sources continuously mixed during the upward migration of fluid, with the mineralization triggered possibly by phase separation. The primary halo model suggests promising prospecting potential. We formulate a comprehensive metallogenic model for the mineralization process in the Jiaodong gold province. The Au-bearing hydrous magma derived from the partial melting of the metasomatized SCLM, underwent further magmatichydrothermal differentiation and fluid exsolution, and thus the Au was enriched and partitioned into exsolved fluids that evolved to auriferous fluids. During the upward migration of ore-forming fluids (magmatic-hydrothermal), many factors affected mineralization, mainly including fluid-rock interaction and mixing of the metamorphic-hydrothermal and meteoric fluids. The fluid activities, multiple sources of Au in the mantle and ancient basement, together with the large fault structures resulted in the formation of the giant Jiaodong gold province.
WOS关键词NORTH CHINA CRATON ; FISCHER-TROPSCH SYNTHESIS ; ALKALINE IGNEOUS ROCKS ; LA-ICP-MS ; CARLIN-TYPE ; SANSHANDAO DEPOSIT ; CRUST IMPLICATIONS ; SECULAR CHANGES ; TRACE-ELEMENTS ; COPPER-DEPOSIT
资助项目Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program[HYHAYT2019-227]
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000799961500001
出版者ELSEVIER
资助机构Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program ; Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program ; Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program ; Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program ; Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program ; Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program ; Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program ; Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program ; Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program ; Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program ; Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program ; Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program ; Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program ; Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program ; Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program ; Deep Fluid Mineralization and Prediction of Ultra-deep Mineralization in Jiaojia Metallogenic Belt Program
源URL[http://ir.iggcas.ac.cn/handle/132A11/106033]  
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Zeng, Qingdong
作者单位1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
2.China Univ Geosci Beijing, Sch Earth Sci & Resources, Beijing 100083, Peoples R China
3.Univ Adelaide, Dept Earth Sci, Adelaide, SA 5005, Australia
4.Shandong Gold Geol & Mineral Explorat Co Ltd, Laizhou 261400, Shandong, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
6.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Jinjian,Zeng, Qingdong,Santosh, M.,et al. Deep ore-forming fluid characteristics of the Jiaodong gold province: Evidence from the Qianchen gold deposit in the Jiaojia gold belt[J]. ORE GEOLOGY REVIEWS,2022,145:21.
APA Wu, Jinjian.,Zeng, Qingdong.,Santosh, M..,Fan, Hongrui.,Bai, Rui.,...&Huang, Liangliang.(2022).Deep ore-forming fluid characteristics of the Jiaodong gold province: Evidence from the Qianchen gold deposit in the Jiaojia gold belt.ORE GEOLOGY REVIEWS,145,21.
MLA Wu, Jinjian,et al."Deep ore-forming fluid characteristics of the Jiaodong gold province: Evidence from the Qianchen gold deposit in the Jiaojia gold belt".ORE GEOLOGY REVIEWS 145(2022):21.

入库方式： OAI收割

来源：地质与地球物理研究所

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