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Changes in the factors controlling the chlorite composition and their influence on hydrothermal deposit studies: A case study from Hongguleleng Manto-type Cu deposit

文献类型：期刊论文

作者Li, Changhao1,5; Shen, Ping1,5,6; Li, Pei3; Sun, Jinheng2; Feng, Haoxuan1,5; Pan, Hongdi4
刊名JOURNAL OF GEOCHEMICAL EXPLORATION
出版日期2022-12-01
卷号243页码:18
关键词Hydrothermal fluid Host rock Mineral assemblage Formation temperature Fluid evolution
ISSN号0375-6742
DOI10.1016/j.gexplo.2022.107096
英文摘要Chlorite is an important agent for the study of fluid evolution and exploration in hydrothermal deposits. However, the degree of effect of different factors on chlorite composition in hydrothermal deposits is unclear. In this study, the Hongguleleng Cu deposit is selected, where chlorite is extensively developed at different stages, to investigate which factors have a more obvious effect on chlorite compositions in hydrothermal deposits through petrographic and mineralogical studies. This study shows that in weakly altered rocks (with well-preserved rock structures and mineral morphologies), the FeO and MgO contents and Fe/(Fe+Mg) ratio of chlorite are controlled by the host rock, while in veins and strongly altered rocks (with significantly destroyed rock structures and mineral morphologies), they are controlled by the ore-forming fluid. Chlorite coexisting with epidote generally has higher MgO contents and lower Fe/(Fe+Mg) ratios than chlorite without epidote under a similar alteration intensity and formation temperature. Based on petrographic and mineralogical studies, temperature, oxygen fugacity, and sulfur fugacity are decreased during Cu mineralization. The early syn-ore stage formed in relatively low water/rock ratio conditions, continued water-rock reactions led to the development of microfractures, and eventually high water/rock ratio conditions formed during the late syn-ore stage. This study confirms that chlorite compositions are significantly influenced by ore-forming fluids in hydrothermal deposits, laying the foundation for using chlorite to study fluid evolution and exploration; it also emphasizes the influence of coexisting epidote on chlorite compositions and formation temperatures on epidote compositions.
WOS关键词MINERAL CHEMISTRY ; WEST JUNGGAR ; OXYGEN FUGACITY ; MASS-TRANSFER ; MO DEPOSITS ; EPIDOTE ; TEMPERATURE ; SYSTEMS ; CHLORITIZATION ; DISSOLUTION
资助项目National Natural Science Foundation of China[41772089] ; International Partnership Program of International Cooperation Bureau, the Chinese Academy of Sciences[132A11KYSB20190070]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:001060285700003
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; International Partnership Program of International Cooperation Bureau, the Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, the Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, the Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, the 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 ; International Partnership Program of International Cooperation Bureau, the Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, the Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, the Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, the 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 ; International Partnership Program of International Cooperation Bureau, the Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, the Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, the Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, the 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 ; International Partnership Program of International Cooperation Bureau, the Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, the Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, the Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, the Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/110839]  
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.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Hebei Univ Water Resources & Elect Engn, Hebei Key Lab Geotech Engn Safety & Deformat Cont, Cangzhou 061001, Peoples R China
3.China Earthquake Disaster Prevent Ctr, Beijing 100029, Peoples R China
4.Changan Univ, Coll Earth Sci, Xian 710054, Peoples R China
5.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Li, Changhao,Shen, Ping,Li, Pei,et al. Changes in the factors controlling the chlorite composition and their influence on hydrothermal deposit studies: A case study from Hongguleleng Manto-type Cu deposit[J]. JOURNAL OF GEOCHEMICAL EXPLORATION,2022,243:18.
APA Li, Changhao,Shen, Ping,Li, Pei,Sun, Jinheng,Feng, Haoxuan,&Pan, Hongdi.(2022).Changes in the factors controlling the chlorite composition and their influence on hydrothermal deposit studies: A case study from Hongguleleng Manto-type Cu deposit.JOURNAL OF GEOCHEMICAL EXPLORATION,243,18.
MLA Li, Changhao,et al."Changes in the factors controlling the chlorite composition and their influence on hydrothermal deposit studies: A case study from Hongguleleng Manto-type Cu deposit".JOURNAL OF GEOCHEMICAL EXPLORATION 243(2022):18.

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来源：地质与地球物理研究所

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