文献类型：期刊文献

英文题名：Source and Evolution of the Ore-Forming Fluids of Carlin-Type Gold Deposit in the Youjiang Basin, South China: Evidences from Solute Data of Fluid Inclusion Extracts

作者：Jin, Xiaoye Yang, Chengfu Liu, Jianzhong Yang, Wu

第一作者：Jin, Xiaoye

通信作者：Jin, XY[1];Jin, XY[2]

机构：[1]China Univ Geosci, Sch Earth Resources, Wuhan 430074, Peoples R China;[2]Minist Nat Resources, Engn Technol Innovat Ctr Mineral Resources Explor, Guiyang 550081, Peoples R China;[3]Guizhou Bur Geol & Mineral Explorat & Dev, Geol Party 105, Guiyang 550018, Peoples R China;[4]Guizhou Inst Technol, Sch Resources & Environm Engn, Guiyang 550003, Peoples R China

第一机构：China Univ Geosci, Sch Earth Resources, Wuhan 430074, Peoples R China

通信机构：corresponding author), China Univ Geosci, Sch Earth Resources, Wuhan 430074, Peoples R China;corresponding author), Minist Nat Resources, Engn Technol Innovat Ctr Mineral Resources Explor, Guiyang 550081, Peoples R China.

年份：2021

卷号：32

期号：1

起止页码：185-194

外文期刊名：JOURNAL OF EARTH SCIENCE

收录：;Scopus(收录号：2-s2.0-85102196567);WOS:【SCI-EXPANDED(收录号:WOS:000625843800014)】；

基金：This study is supported by the Natural Science Foundation of China (Nos. 41802094, U1812402) and the National Basic Research Program (No. 2014CB440906).We are indebted to Dr. Hofstra Albert and Dr. Emsbo Poul from the U.S. Geological Survey (Denver Federal Center) for their help with ion composition analysis. We would like to thank Zepeng Wang, Fa'en Chen, and Guangfu Liu from the 105 Geological Team of Guizhou Province for sampling assistance in field work. The reviewers are also thanked for their critical comments and constructive reviews which significantly improved the manuscript. The final publication is available at Springer via https://doi.org/10.1007/s12583-020-1055-x.

语种：英文

外文关键词：solute data; fluid inclusion; source and evolution of ore-forming fluids; Carlin-type gold deposit; Youjiang Basin

摘要：The source and evolution of ore-forming fluids is important to understand the genesis of Carlin-type gold deposit. Constraints on the source and evolution of ore fluid components by the conventional geochemical methods have long been a challenge due to the very fine-grained nature and complex textures of hydrothermal minerals in these deposits. In this study, we present the crush-leach analyzed solute data of fluid inclusion extracts within quartz, calcite, realgar, and fluorite from the Shuiyindong, Nibao, and Yata gold deposits in the Youjiang Basin, providing new insights into the source and evolution of ore-forming fluids. The results show that the high molar Cl/Br ratios up to 2 508 in fluid inclusion extracts are indicative of a contribution of magmatic hydrothermal fluids. Fluids mixing between basinal and magmatic-hydrothermal fluids are evident on the plots of Cl/Br versus Na/K ratios, showing that ore-stage milky quartz near the magmatic-hydrothermal fluids reflects magma origin of the ore-forming fluids, whereas late ore-stage drusy quartz and realgar near the defined basinal fluids suggest the later input of basinal fluids in late-ore stage. Although the predominately host rocks in Shuiyindong, Nibao and Yata gold deposit are bioclastic limestone, sedimentary tuff, and calcareous siltstone, respectively, the solute data of fluid inclusion extracts records they underwent the similar fluid-rocks reactions between the Na-rich magmatic hydrothermal fluids and the Ca- and Mg-rich host rocks. This study highlights the solute data of fluid inclusion extracts obtained by crush-leach analyses have the potential to fingerprint the source and evolution of ore-forming fluids of the Carlin-type gold deposit.