文献类型：期刊文献

英文题名：Cadmium isotope fractionation in a S-type granite related large magmatic-hydrothermal system

作者：Zhu, Chuanwei Yang, Guangshu Wen, Hanjie Zhang, Yuxu Zhou, Zhengbing Li, Zhanke Du, Shengjiang Zhang, Lei Chen, Xiaocui Luais, Beatrice

第一作者：Zhu, Chuanwei

通信作者：Yang, GS[1]

机构：[1]Changan Univ, Sch Earth Sci & Resources, Xian 710054, Peoples R China;[2]Chinese Acad Sci, State Key Lab Ore Deposit Geochem, Inst Geochem, Guiyang 550081, Peoples R China;[3]Kunming Univ Sci & Technol, Fac Land & Resources Engn, Kunming 650093, Peoples R China;[4]Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China;[5]East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Peoples R China;[6]China Univ Geosci, Sch Earth Resources, Wuhan 430074, Peoples R China;[7]Guizhou Inst Technol, Guiyang 550003, Peoples R China;[8]CNRS, Ctr Rech Petrog & Geochim, UMR 7358, 15 Rue Notre Dame-Pauvres,BP 20, F-54501 Vandoeuvre Les Nancy, France

第一机构：Changan Univ, Sch Earth Sci & Resources, Xian 710054, Peoples R China

通信机构：corresponding author), Kunming Univ Sci & Technol, Fac Land & Resources Engn, Kunming 650093, Peoples R China.

年份：2024

卷号：131

起止页码：363-373

外文期刊名：GONDWANA RESEARCH

收录：;Scopus(收录号：2-s2.0-85190888399);WOS:【SCI-EXPANDED(收录号:WOS:001222405900001)】；

基金：This project was financially supported by the National Natural Science Foundation of China (Grant Nos. 41773012, 42072094, and 41962005), the State Key Program of National Natural Science Foundation of China (Grant No. 41430315), the Science and Technology Foundation of Guizhou Province ([2019]11459), and Guizhou Science and technology innovation talent team project (CXTD[2023]1008).

语种：英文

外文关键词：Skarn deposit; Cd isotopes; I-type granite; S-type granite; Hydrothermal systems

摘要：Granite -associated deposits are one of the important ore types in the Earth's crust and can dominantly be subdivided into S-, Iand A -type granite -related deposits with different mineralization elements and isotopic signatures (e.g., sulphur and boron). The object of this study is to investigate whether Cd isotopic difference exists between Iand S -type granite -related deposits, and to provide new insights on geochemical behavior of Cd in such systems that have not been well constrained. The Dulong deposit in southwest China is a world -class skarn -type polymetallic Zn-Sn-In deposit that is thought to be genetically related to the emplacement of the highly fractionated S -type Laojunshan granite. The extremely negative delta 114/110 Cd values of sulfides (-0.82 %. to -0.42 %.) within the Dulong deposit are all lower than those of sulfides from other Zn-Pb ore deposits globally. In comparison, representative sphalerites from Itype granite -related deposits yield heavier Cd isotopic compositions relative to the samples from the Dulong deposit. The Laojunshan granite samples are enriched in light Cd isotopes and have delta 114/110 Cd values that range from -0.73 %. to -0.40 %., overlapping with the delta 114/110 Cd values of sphalerite within the Dulong deposit and suggesting that the Cd in the deposit was derived from the Laojunshan granite. Similarly, I -type granite -related deposits elsewhere have Cd isotopic compositions that are similar to mafic-intermediate igneous rocks, suggesting little or no Cd isotopic fractionation took place during the magmatic-hydrothermal processes that formed these deposits. These results suggest that geochemical signatures of metal sources are the most likely control on Zn/Cd ratios and delta 114/110 Cd values of sulfides in these deposits, with different mineral deposit types having different Zn/Cd ratios and delta 114/110 Cd values. In summary, Cd isotopes provide a potentially effective tool for discriminating between different types of hydrothermal system and may also be useful in the investigation of granite petrogenesis. (c) 2024 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.