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Mechanisms for invisible gold enrichment in the Liaodong Peninsula, NE China: In situ evidence from the Xiaotongjiapuzi deposit

文献类型：期刊论文

作者Sun, Guotao2,4,5; Zeng, Qingdong1,4; Zhou, Lingli3,9; Hollis, Steven Philip8; Zhou, Jia-Xi2,7; Chen, Kaiyun6
刊名GONDWANA RESEARCH
出版日期2022-03-01
卷号103页码:276-296
ISSN号1342-937X
关键词Invisible gold enrichment Pyrite replacement LA-ICP-MS in situ trace element SIMS in situ sulfur isotope Liaodong Peninsula
DOI10.1016/j.gr.2021.10.008
英文摘要Mechanisms for invisible gold enrichment hosted within Paleoproterozoic Fe-rich metamorphic rocks (marble, biotite schist, and quartz-feldspar schist) in the Liaodong Peninsula, NE China are still unclear. In this study, we choose the Xiaotongjiapuzi deposit as a case study, and present a detailed ore deposit geology and dataset of in situ chemical compositions of Fe-sulfides to address this issue. Fe-sulfides have the following paragenesis: metamorphic pyrite (Py0), first-ore stage pyrite (Py1, Py2), and a second-ore stage comprising arsenopyrite (Apy1, Apy2) and two phases of marcasite (Mas(a-b)). Early metamorphic pyrite (Py0) has relatively low concentrations of Au (< 0.06-0.17 ppm). The significantly higher concentrations of Au in Py2 (1.55-423 ppm) and Apy2 (105-341 ppm) than those of Py1 (0.068-0.123 ppm) and Apy1 (2.90-7.70 ppm) suggest that gold prefers to incorporate into non-stoichiometric hydrothermal Fe-sulfides. Substitution of As1- and As3+ in Fe-sulfides may account for the coupled geochemical behavior between As and Au, Ag, Pb, Zn, Cu. Replacement led to fractured Py1 becoming enriched in Au, As, Ag, Cu, Sb and Pb, and Py0 being replaced by Au, As, Ag, Cu, Sb and Pb-rich marcasite. In situ sulfur analysis shows that Py0 has highly positive delta S-34 values (+13.62 to +18.55%), suggesting it is associated with metasediments (+14 to +20%). Py1, Py2, Apy1, and Apy2 are isotopically homogeneous and have delta S-34 values of +3.67 to +7.50%, indicative of a magmatic phase. Both generations of marcasite, which replaced Py0, have yielded mixed sulfur isotopic signatures (delta S-34 values of +8.66 to +13.18%). The gold mineralization in the Xiaotongjiapuzi gold deposit was the result of magmatic-hydrothermal processes. We propose two key factors: i) abundant defects in non-stoichiometric Fe-sulfides, and ii) replacement processes can cause invisible gold enrichment in Fe-sulfides in the Liaodong Peninsula. This provides a new perspective for invisible gold mineralization in other similar regions worldwide. (C) 2021 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
WOS关键词ZIRCON U-PB ; PALEOPROTEROZOIC CRUSTAL EVOLUTION ; METAMORPHIC CORE COMPLEX ; HF ISOTOPIC COMPOSITIONS ; CARLIN-TYPE ; LIAONING PROVINCE ; ARSENIAN PYRITE ; EASTERN BLOCK ; EXTENSIONAL TECTONICS ; SULFUR ISOTOPES
资助项目National Key R & D Program of China[2016YFC0600108] ; National Natural Science Foundation of China[41802102] ; State Key Laboratory of Lithospheric Evolution[S201605] ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; Research Startup Project[YJRC4201804]
WOS研究方向Geology
语种英语
出版者ELSEVIER
WOS记录号WOS:000804188800003
资助机构National Key R & D Program of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; Research Startup Project ; Research Startup Project ; Research Startup Project ; Research Startup Project ; National Key R & D Program of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; Research Startup Project ; Research Startup Project ; Research Startup Project ; Research Startup Project ; National Key R & D Program of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; Research Startup Project ; Research Startup Project ; Research Startup Project ; Research Startup Project ; National Key R & D Program of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Key R & D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; SEM Labora-tory, Analytical Laboratory of BRIUG (Beijing) ; Research Startup Project ; Research Startup Project ; Research Startup Project ; Research Startup Project
源URL[http://ir.iggcas.ac.cn/handle/132A11/106029]  
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Zhou, Jia-Xi
作者单位1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
2.Yunnan Univ, Sch Earth Sci, Kunming 650500, Peoples R China
3.Univ Coll Dublin, Sch Earth Sci, Dublin 4, Ireland
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
5.Guizhou Univ, Coll Resource & Environm Engn, Guiyang 550012, Peoples R China
6.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xi'an 710069, Peoples R China
7.Univ Yunnan Prov, Key Lab Crit Minerals Metallogeny, Kunming 650500, Peoples R China
8.Univ Edinburgh, Grant Inst, Sch Geosci, Edinburgh EH9 3JW, Scotland
9.Univ Coll Dublin, ICRAG, Dublin 4, Ireland
推荐引用方式
GB/T 7714		 Sun, Guotao,Zeng, Qingdong,Zhou, Lingli,et al. Mechanisms for invisible gold enrichment in the Liaodong Peninsula, NE China: In situ evidence from the Xiaotongjiapuzi deposit[J]. GONDWANA RESEARCH,2022,103:276-296.
APA Sun, Guotao,Zeng, Qingdong,Zhou, Lingli,Hollis, Steven Philip,Zhou, Jia-Xi,&Chen, Kaiyun.(2022).Mechanisms for invisible gold enrichment in the Liaodong Peninsula, NE China: In situ evidence from the Xiaotongjiapuzi deposit.GONDWANA RESEARCH,103,276-296.
MLA Sun, Guotao,et al."Mechanisms for invisible gold enrichment in the Liaodong Peninsula, NE China: In situ evidence from the Xiaotongjiapuzi deposit".GONDWANA RESEARCH 103(2022):276-296.

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来源：地质与地球物理研究所

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