Jurassic Au-Ag mineralization of the Linjiasandaogou deposit in the Liaodong Peninsula, northeast China: Evidence from apatite U-Pb dating and the in situ geochemistry of sulfides
文献类型：期刊论文
| 作者 | Sun, Guotao1,2,7; Zeng, Qingdong3,4,5; Zhou, Jia-Xi6 |
| 刊名 | JOURNAL OF GEOCHEMICAL EXPLORATION
 |
| 出版日期 | 2023-08-01 |
| 卷号 | 251页码:21 |
| ISSN号 | 0375-6742 |
| 关键词 | Invisible gold Apatite U-Pb dating In situ trace element In situ S isotope Linjiasandaogou deposit Northeast China |
| DOI | 10.1016/j.gexplo.2023.107242 |
| 英文摘要 | The Liaodong Peninsula in northeast China hosts visible and invisible Au-dominated mineralization. Compared with visible Au, age and mechanisms of invisible Au-dominated mineralization are still unclear. The Linjia-sandaogou deposit in the Liaodong Peninsula comprises disseminated and veinlet ores hosted in Paleoproterozoic schist and Triassic granite porphyry and lamprophyres. Three mineralization stages were identified in this de-posit: the early pyrite (Py1), arsenian pyrite (Py2)-arsenopyrite-sphalerite (Sp1)-quartz-apatite, and frei-bergite-sphalerite (Sp2)-galena-quartz stages. Gold mineralization is mainly in invisible forms and was deposited during the second stage, whereas Ag was deposited during the third stage. Uranium-Pb dating of hydrothermal apatite from the second stage indicates that Au mineralization occurred at ca. 184 Ma, when the Yaojiagou granite was emplaced. In situ S isotope analysis shows that sulfides which formed during the mineralization stages have a narrow range of delta 34SV-CDT values (4.80 parts per thousand-8.53 parts per thousand) that are typical of a magma-tic-hydrothermal system. Py2 has higher As, Au, and Ag contents of 15,100-95,576, 15.4-183, and 20.8-129 ppm, as compared with Py1 (As <0.9-11,050 ppm, Au <0.03-11.1 ppm, and Ag <0.05-48.5 ppm). The negative correlations between As-S and Au-Fe in pyrite are indicative of As substitution for S and Au substitute for Fe in the pyrite. The pyrite and sphalerite trace element compositions indicate that the formation temperatures of the three stages were >250 degrees C, 154-252 degrees C, and 167-197 degrees C, respectively. The evolution of the hydrothermal system indicates that the deposition of Au is due to cooling and fluid-rock interaction, whereas the precipitation of Ag results from an increase in the sulfidation state. Results suggest the invisible Au-dominated mineralization in the Linjiasandaogou deposit was associated with the Early Jurassic intrusion. This study supplements the ore-forming epoch framework of the Qingchengzi ore field and improves the understanding of the Au-Ag mineral-ization in this area. |
| WOS关键词 | PALEOPROTEROZOIC CRUSTAL EVOLUTION ; WULONG GOLD DEPOSIT ; EASTERN BLOCK ; MINOR ELEMENTS ; ZIRCON GEOCHRONOLOGY ; ISOTOPE MEASUREMENT ; LIAONING PROVINCE ; FLUID INCLUSIONS ; SULFUR ISOTOPES ; METAL DEPOSITS |
| 资助项目 | National Natural Science Foundation of China[42263010] ; National Natural Science Foundation of China[42202086] ; Guizhou Provin- cial Science and Technology Projects[Qiankehejichu-ZK [2023] Yiban064] ; Natural Science Special (special post) scientific research fund project of Guizhou University[2022-24] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001001979400001 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guizhou Provin- cial Science and Technology Projects ; Guizhou Provin- cial Science and Technology Projects ; Natural Science Special (special post) scientific research fund project of Guizhou University ; Natural Science Special (special post) scientific research fund project of Guizhou University ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guizhou Provin- cial Science and Technology Projects ; Guizhou Provin- cial Science and Technology Projects ; Natural Science Special (special post) scientific research fund project of Guizhou University ; Natural Science Special (special post) scientific research fund project of Guizhou University ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guizhou Provin- cial Science and Technology Projects ; Guizhou Provin- cial Science and Technology Projects ; Natural Science Special (special post) scientific research fund project of Guizhou University ; Natural Science Special (special post) scientific research fund project of Guizhou University ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guizhou Provin- cial Science and Technology Projects ; Guizhou Provin- cial Science and Technology Projects ; Natural Science Special (special post) scientific research fund project of Guizhou University ; Natural Science Special (special post) scientific research fund project of Guizhou University |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/111003]  |
| 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 | Sun, Guotao |
| 作者单位 | 1.Guizhou Univ, State Key Lab Publ Big Data, Guiyang 550025, Peoples R China 2.Minist Educ, Key Lab Karst Georesources & Environm, Guiyang 550025, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 4.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Yunnan Univ, Sch Earth Sci, Kunming 650500, Peoples R China 7.Guizhou Univ, Coll Resources & Environm Engn, Guiyang 550025, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Guotao,Zeng, Qingdong,Zhou, Jia-Xi. Jurassic Au-Ag mineralization of the Linjiasandaogou deposit in the Liaodong Peninsula, northeast China: Evidence from apatite U-Pb dating and the in situ geochemistry of sulfides[J]. JOURNAL OF GEOCHEMICAL EXPLORATION,2023,251:21. |
| APA | Sun, Guotao,Zeng, Qingdong,&Zhou, Jia-Xi.(2023).Jurassic Au-Ag mineralization of the Linjiasandaogou deposit in the Liaodong Peninsula, northeast China: Evidence from apatite U-Pb dating and the in situ geochemistry of sulfides.JOURNAL OF GEOCHEMICAL EXPLORATION,251,21. |
| MLA | Sun, Guotao,et al."Jurassic Au-Ag mineralization of the Linjiasandaogou deposit in the Liaodong Peninsula, northeast China: Evidence from apatite U-Pb dating and the in situ geochemistry of sulfides".JOURNAL OF GEOCHEMICAL EXPLORATION 251(2023):21. |
入库方式： OAI收割
来源：地质与地球物理研究所
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