Precise discrimination on the mineralization processes of the Jinding Pb-Zn deposit, Lanping Basin, western Yunnan, China: Evidence from in situ trace elements and S-Pb isotopes of sulfides
文献类型：期刊论文
| 作者 | Li XiangCai1,2,7; Wang JingBin2,7; Zhu XinYou7; Li ChengHou6; Wu JinJian3,4,5; Wang YongBin8; Shi Min1; Guo YuHang1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2023-08-01 |
| 卷号 | 39期号:8页码:2511-2532 |
| ISSN号 | 1000-0569 |
| 关键词 | Jinding Pb-Zn deposit LA-(MC)ICP-MS Trace element S-Pb isotopes MVT type deposit |
| DOI | 10.18654/1000-0569/2023.08.15 |
| 英文摘要 | The Jinding Pb-Zn deposit is located in the Meso-Cenozoic Lanping Basin, SW China, which is the second largest Pb-Zn deposits in Asia. It has been studied by many researchers because of its huge reserves and complex geological metallogenic history, however, there are still highly controversial aspects regarding its ore genesis and precise mineralization processes. In this study, we carried out a detailed field geological investigation combined with LA-(MC) ICP-MS trace element and S-Pb isotope microanalysis. The ore-bearing strata of Jinding deposit are sandstones of Jingxing Formation, and sandy-breccias and limestone breccias of Yunlong Formation. The mineralization of the deposit can be divided into two main stages: the stage I and stage II. The stage I can be further subdivided into the early stage I which mainly includes disseminated pyrite, marcasite, sphalerite, and galena; and the late stage I mainly including lumpy sulfide and minor celestite; while the stage II mainly include sphalerite, galena, pyrite, celestite, barite, calcite, and gypsum. These mineralization stages are characterized by different mineral assemblages and structural characteristics from early to late. Furthermore, the in situ trace elements and S-Pb isotopes of sulfide minerals showed regular evolutionary characteristics during the mineralization. According to the correlation of different trace elements in the sphalerite, the important coupled substitutions are discovered: 4Zn(2+) reversible arrow 2Fe(2+) + Ge4+, 2Zn(2+) reversible arrow Fe2+ + Mn2+, 3Zn(2+) reversible arrow In3+ + Sn3+ and other complex substitution relationships. Based on the evolution of trace elements and isotopes, we conclude that the ore-forming fluids of the Jinding Pb-Zn deposit is related to the basin brine rich in metals and the H2S-rich fluids in the early stage, and the mixing of meteoric water in the late stage, which extracted the red-bed clastic rocks rich in Fe, Mn and Tl, thus leading to the increase in the content of Fe, Mn, Tl and other elements. In addition, sphalerite also shows a wider range of trace element characteristics and a narrower range of Pb-208/Pb-204, Pb-207/Pb-204 and, delta(34) S values. The metal is mainly derived from the sedimentary strata of Lanping Basin. The giant Jinding Pb-Zn deposit is formed by the superposition of multiple sources of fluids. Bacterial sulfate reduction (BSR) plays an important role in the sulphate reduction, and there may also be a small contribution from thermochemical sulfate reduction (TSR) to sulphur reduction in the western ore block. Finally, we discussed the precise mineralization processes and ore genesis of the Jinding Pb-Zn deposit, and concluded that it is a MVT Pb-Zn deposit of metagenetic clastic rock bearing ore type enriched in dispersed trace elements such as Cd and Ge, whose mineralization was controlled by interlayer structures. |
| WOS关键词 | THERMOCHEMICAL SULFATE REDUCTION ; LA-ICP-MS ; FLUID INCLUSIONS ; OXYGEN ISOTOPES ; ORGANIC-MATTER ; MINOR ELEMENTS ; SOUTH CHINA ; SULFUR ; GENESIS ; SPHALERITE |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:001044588700015 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/111381]  |
| 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 | Wang JingBin |
| 作者单位 | 1.Beijing Inst Geol Mineral Resources, Beijing 100012, Peoples R China 2.Kunming Univ Sci & Technol, Fac Land & Resource Engn, Kunming 650093, Yunnan, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China 5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 6.Yunnan Jinding Zinc Ind Co Ltd, Lanping 671400, Peoples R China 7.Sinotech Minerals Zijin Explorat Co Ltd, Beijing 100012, Peoples R China 8.Yunnan Univ, Yunnan Key Lab Earth Syst Sci, Kunming 650500, Yunnan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li XiangCai,Wang JingBin,Zhu XinYou,et al. Precise discrimination on the mineralization processes of the Jinding Pb-Zn deposit, Lanping Basin, western Yunnan, China: Evidence from in situ trace elements and S-Pb isotopes of sulfides[J]. ACTA PETROLOGICA SINICA,2023,39(8):2511-2532. |
| APA | Li XiangCai.,Wang JingBin.,Zhu XinYou.,Li ChengHou.,Wu JinJian.,...&Guo YuHang.(2023).Precise discrimination on the mineralization processes of the Jinding Pb-Zn deposit, Lanping Basin, western Yunnan, China: Evidence from in situ trace elements and S-Pb isotopes of sulfides.ACTA PETROLOGICA SINICA,39(8),2511-2532. |
| MLA | Li XiangCai,et al."Precise discrimination on the mineralization processes of the Jinding Pb-Zn deposit, Lanping Basin, western Yunnan, China: Evidence from in situ trace elements and S-Pb isotopes of sulfides".ACTA PETROLOGICA SINICA 39.8(2023):2511-2532. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。