Ag-Pb-Zn Deposits: Geology and Geochemistry

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Mineral Deposits".

Deadline for manuscript submissions: 31 July 2024 | Viewed by 2206

Special Issue Editors

School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China
Interests: Ag-Pb-Zn deposits; epithermal deposits; ore genesis
Dr. Yucai Song
E-Mail Website
Guest Editor
Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China
Interests: Pb-Zn mineralization; MVT deposits; Tethyan domain
Department of Materials Science, School of Natural Sciences, University of Patras, 26504 Rio Patras, Greece
Interests: VMS deposits; hydrothermal mineralization; geochemistry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Silver–lead–zinc mineralization has made a key contribution to the global supply of Ag and base metals, which are critical to our human life. Furthermore, numerous studies have identified that a large number of strategic metals could be hosted in sulfides from the Ag-Pb-Zn deposits. Therefore, more attention should be given to further understanding the geological occurrences, metal sources, fluid transport and metal precipitation, as well as ore exploration for those ore deposits worldwide. Even though some of those deposits demonstrate a close temporal, spatial, and genetic association with porphyry (e.g., porphyry–skarn–epithermal types), some Ag-Pb-Zn mineralization typically occurs peripheral to the porphyry systems and shows no genetic relation to the magmatic process (e.g., MVT and sandstone-hosted type). It could be relatively well understood for the metal and fluid sources for Ag-Pb-Zn mineralization related to the porphyry system; however, those possibilities related to non-magmatic conditions could be much more diverse. To better summarize and infer the genesis of the Ag-Pb-Zn mineralization in various geological conditions, this Special Issue will involve papers from various aspects, scales, and types for global Ag-Pb-Zn ore deposits.

Dr. Degao Zhai
Dr. Yucai Song
Prof. Dr. Panagiotis Voudouris
Dr. Stylianos Tombros
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Minerals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Ag-Pb-Zn mineralization
  • genetic model
  • ore-forming fluids
  • metal source
  • fluid evolution
  • geochronology
  • geochemistry
  • ore exploration

Published Papers (2 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

12 pages, 5724 KiB  
Article
The Occurrence and Chemical Composition of Bismuth-Bearing Minerals in the Niuxingba-Liumukeng Ag-Pb-Zn Deposit, Jiangxi Province, South China
Minerals 2024, 14(1), 53; https://doi.org/10.3390/min14010053 - 30 Dec 2023
Viewed by 869
Abstract
The Niuxingba-Liumukeng deposit, located in the Yinkeng ore field (Jiangxi province, South China), is a typical Ag-Pb-Zn deposit hosted in the Yudu-Ganxian metallogenic belt. Based on the field investigation and mineralogical studies, the mineralization of this deposit can be divided into three stages: [...] Read more.
The Niuxingba-Liumukeng deposit, located in the Yinkeng ore field (Jiangxi province, South China), is a typical Ag-Pb-Zn deposit hosted in the Yudu-Ganxian metallogenic belt. Based on the field investigation and mineralogical studies, the mineralization of this deposit can be divided into three stages: quartz-pyrite-arsenopyrite stage (I), quartz-galena-sphalerite-sulfosalt stage (II), and quartz-carbonate stage (III), with stage II being the main Ag mineralization stage. In this contribution, we reported the occurrence of bismuth-bearing minerals in this hydrothermal deposit and its implications for ore formation. Based on the results of electron microprobe analyses, we infer that the dominant occurrence of bismuth at Niuxingba-Liumukeng is primarily marked by solid solutions within the crystal lattice of galena and as visible independent bismuth-bearing minerals. The independent bismuth minerals consist of berryite [Pb3(Ag,Cu)5Bi7S16], emplectite (CuBiS2), and aikinite (PbCuBiS3). Most bismuth minerals replace chalcopyrite or fill in the cracks of pyrite and chalcopyrite. Meanwhile, we found a large number of Bi-bearing minerals closely coexisting with Ag-bearing minerals, indicating that bismuth may have played a crucial role in silver deposition from hydrothermal fluids. We considered that the existence of bismuth-rich melts associated with the ore-forming hydrothermal systems could help to promote the enrichment and precipitation of silver to form economic ores. Full article
(This article belongs to the Special Issue Ag-Pb-Zn Deposits: Geology and Geochemistry)
Show Figures

Figure 1

23 pages, 55036 KiB  
Article
Microfabrics, In Situ Trace Element Compositions of Pyrite, and the Sulfur Isotope Chemistry of Sulfides from the Xitieshan Pb-Zn Deposit, Qinghai Province, Northwest China: Analysis and Implications
Minerals 2023, 13(12), 1549; https://doi.org/10.3390/min13121549 - 15 Dec 2023
Viewed by 738
Abstract
The Xitieshan deposit, located in the central segment of the northern margin of the Qaidam Basin, is among the largest massive Pb-Zn sulfide deposits in China. This deposit, along with its ore-bearing rock series known as the Tanjianshan Group, underwent greenschist facies metamorphism [...] Read more.
The Xitieshan deposit, located in the central segment of the northern margin of the Qaidam Basin, is among the largest massive Pb-Zn sulfide deposits in China. This deposit, along with its ore-bearing rock series known as the Tanjianshan Group, underwent greenschist facies metamorphism due to subsequent orogeny. We investigated the in situ sulfur isotopes of sulfides with different occurrences to define the origin of ore-forming fluids. The δ34S values of sulfides from stratiform ores, massive ores in schist, stockwork ores in marble, schist and discolored altered rocks that constitute a typical double-mineralization structure range from −5.3‰ to +5.6‰ and from −1.7‰ to +32‰, respectively, indicating distinct biological and thermochemical reductions in seawater sulfates. These are similar to the sulfur isotopic characteristics of VSHMS deposits. Pyrite, whose LA-ICP-MS trace element compositions can provide significant information about metallogenic evolution and deposit genesis, is ubiquitous throughout the whole mineralization process. In these stratiform, massive and stockwork ores, three pyrite types were identified: colloform pyrite (Py0), fine-grained anhedral spongy pyrite (Py1) and coarse-grained euhedral pyrite (Py2). The contents of most metallogenic elements, such as Cu, Pb, Zn, Ag, Mo, Mn and Sn, decrease from Py0 to Py2 with the enhancement of metamorphic recrystallization. This suggests that the expelled elements appear as inclusions in primitive pyrite, contributing to the precipitation of new sulfide phases, such as sphalerite and galena. Orogenic metamorphism played an important role in controlling further Pb-Zn enrichment of the Xitieshan deposit. Moreover, there is another mineralization type, primarily occurring as sulfide veins in the undeformed Formation C siltstones of the Tanjianshan Group, which also crosscut early-formed sulfides, showing close-to-zero S isotopic compositions. In this mineralization type, pyrite (Py3) displays high Se/Tl (>10) and Co/Ni (>2.2) ratios, both indicating a minor superimposed post-orogenic magmatic–hydrothermal event. Full article
(This article belongs to the Special Issue Ag-Pb-Zn Deposits: Geology and Geochemistry)
Show Figures

Figure 1

Back to TopTop