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Minerals
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Mineralogy of Porphyry Systems: Genesis, Exploration, and Applications
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Mineralogy of Porphyry Systems: Genesis, Exploration, and Applications

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

Deadline for manuscript submissions: 30 June 2025 | Viewed by 1303

Special Issue Editor

Dr. Guoxue Song

E-Mail Website
Guest Editor
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
Interests: hydrothermal deposits; prospecting mineralogy; genetic mineralogy; experimental petrology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Porphyry metallogenic systems are related to the emplacement of porphyry stocks within upper crustal levels and above deep magma chambers. Porphyry systems are mainly associated with porphyry, epithermal, and skarn ore deposits. Research on the genesis of porphyry deposits not only provides support for their exploration but also helps geologists to reveal the evolution processes within Earth's continental crust.

In the context of research on hydrothermal ore deposits, the study of porphyry deposits has received increasing interest, and new ideas on their formation have been introduced. In recent years, with the improvement and application of in situ mineralogical identification and analysis, researchers working on porphyry-related deposits are gradually shifting their focus from traditional research methods to detailed studies on associated minerals. In this regard, this Special Issue is mostly focused on relevant topics, including genesis, exploration, and applications of minerals in porphyry metallogenic systems.

The main objective of this Special Issue of Minerals is to promote the development of prospecting mineralogy and genetic mineralogy in porphyry systems, and it may prove significant in expanding the mineralogist’s knowledge on the evolution of porphyry systems. Furthermore, it will greatly enhance and improve the application of mineralogy on exploration of buried, unexposed porphyry systems.

Dr. Guoxue Song
Guest Editor

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

  • porphyry systems
  • genesis
  • exploration
  • applications
  • in situ micro-analysis

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Published Papers (2 papers)

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17 pages, 22158 KiB  
Article
Ore Genesis of the Langcun Porphyry W-Mo Deposit, South China: Constraints from Fluid Inclusion and H-O-S Isotopics
by Kai Cui, Yunwei Qu, Yuling Xie, Kejun Yang and Zhaoqiang Huang
Minerals 2025, 15(2), 109; https://doi.org/10.3390/min15020109 - 23 Jan 2025
Viewed by 336
Abstract
The Langcun W-Mo deposit, located in the Zhejiang Province of South China, is a medium-sized porphyry deposit. The ore bodies mainly occur in aplite, granite porphyry, and the contact zone with hornfels of the Nanhua System. Four stages of mineralization are recognized in [...] Read more.
The Langcun W-Mo deposit, located in the Zhejiang Province of South China, is a medium-sized porphyry deposit. The ore bodies mainly occur in aplite, granite porphyry, and the contact zone with hornfels of the Nanhua System. Four stages of mineralization are recognized in the Langcun deposit, including the quartz–K-feldspar stage (stage I), quartz–sericite–molybdenite stage (stage II), quartz–chlorite–pyrite stage (stage III), and calcite stage (stage IV). Stages I and II are the main ore-forming stages for wolframite and molybdenite. The petrographic and microthermometric results show that four types of fluid inclusions exist in the Langcun W-Mo deposit, including two-phase liquid-rich fluid inclusions (type LV), three-phase CO2-rich fluid inclusions (type LC), pure CO2 fluid inclusions (type C), vapor H2O inclusions (type V), and multi-phase inclusions with daughter minerals (type LDV). In stage I, the fluid inclusion assemblage is LDV + LV + V, and the LDV and LV fluid inclusions have similar homogenization temperatures (281–387 °C), indicating a boiling fluid inclusions association. In stage II, the fluid inclusion assemblage is LC + C, indicating immiscibility between CO2 and aqueous fluids. The homogenization temperatures of type LC are in the range of 228–342 °C, and the salinities are in the range of 2.77–5.14 wt.% NaCl equiv. The fluid inclusions in stages III and IV are type LV, with homogenization temperatures in the ranges of 224–275 °C and 200–225 °C, respectively, and salinities in the ranges of 1.74 to 4.96 wt.% NaCl equiv and 1.06 to 3.39 wt.% NaCl equiv, respectively. Hydrogen and oxygen isotopic results indicate that the ore-forming fluids mainly come from magmatic water in the early stage and may have received an input of meteoric water in the late stage, which results in the decrease in the temperature and salinity of ore-forming fluid. Early W-Mo precipitation was induced by CO2 escape because of decompression, and fluid mixing resulted in Mo precipitation in the later stage. Full article
(This article belongs to the Special Issue Mineralogy of Porphyry Systems: Genesis, Exploration, and Applications)
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20 pages, 21100 KiB  
Article
Petrogenesis and Metallogenic Significance of the Demingding Mo-Cu Porphyry Deposit in the Gangdese Belt, Xizang: Insights from U-Pb and Re-Os Geochronology and Geochemistry
by Sudong Shi, Shuyuan Chen, Sangjiancuo Luo, Huan Ren and Xiaojia Jiang
Minerals 2024, 14(12), 1232; https://doi.org/10.3390/min14121232 - 3 Dec 2024
Viewed by 725
Abstract
The 1500 km-long Gangdese magmatic belt is a crucial region for copper polymetallic mineralization, offering valuable insights into collisional porphyry copper systems. This study focuses on the Demingding deposit, a newly identified occurrence of molybdenum–copper (Mo-Cu) mineralization within the eastern segment of the [...] Read more.
The 1500 km-long Gangdese magmatic belt is a crucial region for copper polymetallic mineralization, offering valuable insights into collisional porphyry copper systems. This study focuses on the Demingding deposit, a newly identified occurrence of molybdenum–copper (Mo-Cu) mineralization within the eastern segment of the belt. While the mineralization age, magmatic characteristics, and tectonic context are still under investigation, we examine the deposit’s petrology, zircon U-Pb geochronology, whole-rock chemistry, and Re-Os isotopic data. The Demingding deposit exhibits a typical alteration zoning, transitioning from an inner potassic zone to an outer propylitic zone, which is significantly overprinted by phyllic alteration closely associated with Mo and Cu mineralization. Zircon U-Pb dating of the ore-forming monzogranite porphyries reveals crystallization ages ranging from 21 to 19 Ma, which is indistinguishable within error from the mean Re-Os age of 21.3 ± 0.4 Ma for Mo veins and veinlets hosted by these porphyries. This alignment suggests a late Miocene magmatic event characterized by Mo-dominated mineralization, coinciding with the continuous thickening of the continental crust during the collision of the Indian and Asian continents. The ore-forming porphyries range in composition from granodiorite to monzogranite and are classified as high-K calc-alkaline with adakite-like features, primarily resulting from the partial melting of subduction-modified thickened mafic lower crust. Notably, the ore-forming porphyries exhibit higher fO2 and H2O levels than barren porphyries in this area during crustal thickening, highlighting the significant contributions of hydrous and oxidized fluids from their source to the Mo-Cu mineralization process. Regional data indicate that the Gangdese porphyry metallogenic belt experienced concentrated Cu-Mo mineralization between 17 and 13 Ma. The formation of Mo-dominated deposits such as Demingding and Tangbula in the eastern segment of the belt, with slightly older ages around 20 Ma, underscores the presence of a significant porphyry Mo metallogenic event during this critical post-collision mineralization period. Full article
(This article belongs to the Special Issue Mineralogy of Porphyry Systems: Genesis, Exploration, and Applications)
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