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Minerals
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Role of Granitic Magmas in Porphyry, Epithermal, and Skarn Deposits
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Role of Granitic Magmas in Porphyry, Epithermal, and Skarn Deposits

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

Deadline for manuscript submissions: 25 July 2025 | Viewed by 2003

Special Issue Editors

Prof. Dr. Majid Ghaderi

E-Mail Website
Guest Editor
Department of Economic Geology, Tarbiat Modares University, Tehran 14115-175, Iran
Interests: economic geology; isotope and trace element geochemistry; exploration geochemistry
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Huan Li

E-Mail Website
Guest Editor
Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Ministry of Education, School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
Interests: W-Sn-Nb-Ta and Cu-Pb-Zn mineralization; vein-type Sb-Au; gold mineralization
Special Issues, Collections and Topics in MDPI journals
Dr. Kotaro Yonezu

E-Mail Website
Guest Editor
Department of Earth Resource Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
Interests: precious and rare metals; experimental geochemistry; geothermal geology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Porphyry, epithermal, and skarn deposits are major deposit types that produce large amounts of Cu, Au, Ag, Fe, W, Sn, Mo, Pb, and Zn, as well as other critical, nonferrous, and precious metals. This special issue focuses on the genesis of mineralization associated with granitic rocks, the tectonic setting of the deposits, and the evolutionary processes of magmas and their ore-forming fluids.

This Special Issue is focused on recent advances in the understanding of the role of granitic rocks in porphyry, epithermal, and skarn mineralization, including, but not limited to, topics such as magma sources and evolutionary processes of mineralization-related granites, in situ analysis of metal-bearing and skarn minerals, fluid exsolution and mineral precipitation processes, and the geochemistry/geochronology of typical porphyry, epithermal, and skarn deposits worldwide.

Prof. Dr. Majid Ghaderi
Prof. Dr. Huan Li
Dr. Kotaro Yonezu
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

  • porphyry, epithermal, and skarn deposits
  • granitic magmas
  • magma evolution
  • geochemistry
  • ore genesis

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Related Special Issue

Published Papers (2 papers)

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Research

24 pages, 17795 KiB  
Article
Geochemistry and Geochronology of W-Mineralized Fourque Granodiorite Intrusion, Pyrenean Axial Zone, Southern France
by Eric Gonzalez and Huan Li
Minerals 2025, 15(4), 342; https://doi.org/10.3390/min15040342 - 26 Mar 2025
Viewed by 232
Abstract
This study focuses on the Fourque massif, one of the thirty Variscan plutons outcropping along the Axial zone of the Pyrenees. It hosts a significant tungsten deposit that was actively mined until 1986. However, since the closure of the mine, no detailed geochemical [...] Read more.
This study focuses on the Fourque massif, one of the thirty Variscan plutons outcropping along the Axial zone of the Pyrenees. It hosts a significant tungsten deposit that was actively mined until 1986. However, since the closure of the mine, no detailed geochemical or geochronological studies have been conducted until recent investigations in 2019, leaving a significant gap in our understanding of this intrusion. This lack of research, along with the ongoing debate and uncertainties regarding the timing and magmatic processes of Variscan plutonism in the Pyrenees, underscores the importance of further investigations. To address these gaps, we present new zircon U–Pb geochronology, whole-rock and zircon geochemistry (X-ray fluorescence and LA-ICP-MS), and Ti-in-zircon thermometry. Our study compares nine new whole-rock geochemistry samples with the limited previous dataset from 1987, refining the petrogenetic interpretation of the intrusion. These efforts are framed within the ongoing debate surrounding the different Variscan intrusions in the Pyrenees, including the discussions on their emplacement age, magmatic context, type, and origin. Geochronological data indicate an age ranging from 304.6 ± 2.3 to 308.4 ± 2.6 Ma, with crystallization temperatures ranging from 700 to 800 °C. The granodiorite is characterized by differentiated petrogenetic facies, related to successive batches of magma rising from a deeper source. The granodiorite exhibits high ASI ratios (>1.3), classifying it as strongly peraluminous. While I-type granites are typically metaluminous to weakly peraluminous, such elevated ASI values suggest a significant influence of crustal assimilation during magmatic evolution. The geochemical signature of the intrusion is enriched in large ion lithophile elements (LILE) and light rare earth elements (LREEs) while showing depletion in heavy rare earth elements (HREEs), consistent with a high-K calc-alkaline, magnesian, syn-orogenic setting. Whole-rock and zircon trace element data suggest that the magma source involved partial melting of the continental crust, with evidence of interaction with a subduction-modified mantle component. By applying methods previously unapplied to this pluton, this study provides new data on its geochemistry and geochronology, revealing significant differences from previous interpretations. These findings offer deeper insights into the emplacement and evolution of the Fourque granodiorite, refining its role within the broader context of Variscan orogenesis in the Pyrenean Axial Zone and similar plutonic systems worldwide. Full article
(This article belongs to the Special Issue Role of Granitic Magmas in Porphyry, Epithermal, and Skarn Deposits)
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21 pages, 13098 KiB  
Article
Geochronological, Geochemical and Pb Isotope Inferences for Genesis of Wulandele Porphyry Molybdenum Deposit, Inner Mongolia, Northeast China
by Jianping Wang, Jiexian Zhang, Zhenjiang Liu, Yun Zhao and Fangfang Zhang
Minerals 2024, 14(7), 699; https://doi.org/10.3390/min14070699 - 9 Jul 2024
Cited by 1 | Viewed by 1150
Abstract
Integrated geochemical, U-Pb zircon, and Pb isotopic data from granitoids of the Wulandele porphyry molybdenum deposit, northeastern Inner Mongolia, are reported to disclose the possible magmatic process and Mo ore-forming process. LA-ICP-MS zircon U-Pb dating constrains the timing of the quartz diorite and [...] Read more.
Integrated geochemical, U-Pb zircon, and Pb isotopic data from granitoids of the Wulandele porphyry molybdenum deposit, northeastern Inner Mongolia, are reported to disclose the possible magmatic process and Mo ore-forming process. LA-ICP-MS zircon U-Pb dating constrains the timing of the quartz diorite and monzonitic granite to 282 ± 2.4 Ma and 135.4 ± 2.1 Ma, respectively. The ages are accordant with geological facts which state that the shallow Permian granitoids are only the ore-hosting rock while the concealed Cretaceous fine-grained granite is the causative intrusion. Whole-rock geochemical data show that the granitoids belong to the high-K calc-alkaline series, and are enriched in LILEs, but depleted in HSFEs. Permian granitoids exhibit I-type characteristics, while Cretaceous granite is akin to A-type granite. Pb isotopic ratios are consistent between Permian granitoids and Cretaceous granite with ratios of 206Pb/204Pb = 18.048–18.892, 207Pb/204Pb = 15.488–15.571, and 208Pb/204Pb = 37.066–38.441. Considering geological and geochemical features together, Permian granitoids are interpreted as subduction-related continental margin high-K calc-alkaline rocks, while Cretaceous granite may be the result of the remelting of the relic Permian arc in an extensional environment induced by the rollback of the Paleo-Pacific plate. Different from classical porphyry-type deposits, the Wulandele Mo deposit, which formed in an intraplate tectonic setting, indicates that the intraplate porphyry Mo deposit should be one of the important exploration targets in the Central Asian Orogenic Belt, especially its eastern segment. Full article
(This article belongs to the Special Issue Role of Granitic Magmas in Porphyry, Epithermal, and Skarn Deposits)
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