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Editorial Board Members’ Collection Series: "Critical and Strategic Minerals", 2nd...
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Editorial Board Members’ Collection Series: "Critical and Strategic Minerals", 2nd Edition

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

Deadline for manuscript submissions: 31 May 2025 | Viewed by 2099

Special Issue Editors

Prof. Dr. Jaroslav Dostal

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Guest Editor
Department of Geology, Saint Mary's University, Halifax, NS B3H 3C3, Canada
Interests: granitoid rocks and associated rare metal mineralization; use of basement geochemical signatures in terrane analyses; geochemistry of volcanic rocks; komatiites and related rocks
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. David Lentz

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Guest Editor
Department of Earth Sciences, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
Interests: petrogenesis of ore-forming magmatic systems; high-T magmatic hydrothermal processes; contact metasomatic processes; mineralized porphyry systems, granitic systems, pegmatite systems, and their volcanic equivalents
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Jia-Xi Zhou

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Guest Editor
Key Laboratory of Critical Minerals Metallogeny in Universities of Yunnan Province, School of Earth Sciences, Yunnan University, Kunming 650500, China
Interests: MVT Pb-Zn deposits; carbonate minerals U-Pb dating; ore deposit geochemistry; critical metals; ore prospecting
Special Issues, Collections and Topics in MDPI journals
Dr. Giovanni Grieco

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Guest Editor
Department of Earth Sciences, University of Milan, 20133 Milan, Italy
Interests: chromitites; mineral deposits; acid mine drainage; critical metals
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Critical and strategic minerals provide the building blocks for many modern technologies and are essential for the economic prosperity and national security of many industrial countries. As of 2024, the USA and the European Union’s list of critical and strategic metallic elements includes platinum-group elements (PGEs), rare earth elements (REEs), aluminum (Al), antimony (Sb), beryllium (Be), bismuth (Bi), cesium (Cs), chromium (Cr), cobalt (Co), gallium (Ga), germanium (Ge), hafnium (Hf), indium (In), lithium (Li), magnesium (Mg), manganese (Mn), nickel (Ni), niobium (Nb), rubidium (Rb), strontium (Sr), tantalum (Ta), tellurium (Te), tin (Sn), titanium (Ti), tungsten (W), vanadium (V), zinc (Zn), and zirconium (Zr). The global demand for these critical and strategic minerals is expected to significantly increase as the world transitions to clean energy and other green technologies.

The main objective of this Special Issue on critical and strategic minerals is to improve our understanding of the mineral deposits hosting these metals, especially in areas that assist and promote exploration and sustainable exploitation. Submissions on all types of deposits/mineralization and tailings are welcome.

Prof. Dr. Jaroslav Dostal
Prof. Dr. David Lentz
Prof. Dr. Jia-Xi Zhou
Dr. Giovanni Grieco
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

  • critical minerals
  • critical metals
  • critical raw materials
  • ore deposits
  • isotopes
  • geochemistry
  • platinum-group elements (PGEs)
  • rare earth elements (REEs)

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Related Special Issue

Published Papers (3 papers)

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Research

17 pages, 16838 KiB  
Article
Genesis of the Qingchayuan Flake Graphite Deposit in the Huangling Dome of Yangtze Block, South China
by Yang Huang, Weiwei Jiao, Lin Liu, Jianjun Chen and Yuan Ma
Minerals 2024, 14(11), 1103; https://doi.org/10.3390/min14111103 - 29 Oct 2024
Viewed by 445
Abstract
The Qingchayuan flake graphite deposit is located in the Huangling Dome, which represents a part of the Yangtze Block in South China. This deposit is a major and highly typical flake graphite deposit within this metallogenic region. The graphite ores are found within [...] Read more.
The Qingchayuan flake graphite deposit is located in the Huangling Dome, which represents a part of the Yangtze Block in South China. This deposit is a major and highly typical flake graphite deposit within this metallogenic region. The graphite ores are found within graphite-bearing mica schist and graphite-bearing biotite–plagioclase gneiss. The fixed carbon content varies from 3.52 to 13.78% with an average of 7.83%. The major element analysis shows that the main chemical components of the Qingchayuan flake graphite ore are SiO2, Al2O3, TFe2O3, and K2O. The carbon isotope study of the graphite ore indicates light carbon values ranging from −22.80 to −26.72‰, suggesting that it has a biogenic origin. In addition, the sulfur isotope values of the graphite samples range from −10.67 to −14.58‰, indicating the formation of the graphite deposit is related to biological processes. The presence of traces of migmatization around the graphite deposit indicates that the graphite has undergone ultra-high temperatures during the formation process. The origin of the Qingchayuan flake graphite deposit is explained by a two-stage genetic model, which involves material deposition and regional metamorphism (including migmatization). Firstly, after the deposition of carbonaceous material and its conversion into graphite by regional metamorphism, the graphite might have undergone recrystallization, resulting in the development of big flakes due to migmatization. This model is supported by previous studies and newly collected information. Full article
(This article belongs to the Special Issue Editorial Board Members’ Collection Series: "Critical and Strategic Minerals", 2nd Edition)
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13 pages, 23345 KiB  
Article
Clinopyroxenite-Wehrlite Porya Guba Complex with Fe-Ti-V and PGE-Cu-Ni Mineralization in the Northeastern Part of the Fennoscandian Shield: Evidence of Post-Orogenic Formation from Sm-Nd Isotope System
by Pavel A. Serov and Nikolay Yu. Groshev
Minerals 2024, 14(11), 1099; https://doi.org/10.3390/min14111099 - 29 Oct 2024
Viewed by 378
Abstract
The Porya Guba clinopyroxenite–wehrlite complex is located in the core of the Lapland–Kola collisional orogen (~2.0–1.9 billion years old) in the northeastern part of the Fennoscandian Shield and contains iron–titanium–vanadium and nickel–copper mineralization with platinum group elements (PGEs). The controversial geological position of [...] Read more.
The Porya Guba clinopyroxenite–wehrlite complex is located in the core of the Lapland–Kola collisional orogen (~2.0–1.9 billion years old) in the northeastern part of the Fennoscandian Shield and contains iron–titanium–vanadium and nickel–copper mineralization with platinum group elements (PGEs). The controversial geological position of the complex within the mafic granulites of the Kolvitsa mélange (pre-, syn- or post-orogenic) is clarified by Sm-Nd isotopic dating of the rocks and mineralization. The Sm-Nd age of the barren clinopyroxenites that dominate the complex is 1858 ± 34 Ma (εNd(T) = −1.5) and is interpreted as the time of its emplacement as evidenced by a sample from the largest intrusion, named Zhelezny. This age is younger than that of the peak of granulite metamorphism in the host rocks (1925–1915 Ma) and coincides within error with the age of rutile from granulites (1880–1870 Ma), indicating the time at which cooling to 450 °C occurs. Emplacement in the cooled rocks is confirmed by the detection of quenching zones in clinopyroxenites around granulite xenoliths. Magnetite ores, as well as mineralized pyroxenites with sulfide disseminations, are formed during a late stage of the complex development, as suggested by active assimilation of granulite xenoliths by these rocks. The isotopic age of mineralized pyroxenites enriched in PGEs is 1832 ± 35 Ma (εNd(T) = –2.0), while the age of magnetite ores is 1823 ± 19 Ma (εNd(T) = –2.5). Thus, the obtained isotopic data indicate that the emplacement of the Porya Guba complex and probably other small mafic–ultramafic intrusions in the Kolvitsa mélange granulites took place after the end of the Lapland–Kola collision. Full article
(This article belongs to the Special Issue Editorial Board Members’ Collection Series: "Critical and Strategic Minerals", 2nd Edition)
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19 pages, 3283 KiB  
Article
Characteristics of Lithium Deposits in Mongolia
by Jaroslav Dostal and Ochir Gerel
Minerals 2024, 14(10), 960; https://doi.org/10.3390/min14100960 - 24 Sep 2024
Viewed by 870
Abstract
Lithium is a strategic metal due to its use in green technologies, particularly battery manufacturing. It is on the US List of Critical Minerals and the European Union’s List of Critical Raw Materials. In Mongolia, there are three major types of potentially economic [...] Read more.
Lithium is a strategic metal due to its use in green technologies, particularly battery manufacturing. It is on the US List of Critical Minerals and the European Union’s List of Critical Raw Materials. In Mongolia, there are three major types of potentially economic Li deposits: (1) Deposits related to granites, granitic pegmatites and associated rocks; (2) Li-rich clay deposits; (3) Salar (Li brine) deposits. The first type of mineralization is associated with the lithium–fluorine-rich peraluminous A-type granites and related rocks (greisens, pegmatites, ongonites, ongorhyolites). The mineralization includes Li and also Sn, W, Ta and Nb. Lithium is hosted in Li-rich micas, unlike the world-class Li-bearing pegmatite deposits where the bulk of Li is in spodumene. In Mongolia, particularly promising are Li brines of endorheic basins in the Gobi Desert with an arid environment, high evaporation rates and low precipitation. Full article
(This article belongs to the Special Issue Editorial Board Members’ Collection Series: "Critical and Strategic Minerals", 2nd Edition)
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