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Novel Aspects of the Metallogeny and Exploration of Gems and...
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Novel Aspects of the Metallogeny and Exploration of Gems and Precious Metals

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

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 5594

Special Issue Editor

Dr. Paul Alexandre

E-Mail Website
Guest Editor
Department of Geology, Brandon University, 270 – 18th Street, Brandon, MB R7A 6A9, Canada
Interests: metallogeny; exploration; geochemistry; mineralogy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Gems and precious metals (gold, silver, platinum) have, and continue to have, high economic significance, to say nothing of their societal importance and impact. While their deposits have been fairly well studied, several significant questions about their formation remain to be answered and numerous related topics remain to be covered.

This Special Issue is dedicated to the novel approaches or innovative combinations of methods that significantly enhance our knowledge of any type of gem or precious metals deposit. Contributions on traditional approaches applied to newly discovered deposits, deposits that have not been comprehensively studied, or deposits of a new type are also welcome. Of particular interest are submissions dealing with the application of novel methods, such as computational (e.g., big data, modelling), geochemical (e.g., unusual isotopes, trace and ultra-trace elements), novel geophysical methods, or a judicious combination of these. Review or compilation studies of a specific deposit type or deposits in a particular area, leading to new understanding and knowledge, are also welcome.

Submissions will be assessed primarily for the originality and novelty of their content, but also for scientific soundness and contribution of novel knowledge and understanding of the deposits of gems and precious metals.

Dr. Paul Alexandre
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

  • gems
  • precious metals
  • gold
  • silver
  • platinum
  • mineral deposits
  • metallogeny
  • exploration
  • geochemistry
  • mineralogy

Published Papers (2 papers)

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Research

26 pages, 10324 KiB  
Article
Integration of Stress–Strain Maps in Mineral Systems Targeting for IOCG Mineralisation within the Mt. Woods Inlier, Gawler Craton, South Australia
by Jonathan Nicholas Gloyn-Jones, Ian James Basson, Ben Stoch, Corné Koegelenberg and Michael-John McCall
Minerals 2022, 12(6), 699; https://doi.org/10.3390/min12060699 - 31 May 2022
Cited by 1 | Viewed by 2475
Abstract
The application of finite element analysis is used to simulate the relative distribution and magnitude of stress–strain conditions during a geologically brief, NNW-SSE-oriented, extensional event (1595 Ma to 1590 Ma), co-incident with IOCG-hydrothermal fluid flow and mineralisation across the Mt Woods Inlier, Gawler [...] Read more.
The application of finite element analysis is used to simulate the relative distribution and magnitude of stress–strain conditions during a geologically brief, NNW-SSE-oriented, extensional event (1595 Ma to 1590 Ma), co-incident with IOCG-hydrothermal fluid flow and mineralisation across the Mt Woods Inlier, Gawler Craton, South Australia. Differential stress and shear strain maps across the modelled terrane highlight regions that were predisposed to strain localization, extensional failure and fluid throughput during the simulated mineralisation event. These maps are integrated with other datasets and interpretation layers, one of which is a proposed structural–geometrical relationship apparent in many world-class IOCG deposits, including Prominent Hill, Olympic Dam, Sossego, Salobo, Cristalino and Candelaria. These deposits occur at steeply plunging, pipe-like intersections of conjugate extensional systems of faults, shears and/or contacts, wherein the obtuse angle may have been bisected by the maximum principal extensional axis (viz., σ3) during mineralisation. Several other layers are also used for the generation of targets, such as distance from major shear zones, favourable host lithologies, and proximity to tectonostratigraphic contacts of markedly contrasting competency. The result is an integrated target index or heat map for IOCG prospectively across the Mt. Woods Inlier. Full article
(This article belongs to the Special Issue Novel Aspects of the Metallogeny and Exploration of Gems and Precious Metals)
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14 pages, 2829 KiB  
Article
Nephrite of Bazhenovskoye Chrysotile–Asbestos Deposit, Middle Urals: Localization, Mineral Composition and Color
by Evgeniy V. Kislov, Yuriy V. Erokhin, Mikhail P. Popov and Anatoliy G. Nikolayev
Minerals 2021, 11(11), 1227; https://doi.org/10.3390/min11111227 - 4 Nov 2021
Cited by 6 | Viewed by 2392
Abstract
In the Bazhenovskoye chrysotile–asbestos deposit (Middle Urals), nephrite bodies of the serpentinite type were found on the contact of after gabbro rodingites and serpentinites. The color is uniform to non-uniform, green to light green, bluish green, greyish green, and whitish. Spots, streaks, lenticules [...] Read more.
In the Bazhenovskoye chrysotile–asbestos deposit (Middle Urals), nephrite bodies of the serpentinite type were found on the contact of after gabbro rodingites and serpentinites. The color is uniform to non-uniform, green to light green, bluish green, greyish green, and whitish. Spots, streaks, lenticules of bright bluish-green or, on the contrary, light green color are sometimes noted. The nephrite is mostly comprised of tremolite. Chromite decreases the quality of the ornamental stone, but it is replaced by chrome grossular, which gives the nephrite a brighter bluish-green color locally. Crushed grains of chromite contain increased concentrations of Zn and Mn. The quality of the nephrite is decreased by serpentine and talc, as well as by fractures due to drilling and blasting works. The specific feature of the nephrite in the Bazhenovskoye deposit is the formation of nickeline, maucherite, and uvarovite. The green color is associated with Fe2+ ions. The nephrite of the Bazhenovskoye deposit meets the requirements for an ornamental stone. The origin of this nephrite includes a combination of metasomatic and metamorphic processes. Full article
(This article belongs to the Special Issue Novel Aspects of the Metallogeny and Exploration of Gems and Precious Metals)
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