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Minerals
Special Issues
In-Situ Microanalytical Techniques in Geological and Geochronological Research
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In-Situ Microanalytical Techniques in Geological and Geochronological Research

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

Deadline for manuscript submissions: 9 August 2024 | Viewed by 2493

Special Issue Editor

Prof. Dr. Basem Zoheir

E-Mail Website
Guest Editor
Institute of Geosciences, University of Kiel, 24118 Kiel, Germany
Interests: mineralogy, economic geology; mineral exploration; remote sensing; structural geology, geochronology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

For decades, we have witnessed the fast-progressing use of in situ microanalytical techniques in geological research that significantly contribute to revealing the details of the mantle and crustal processes. These techniques, including X-ray energy dispersive and wavelength dispersive spectrometry, X-ray fluorescence, electron backscatter diffraction, Raman spectroscopy, secondary ion mass spectroscopy, and laser ablation inductively-coupled mass spectrometry, are common. These highly flexible techniques enable single-point(spot) analysis/ablation for inclusions, line or raster sampling for bulk analysis or imaging, and precise time-depth profiling studies. 

This Special Issue intends to publish a wide spectrum of interdisciplinary studies and new findings. Investigations that integrate microscopic and microanalytical data quantitatively and forensically to answer novel scientific questions and studies that attempt to advance understanding of terrestrial and extra-terrestrial igneous, metamorphic, and sedimentary processes, as well as mining and ore petrology, are highly welcomed.

Prof. Dr. Basem Zoheir
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

  • microchemical analysis
  • mineral deposits
  • petrogenesis
  • trace elements
  • microtextures

Published Papers (1 paper)

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Research

28 pages, 6429 KiB  
Article
Polymetallic Sulfide–Quartz Vein System in the Koudiat Aïcha Massive Sulfide Deposit, Jebilet Massif, Morocco: Microanalytical and Fluid Inclusion Approaches
by Samira Essarraj, Basem Zoheir, Matthew Steele-MacInnis, Matthias Frische, Abdelali Khalifa and Abdelmalek Ouadjou
Minerals 2022, 12(11), 1396; https://doi.org/10.3390/min12111396 - 31 Oct 2022
Cited by 1 | Viewed by 1952
Abstract
The Koudiat Aïcha Zn-Cu-Pb deposit (3–Mt ore @ 3 wt.% Zn, 1 wt.% Pb, 0.6 wt.% Cu) in the Jebilet massif (Morocco) comprises stratabound lenticular orebodies and crosscutting sulfide-bearing quartz ± carbonate veins in the lower Carboniferous Sarhlef volcano sedimentary succession. The veins [...] Read more.
The Koudiat Aïcha Zn-Cu-Pb deposit (3–Mt ore @ 3 wt.% Zn, 1 wt.% Pb, 0.6 wt.% Cu) in the Jebilet massif (Morocco) comprises stratabound lenticular orebodies and crosscutting sulfide-bearing quartz ± carbonate veins in the lower Carboniferous Sarhlef volcano sedimentary succession. The veins are characterized by abundant pyrrhotite, sphalerite, subordinate chalcopyrite and galena and rare Ag and Au minerals. The stratabound massive sulfide ores are attributed to a “VMS” type, whereas the origin of the sulfide–quartz ± carbonate veins remains poorly understood. New mineralogical and microanalytical data (SEM, EPMA and LA-ICP-MS) combined with fluid inclusion results point to two-stage vein formation. The early stage involved C–H–O–N Variscan metamorphic fluids which percolated through fractures and shear zones and deposited pyrite at >400 °C, followed by the formation of pyrrhotite and sphalerite (300 ± 20 °C) in quartz veins and in banded and breccia ores. The pyrrhotite–sphalerite mineralization was overprinted by aqueous brines (34 to 38 wt% eq. NaCl + CaCl2) that precipitated carbonate and Cu-Pb sulfides (±Ag-Au) at ~180–210 °C through mixing with low-salinity fluids during tectonic reworking of early-formed structures and in late extension fractures. The latter ore fluids were similar to widspread post-Variscan evaporitic brines that circulated in the Central Jebilet. Overlapping or successive pulses of different ore fluids, i.e., metamorphic fluids and basinal brines, led to metal enrichment in the quartz–carbonate veins compared to the massive sulfide ores. These results underscore that even a single deposit may record several distinct mineralizing styles, such that the ultimate metal endowment may be cumulative over multiple stages. Full article
(This article belongs to the Special Issue In-Situ Microanalytical Techniques in Geological and Geochronological Research)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: A protocol for electron-probe microanalysis (EPMA) of monazite for chemical Th-U-Pb age dating
Author: Bernhard Schulz (Technische Universitat Bergakademie Freiberg, Germany)
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