Advances in Analytical Chemistry for Mineralogical and Environmental Studies

A special issue of Geosciences (ISSN 2076-3263). This special issue belongs to the section "Geochemistry".

Deadline for manuscript submissions: 30 November 2025 | Viewed by 486

Special Issue Editors


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Guest Editor
Institute of Earth and Environmental Sciences, Maria Curie-Sklodowska University, Lublin, Poland
Interests: mineralogy; petrography; Arctic environment; recultivation study; SEM analysis

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Guest Editor
Department of Organic Chemistry And Crystalochemistry, Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin, Poland
Interests: crystallochemistry; environmental analysis; biochemistry; nanomaterials

Special Issue Information

Dear Colleagues,

Chemical research is crucial in the field of Earth sciences. In mineralogical research, which employs modern instrumental methods, it is possible to determine the physicochemical properties of minerals and rocks; it is therefore possible to study the evolution of not only the studied massifs but also individual minerals, which can store information about the different stages of crystallization in a variable geological environment within their structure. These studies also utilize environmental analyses that aim to determine the degree of environmental pollution and the impact of anthropogenic pressure on ecosystems, with chemical research being the basis of all these tasks. This Special Issue of Geosciences therefore welcomes the submission of articles that address the above topics.

Dr. Miłosz Huber
Prof. Dr. Daniel Kamiński
Guest Editors

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Keywords

  • geochemistry
  • crystalochemistry
  • mineralogy
  • environmental sciences
  • recultivation

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Published Papers (1 paper)

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Research

19 pages, 8020 KiB  
Article
Homrit Akarem Post-Collisional Intrusion, Southeastern Desert, Egypt: Petrogenesis of Greisen Formed in a Cupola Structure and Enrichment in Strategic Minerals
by Mokhles K. Azer, Adel A. Surour, Hilmy E. Moussa, Ayman E. Maurice, Mabrouk Sami, Moustafa A. Abou El Maaty, Adel I. M. Akarish, Mohamed Th. S. Heikal, Ahmed A. Elnazer, Mustafa A. Elsagheer, Heba S. Mubarak, Amany M. A. Seddik, Hadeer Sobhy and Mohamed O. Osama
Geosciences 2025, 15(6), 200; https://doi.org/10.3390/geosciences15060200 - 26 May 2025
Viewed by 355
Abstract
The greisens discussed in the present study are associated with the Homrit Akarem post-collisional granites, which are exposed near the western edge of the Egyptian Nubian Shield in the Southeastern Desert of Egypt. The Homrit Akarem granites intruded into Neoproterozoic country rocks, with [...] Read more.
The greisens discussed in the present study are associated with the Homrit Akarem post-collisional granites, which are exposed near the western edge of the Egyptian Nubian Shield in the Southeastern Desert of Egypt. The Homrit Akarem granites intruded into Neoproterozoic country rocks, with sharp intrusive contacts. The marginal parts of the Homrit Akarem intrusion underwent extensive post-magmatic metasomatism, resulting in the formation of albitized granite and greisens. The Homrit Akarem greisens occur as veins and stockworks, which can be classified into four types: muscovite-rich, cassiterite-rich, topaz-rich, and beryl-rich greisens. Based on petrographic inspection, we identified ore minerals (cassiterite, beryl, topaz, muscovite, Nb-Ta oxides, tourmaline, fluorite, and corundum) in the greisens using electron probe microanalysis. The Homrit Akarem mineralized greisens were formed in a magmatic cupola above A-type magma, where fluid–rock interactions played a significant role in their formation. The accumulation of residual volatile-rich melt and exsolved fluids in the apical part of the magma chamber produced albitized granite, greisens, and quartz veins that intruded into the peripheries of the granitic intrusion and its surrounding country rocks. The variation in the mineralogy of the studied greisens indicates the diverse chemical composition of both the hydrothermal/magmatic fluids and the host granites. The simultaneous decrease in temperature and pressure is considered a crucial factor that controlled mineralization in the apical parts of the magma chamber. The occurrence of cassiterite, beryl, topaz, tourmaline, muscovite, and Nb-Ta oxides in the studied greisens suggests a potential polymetallic deposit of industrial minerals. Full article
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