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Mineralogy, Petrology, and Geochemistry of Minerals and Rocks in the...
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Mineralogy, Petrology, and Geochemistry of Minerals and Rocks in the Carpathians, 2nd Edition

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

Deadline for manuscript submissions: closed (16 February 2024) | Viewed by 973

Special Issue Editor

Dr. Jaroslav Pršek

E-Mail Website
Guest Editor
Geophysics and Environmental Protection, Faculty of Geology, AGH University of Science and Technology, 30 Mickiewicz Av., 30-059 Krakow, Poland
Interests: crystallochemistry of sulphosalts; geochemistry; mineralogy and genesis of ore deposits; Nb-Ta mineralogy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The Carpathians (1500 km) are the third-longest European mountain range after the Urals (2500 km) and the Scandinavian Mountains (1700 km). Geologically, the Carpathians are a young European mountain chain forming the eastward continuation of the Alps. The Carpathians are part of the Alpine-Carpathian belt and were formed during the Alpine orogeny in the Mesozoic and Tertiary by moving the ALCAPA, Tisza and Dacia plates over subducting oceanic crust. However, the Carpathians have their specifics in development and metamorphism, but also in mineral and rock composition.

For this Special Issue, we invite authors to submit papers on mineralogical, petrological, geochemical, and geochronological investigations of various rocks and minerals from the whole Carpathians region. We also welcome contributions that address these topics and compare the composition of minerals and rocks from the Carpathians with other regions of the world.

Dr. Jaroslav Pršek
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

  • mineralogy
  • petrology
  • geochemistry
  • isotopic composition
  • minerals and rocks
  • ore deposits
  • carpathians

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Published Papers (1 paper)

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Research

21 pages, 7530 KiB  
Article
Ammonium-Bearing Fluorapophyllite-(K) in the Magnesian Skarns from Aleului Valley, Pietroasa, Romania
by Ştefan Marincea, Delia-Georgeta Dumitraş, Cristina Sava Ghineţ, Andra Elena Filiuţă, Fabrice Dal Bo, Frédéric Hatert and Gelu Costin
Minerals 2023, 13(11), 1362; https://doi.org/10.3390/min13111362 - 25 Oct 2023
Viewed by 687
Abstract
An ammonium-bearing fluorapophyllite-(K) occurs as a late hydrothermal product in the outer endoskarn zone from Aleului Valley (N 46°37′04″, E 22°35′22″), located at the contact of the granodiorite laccolith from Pietroasa, of Upper Cretaceous age, with Anisian dolostones. Associated minerals are wollastonite, K [...] Read more.
An ammonium-bearing fluorapophyllite-(K) occurs as a late hydrothermal product in the outer endoskarn zone from Aleului Valley (N 46°37′04″, E 22°35′22″), located at the contact of the granodiorite laccolith from Pietroasa, of Upper Cretaceous age, with Anisian dolostones. Associated minerals are wollastonite, K feldspar, diopside, fluorapatite, talc, and pectolite. The chemical structural formula is [K0.985Na0.012(NH4)0.076]Σ=1.073(Ca4.009Mn0.001Fe2+0.003Mg0.002Ba0.001)Σ=4.016(Si7.953Al0.047) O20.029[F0.899(OH)0.101]·8.059H2O. The structure was successfully refined as tetragonal, space group P4/mnc, with cell parameters of a = 8.9685(1) Å and c = 15.7885(5) Å. The indices of refraction are ω = 1.534(1) and ε = 1.536(1). The calculated density is Dx = 2.381 g/cm3, in good agreement with the measured density, Dm = 2.379(4) g/cm3. The thermal analysis shows that the mineral completely dehydrates at up to 450 °C (endothermic effects at 330, 371, and 448 °C) and loses ammonium at 634 °C. In the infrared spectra, the multiplicity of the bands assumed to be silicate modes (1ν1 + 3ν3 + 2ν2 + 3ν4) agrees with the reduction in the symmetry of the SiO44− ion from Td to Cδ. Fluorapophyllite-(K) from Aleului Valley is of late hydrothermal origin and crystallized from F-rich fluids originating from the granodiorite intrusion, which mobilized K, Ca, and Si from the pre-existing feldspar. Full article
(This article belongs to the Special Issue Mineralogy, Petrology, and Geochemistry of Minerals and Rocks in the Carpathians, 2nd Edition)
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