@article{MTMT:34738071, title = {A fogzománc szerkezeti és mechanikai tulajdonságai}, url = {https://m2.mtmt.hu/api/publication/34738071}, author = {Hegedűs, Máté and Kovácsné Kis, Viktória and Kovács, Zsolt}, journal-iso = {FIZIKAI SZEMLE}, journal = {FIZIKAI SZEMLE}, volume = {74}, unique-id = {34738071}, issn = {0015-3257}, year = {2024}, pages = {56-61}, orcid-numbers = {Kovács, Zsolt/0000-0001-6802-3311} } @article{MTMT:34722932, title = {Structural Changes of Bioapatite during Heat Treatment}, url = {https://m2.mtmt.hu/api/publication/34722932}, author = {Dallos, Zsolt and Golle-Leidreiter, Philipp and Molnár, Zsombor and Kristály, Ferenc and Kovács Kis, Viktória and Dódony, István}, doi = {10.1021/acs.cgd.3c01375}, journal-iso = {CRYST GROWTH DES}, journal = {CRYSTAL GROWTH & DESIGN}, volume = {24}, unique-id = {34722932}, issn = {1528-7483}, year = {2024}, eissn = {1528-7505}, pages = {2058-2063}, orcid-numbers = {Dallos, Zsolt/0000-0001-9108-4366; Molnár, Zsombor/0000-0002-9836-3488; Kristály, Ferenc/0000-0002-0075-5994} } @article{MTMT:34699351, title = {Improved Method for Electron Powder Diffraction-Based Rietveld Analysis of Nanomaterials}, url = {https://m2.mtmt.hu/api/publication/34699351}, author = {Kovácsné Kis, Viktória and Kovács, Zsolt and Czigány, Zsolt}, doi = {10.3390/nano14050444}, journal-iso = {NANOMATERIALS-BASEL}, journal = {NANOMATERIALS}, volume = {14}, unique-id = {34699351}, abstract = {Multiphase nanomaterials are of increasing importance in material science. Providing reliable and statistically meaningful information on their average nanostructure is essential for synthesis control and applications. In this paper, we propose a novel procedure that simplifies and makes more effective the electron powder diffraction-based Rietveld analysis of nanomaterials. Our single step in-TEM method allows to obtain the instrumental broadening function of the TEM directly from a single measurement without the need for an additional X-ray diffraction measurement. Using a multilayer graphene calibration standard and applying properly controlled acquisition conditions on a spherical aberration-corrected microscope, we achieved the instrumental broadening of ±0.01 Å in terms of interplanar spacing. The shape of the diffraction peaks is modeled as a function of the scattering angle using the Caglioti relation, and the obtained parameters for instrumental broadening can be directly applied in the Rietveld analysis of electron diffraction data of the analyzed specimen. During peak shape analysis, the instrumental broadening parameters of the TEM are controlled separately from nanostructure-related peak broadening effects, which contribute to the higher reliability of nanostructure information extracted from electron diffraction patterns. The potential of the proposed procedure is demonstrated through the Rietveld analysis of hematite nanopowder and two-component Cu-Ni nanocrystalline thin film specimens.}, keywords = {electron diffraction; Nanopowder; Rietveld analysis; nanostructure characterization; instrumental broadening}, year = {2024}, eissn = {2079-4991}, orcid-numbers = {Kovács, Zsolt/0000-0001-6802-3311; Czigány, Zsolt/0000-0001-6410-8801} } @article{MTMT:34643332, title = {Iron-Bearing Minerals in the Boda Claystone Formation: Correspondences with Stages of Evolution Revealed by Mössbauer Spectroscopy}, url = {https://m2.mtmt.hu/api/publication/34643332}, author = {Lázár, Károly and Máthé, Z and Németh, Tibor and Kovácsné Kis, Viktória and Stichleutner, Sándor and Kovács, Ivett}, doi = {10.3390/min14020196}, journal-iso = {MINERALS-BASEL}, journal = {MINERALS}, volume = {14}, unique-id = {34643332}, year = {2024}, eissn = {2075-163X}, orcid-numbers = {Németh, Tibor/0000-0002-1836-6006; Kovács, Ivett/0000-0001-7015-7909} } @article{MTMT:34593448, title = {Genesis of Gabbroic Hosted Copper Mineralisations in the Albanian Mirdita Zone (Kçira, Thirra)}, url = {https://m2.mtmt.hu/api/publication/34593448}, author = {Lovász, Anikó and Kovács, Zoltán and Baloghné Kiss, Gabriella}, doi = {10.3390/min14020195}, journal-iso = {MINERALS-BASEL}, journal = {MINERALS}, volume = {14}, unique-id = {34593448}, abstract = {There is a wide variety of ore deposits in Albania, where 20% of the Cu resources belong to a deposit type of unknown genesis (sulphide-bearing quartz veins in gabbroic rocks). The focus of this paper is on two mineralisations of this type (Kçira and Thirra) in the Mirdita Zone, an ophiolite zone representing the Mesozoic Neotethys Ocean in the Dinarides. Our aim is to understand the ore-forming processes and the genesis of these deposits, which can be used in future exploration projects. According to the petrographical analysis, the host rock suffered propylitic alteration or subgreenschist facies metamorphism. Mineral chemistry of pyrite and epidote suggests a VMS related origin, more precisely, the deeper part of its stockwork feeder zone. The bulk rock geochemical analyses confirms that the mineralisations are classified as mafic-, Cyprus-type VMS deposits. Differences in the geochemical compositions and the corresponding mineralogical observations are attributed to the distinct original geotectonic positions: higher amount of compatible elements (Cr, Ni, V and Cu) occur in Kçira, which formed in a mid-oceanic ridge environment, while incompatible elements (Ag, As, Co and Zn) are more abundant in the Thirra deposit, which formed in a supra-subduction zone setting.}, year = {2024}, eissn = {2075-163X}, orcid-numbers = {Baloghné Kiss, Gabriella/0000-0002-7162-2961} } @article{MTMT:34580028, title = {U-Pb geochronology, tourmaline geochemistry, and stable (B, S) isotope constraints from the Hirvilavanmaa Au-only and the polymetallic Naakenavaara orogenic gold deposits, Central Lapland belt, northern Finland}, url = {https://m2.mtmt.hu/api/publication/34580028}, author = {Vasilopoulos, Mikael and Molnár, Ferenc and Ranta, Jukka-Pekka and Kurhila, Matti and O'Brien, Hugh and Lahaye, Yann and Lukkari, Sari and Moilanen, Marko}, doi = {10.1016/j.gexplo.2024.107419}, journal-iso = {J GEOCHEM EXPLOR}, journal = {JOURNAL OF GEOCHEMICAL EXPLORATION}, volume = {258}, unique-id = {34580028}, issn = {0375-6742}, year = {2024}, eissn = {1879-1689}, orcid-numbers = {Molnár, Ferenc/0000-0002-1873-1915} } @article{MTMT:34429228, title = {Mineral exploration using trace element composition of pyrite grains from till: A case study from the Petäjäselkä Au occurrence, northern Finland}, url = {https://m2.mtmt.hu/api/publication/34429228}, author = {Taivalkoski, Atte and Ranta, Jukka-Pekka and Sarala, Pertti and Nikkola, Paavo and Liu, Xuan and Kalubowila, Charmee and Immonen, Ninna and Gilbricht, Sabine and Molnár, Ferenc}, doi = {10.1016/j.gexplo.2023.107359}, journal-iso = {J GEOCHEM EXPLOR}, journal = {JOURNAL OF GEOCHEMICAL EXPLORATION}, volume = {257}, unique-id = {34429228}, issn = {0375-6742}, year = {2024}, eissn = {1879-1689}, orcid-numbers = {Molnár, Ferenc/0000-0002-1873-1915} } @{MTMT:34780048, title = {Mezozoikum. Jura}, url = {https://m2.mtmt.hu/api/publication/34780048}, author = {Budai, Tamás and Raucsik, Béla and Ivancsics, Jenő and Király, Edit and Császár, Géza and Vörös, Attila and Szabó, Zoltán and Rálischné Felgenhauer, Erzsébet and Pelikán, Pál and Haas, János and Józsa, Sándor and Baloghné Kiss, Gabriella and Fodor, László and Knauer, József and Szinger, Balázs and Török, Ákos and Bércziné, Makk Anikó}, booktitle = {Magyarország litosztratigráfiai egységeinek leírása I.}, unique-id = {34780048}, year = {2023}, pages = {187-228}, orcid-numbers = {Raucsik, Béla/0000-0002-1951-5974; Józsa, Sándor/0000-0001-8219-0044; Baloghné Kiss, Gabriella/0000-0002-7162-2961} } @CONFERENCE{MTMT:34732708, title = {Egy bihari nemes szerepe a Vezúv 1822. évi kitöréséből származó mintáknak a Pannonhalmi Bencés Főapátságban őrzött Mitterpacher-gyűjteménybe kerülésében}, url = {https://m2.mtmt.hu/api/publication/34732708}, author = {Szücs, Levente Csaba and Gherdán, Tamás and Papp, Gábor and Weiszburg, Tamás}, booktitle = {XVI. Tudomány- és Technikatörténeti Konferencia}, unique-id = {34732708}, abstract = {A Pannonhalmi Bencés Főapátság ásványgyűjteménye az ELTE Természetrajzi Múzeum Ásványtára után a második legjelentősebb, igazolhatóan 18. századi anyagot tartalmazó gyűjtemény hazánkban. Több mint 900 darab 18. századi eredetű példányt tartalmaz. A gyűjtemény részét képezi egy mintasorozat, mely a Vezúv 1822. októberi kitöréséből származik. A kitörés por-és lapilli mintái, más, Nápoly környékéről és Szicíliából származó ásványokkal együtt, Mitterpacher György őrnagynak, a komáromi katonai kórház parancsnokának gyűjteményéből kerültek a főapátság tulajdonába. Mitterpacher György hagyatéki leltárában felbukkan Frimont János neve. Frimont János Lotaringiából származott, lovassági tábornokként és huszárezred-tulajdonosként Velence és Dél-Itália vezénylő parancsnoka volt, akit I. Ferenc császár katonai érdemeiért grófi rangra emelt és Bihar vármegyében hat helységet adományozott neki, köztük a Nagyszalontai járáshoz tartozó Palotát. Frimont Jánost felesége, Mitterpacher Katalin révén családi kapcsolat fűzte Mitterpacher Györgyhöz. Minden bizonnyal ennek a kapcsolatnak köszönhetőek a pannonhalmi ásványgyűjtemény dél-itáliai vonatkozásai. A Mitterpacher gyűjteményben – a vezúvi példányok mellett is – a korabeli kollekciókhoz képest jelentős arányban vannak kőzetek. Ez sajátos jelleget kölcsönöz e gyűjteménynek, egyben a főapátsági gyűjtemény tudománytörténeti jelentőségét is tovább erősíti.}, year = {2023}, pages = {83-90}, orcid-numbers = {Gherdán, Tamás/0000-0002-8307-8342; Weiszburg, Tamás/0000-0001-8183-4434} } @article{MTMT:34473022, title = {Silver isotope analysis and systematics of native gold from the Rajapalot Co-enriched gold deposit, Finnish Lapland}, url = {https://m2.mtmt.hu/api/publication/34473022}, author = {Tepsell, J. and Lahaye, Y. and Molnár, Ferenc and Rämö, O.T. and Cook, N.}, doi = {10.1007/s00126-023-01239-y}, journal-iso = {MINER DEPOSITA}, journal = {MINERALIUM DEPOSITA}, unique-id = {34473022}, issn = {0026-4598}, abstract = {Silver is probably the closest isotopic proxy to track monoisotopic gold and has been shown to have great potential to yield new information on the origin and enrichment processes of gold. This study describes the development of a tailored analytical protocol for accurate analysis of Ag isotopes and provides the first Ag isotope data for the Paleoproterozoic Rajapalot Au-Co deposit, Finnish Lapland. Six native Au samples yield ε 109 Ag values (relative to NIST SRM 978a) from −6.8 to +2.1 and are within the range of Ag isotopic compositions reported for native Au samples. The mean of the analyzed Au samples is ε 109 Ag = −3.8 ± 1.7 (2SD) with most of the samples with negative ε 109 Ag values (−6.7 to −2.0); one sample has a positive ε 109 Ag value of +2.1 ± 0.5. Silver isotope fractionation in the Rajapalot Au deposit was likely associated with physicochemical processes related to deposition and/or re-mobilization of the ore rather than with source region inheritance. It is suggested that redox reactions involving Ag + ↔ Ag 0 phase change primarily account for the isotopic differences within the deposit. Our results also suggest that the Rajapalot Au-Co deposit was formed via multistage ore-forming processes and/or that the primary ore was re-mobilized, which caused isotope fractionation along fluid pathways. Silver isotope variation within a deposit may mark a fractional crystallization trend with the lightest isotopic composition representing the earliest precipitate. Hence, Ag isotopes show potential as an isotopic vectoring tool in search of Au-enriched domains.}, year = {2023}, eissn = {1432-1866}, orcid-numbers = {Molnár, Ferenc/0000-0002-1873-1915} }