TY - JOUR AU - Gyollai, Ildikó AU - Biri, Sándor AU - Juhász, Zoltán AU - Király, Csilla AU - Rácz, Richárd Péter AU - Rezes, Dániel AU - Sulik, Béla AU - Szabó, Máté Zoltán AU - Szalai, Zoltán AU - Szávai, P AU - Szklenár, Tamás AU - Kereszturi, Ákos TI - Raman–Infrared Spectral Correlation of an Artificially Space-Weathered Carbonaceous Chondrite Meteorite JF - MINERALS J2 - MINERALS-BASEL VL - 14 PY - 2024 IS - 3 SN - 2075-163X DO - 10.3390/min14030288 UR - https://m2.mtmt.hu/api/publication/34762210 ID - 34762210 AB - Raman and infrared measurements of the same locations were conducted on a northwest African (NWA) 10580 CO3 meteorite sample, before and after three proton irradiations (1 keV ion energy using 1011, 1014, and 1017 ion/cm2 fluent values), to simulate space weathering effects. In the case of Raman spectroscopy, both FWHM and peak positions of the major olivine and pyroxene bands changed after the irradiation, and the minor bands disappeared. In the FTIR spectra, the minor bands of olivine and pyroxene also disappeared; meanwhile, major IR bands of pyroxene remained visible, demonstrating both positive and negative peak shifts, and the olivines were characterised only by negative peak shifts. The olivines were characterised by negative FWHM changes for major bands, but positive FWHM changes for minor bands. The pyroxenes were characterised by elevated FWHM changes for minor bands after the irradiation. The disappearance of minor bands both of IR and Raman spectra indicates the amorphization of minerals. The negative peak shift in IR spectra indicates Mg loss for olivine and pyroxene, in agreement with the literature. The Raman spectra are characterised by positive peak shift and positive FWHM changes; the IR spectra are characterised by a negative peak shift. The Mg loss, which was detected by negative peak shifts of FTIR bands, may be caused by distortion of the crystal structure, which could be detected by a positive peak shift in Raman spectra. This joint observation and interpretation has not been formulated in the literature, but indicates further possibilities in the confirmation of mineral changes by different instruments. Shock alteration-based observations by other researchers could be used as a reference for irradiation experiments as irradiation makes a similar structural alteration, like a low-grade shock metamorphism. LA - English DB - MTMT ER - TY - JOUR AU - Bujtor, László AU - Gyollai, Ildikó AU - Szabó, Máté Zoltán AU - Kovács, Ivett AU - Polgári, Márta Piroska TI - Bacteria-Driven Fossil Ecosystems as Paleoindicators of Active Continental Margins and the Role of Carbonate Sediment-Hosted Vents in Geodynamic Reconstructions JF - MINERALS J2 - MINERALS-BASEL VL - 14 PY - 2024 IS - 2 PG - 22 SN - 2075-163X DO - 10.3390/min14020125 UR - https://m2.mtmt.hu/api/publication/34530343 ID - 34530343 N1 - Institute of Geography and Environmental Sciences, Eszterházy Károly Catholic University, 6-8 Leányka Street, Eger, H-3300, Hungary HUN-REN Research Centre for Astronomy and Earth Sciences, Institute for Geological and Geochemical Research, Budaörsi út 45, Budapest, H-1112, Hungary HUN-REN Research Centre for Astronomy and Earth Sciences, MTA Centre of Excellence, Konkoly Thege Miklós út 15-17, Budapest, H-1121, Hungary Export Date: 25 March 2024 Correspondence Address: Polgári, M.; Institute of Geography and Environmental Sciences, 6-8 Leányka Street, Hungary; email: rodokrozit@gmail.com AB - Continental rifting of the Tisza microplate started during the Late Jurassic and resulted in phreatic eruptions, peperite, and the construction of a volcanic edifice in the Early Cretaceous in the Mecsek Mountains (South Hungary). In the SE direction from the volcanic edifice at Zengővárkony, a shallow marine (depth 100–200 m) carbonate sediment hosted a vent environment, and iron ore deposition occurred at the end of the Valanginian to early Hauterivian, hosting a diverse, endemic fauna of approximately 60 species. The detailed mineralogical analysis of the transport conduits included Fe oxides (ferrihydrite, goethite, hematite, and magnetite), quartz, mixed carbonate, pyrite, feldspar, Fe-bearing clay minerals, apatite, sulfates (barite, gypsum, and jarosite), and native sulfur. Filamentous, microbially mediated microtextures with inner sequented, necklace-like spheric forms (diameter of 1 μm) and bacterial laminae are also observed inside decapod crustacean coprolites (Palaxius tetraochetarius) and in the rock matrix. This complex ecological and mineralogical analysis provided direct evidence for the presence of bacteria in fossil sediment-hosted vent (SHV) environments on the one hand and for the intimate connection between bacteria and decapod crustaceans in hydrothermal environments 135 Ma before. This observation completes the fossil food chain of chemosynthesis-based ecosystems, from primary producers to the top carnivores reported for the first time from this locality. LA - English DB - MTMT ER - TY - JOUR AU - Gyollai, Ildikó AU - Biri, Sándor AU - Juhász, Zoltán AU - Király, Csilla AU - Pal, B.D. AU - Rácz, Richárd Péter AU - Rezes, Dániel AU - Sulik, Béla AU - Szabó, Máté Zoltán AU - Szalai, Zoltán AU - Szavai, P. AU - Szklenár, Tamás AU - Kereszturi, Ákos TI - Irradiation induced mineral changes of NWA10580 meteorite determined by infrared analysis JF - ASTRONOMY & ASTROPHYSICS J2 - ASTRON ASTROPHYS VL - 683 PY - 2024 PG - 12 SN - 0004-6361 DO - 10.1051/0004-6361/202347467 UR - https://m2.mtmt.hu/api/publication/34499100 ID - 34499100 N1 - Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, HUN-REN, Budapest, Hungary HUN-REN, Institute for Nuclear Research, Debrecen, Hungary Konkoly Thege Astronomical Institute, Research Centre for Astronomy and Earth Sciences, HUN-REN, Budapest, Hungary Csfk, Mta Centre of Excellence Budapest, Konkoly Thege Miklós út 15-17., Budapest, 1121, Hungary Eotvos Lorand University of Sciences (ELTE), Budapest, Hungary Geographical Institute, Research Centre for Astronomy and Earth Sciences, HUN-REN, Budapest, Hungary Department of Systems Innovation, School of Engineering, The University of Tokyo, Tokyo, Japan Atomki, Institute of Nuclear Research, Debrecen, 4026, Hungary Export Date: 25 March 2024 CODEN: AAEJA Correspondence Address: Pál, B.D.; Konkoly Thege Astronomical Institute, Hungary; email: pal.bernadett@csfk.org Correspondence Address: Kereszturi, A.; Konkoly Thege Astronomical Institute, Hungary; email: kereszturi.akos@csfk.org AB - Identifying minerals on asteroid surfaces is difficult as space weathering modifies the minerals' infrared spectra. This should be better understood for proper interpretation. We simulated the space weathering effects on a meteorite and recorded the alterations of the crystalline structure, such as the change in peak positions and full width at half maximum values. We used proton irradiation to simulate the effects of solar wind on a sample of NWA 10580 CO3 chondrite meteorites. After irradiation in three gradually increased steps with 1 keV ion energy, we used infrared microscopic reflectance and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) to identify and understand the consequences of irradiation. We find negative peak shifts after the first and second irradiations at pyroxene and feldspar minerals, similarly to the literature, and this shift was attributed to Mg loss. However, after the third irradiation a positive change in values in wavenumber emerged for silicates, which could come from the distortion of SiO tetrahedra, resembling shock deformation. The full width at half maximum values of major bands show a positive (increasing) trend after irradiations in the case of feldspars, using IR reflection measurements. Comparing DRIFTS and reflection infrared data, the peak positions of major mineral bands were at similar wavenumbers, but differences can be observed in minor bands . We measured the spectral changes of meteorite minerals after high doses of proton irradiation for several minerals. We show the first of these measurements for feldspars; previous works only presented pyroxene, olivine, and phyllosilicates. LA - English DB - MTMT ER - TY - JOUR AU - Demény, Attila AU - Czuppon, György AU - Kern, Zoltán AU - Hatvani, István Gábor AU - Topál, Dániel AU - Karlik, Máté AU - Surányi, Gergely AU - Molnár, Mihály AU - Kiss, Gabriella Ilona AU - Szabó, Máté Zoltán AU - Shen, CC AU - Hu, HM AU - May, Zoltán TI - A speleothem record of seasonality and moisture transport around the 8.2 ka event in Central Europe (Vacska Cave, Hungary) JF - QUATERNARY RESEARCH J2 - QUATERNARY RES VL - 118 PY - 2024 SP - 195 EP - 210 PG - 16 SN - 0033-5894 DO - 10.1017/qua.2023.33 UR - https://m2.mtmt.hu/api/publication/34082661 ID - 34082661 N1 - Published online: 28 July 2023 LA - English DB - MTMT ER - TY - CONF AU - Viczián, István AU - Viczián, I AU - Szabó, Máté Zoltán TI - Dunai ártéri üledékek ásványtani összetétele óbudai régészeti feltárásokban T2 - 18. Téli Ásványtudományi Iskola PY - 2023 UR - https://m2.mtmt.hu/api/publication/34526407 ID - 34526407 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Mozgai, Viktória AU - Schilling, László AU - Szabó, Máté Zoltán AU - Bajnóczi, Bernadett TI - Archaeometric Investigation of a Hunnic-Period Sacrificial Assemblage from Nyergesújfalu, Hungary JF - INTERDISCIPLINARIA ARCHAEOLOGICA - NATURAL SCIENCES IN ARCHAEOLOGY J2 - INTERDISCIP ARCHAEOL VL - 14 PY - 2023 IS - 2 SP - 167 EP - 181 PG - 15 SN - 1804-848X DO - 10.24916/iansa.2023.2.2 UR - https://m2.mtmt.hu/api/publication/34478176 ID - 34478176 AB - Near Nyergesújfalu (Komárom-Esztergom County, Hungary), objects of a Hunnic-period sacrificial assemblage were found in 2021. The Hunnic period assemblage contains fifteen items altogether: four gold lunular mounts, six cellwork-decorated gold oval mounts, two cellwork-decorated gold suspension rings, two gold buckles and fragments of a scale-patterned gilded silver plate. The present study aims to determine the elemental composition of the metal alloy of the Hunnic-period objects and characterise the decoration techniques (gilding and garnet inlays) by using optical microscopy, handheld X-ray fluorescence spectrometry (hXRF) and scanning electron microscopy with energydispersive X-ray spectrometry (SEM-EDX). The gold objects, including their small parts such as the rivets of buckles and lunular mounts, sockets and filigree, were manufactured from a relatively goodquality gold alloy (>80 wt% Au). The fragments of the scale-patterned silver plate were manufactured from a high-quality silver alloy (>94 wt% Ag), similar to late Roman silver alloys characterised by high Ag content, and was decorated with fire (mercury) gilding. The garnets used for inlays are almandine and intermediate pyrope-almandine garnets. Based on their chemistry, the garnets belong to Group X and probably originate from the placer deposits of Sri Lanka. LA - English DB - MTMT ER - TY - CHAP AU - Viczián, I id AU - Viczián, István AU - Szabó, Máté Zoltán ED - Raucsikné Varga, Andrea Beáta TI - Dolomitos mésziszap dunai ártéri üledékekben a budapesti Római-parton T2 - 13. Kőzettani és Geokémiai Vándorgyűlés PB - Szegedi Tudományegyetem TTIK, Ásványtani, Geokémiai és Kőzettani Tanszék CY - Szekszárd SN - 9789633069615 PY - 2023 SP - 31 EP - 32 PG - 2 UR - https://m2.mtmt.hu/api/publication/34158267 ID - 34158267 N1 - Előadás LA - Hungarian DB - MTMT ER - TY - JOUR AU - Polgári, Márta Piroska AU - Nagy, Béla AU - Fintor, Krisztián AU - Gyollai, Ildikó AU - Kovács, Ivett AU - Szabó, Máté Zoltán AU - Mojzsis, Stephen, James TI - Microbially-induced K enrichments in hydrothermally altered andesitic tuffs JF - ORE GEOLOGY REVIEWS J2 - ORE GEOL REV VL - 162 PY - 2023 PG - 20 SN - 0169-1368 DO - 10.1016/j.oregeorev.2023.105630 UR - https://m2.mtmt.hu/api/publication/34158142 ID - 34158142 N1 - Funding Agency and Grant Number: Hungarian National Research, Development and Innovation Office, National Scientific Research [125060]; Research Centre for Astronomy and Earth Sciences Funding text: The authors are grateful for the support of the Hungarian National Research, Development and Innovation Office, National Scientific Research Fund No. 125060. Further support with provided by the Research Centre for Astronomy and Earth Sciences. SJM thanks the Alexander von Humboldt Foundation for the AvH Research Prize hosted by the Friedrich -Schiller University in Jena (Germany) during which time a significant amount of the writing took place. LA - English DB - MTMT ER - TY - CHAP AU - Kreiter, Attila AU - Györkös, Dorottya AU - Raczky, Pál AU - Füzesi, András AU - Bajnóczi, Bernadett AU - Szabó, Máté Zoltán AU - Sipos, György AU - May, Zoltán ED - Barna, Judit Eszter ED - Szalontai, Csaba TI - Egy különleges neolitikus agyagtábla vizsgálata T2 - NRInfo 2022 PB - Magyar Nemzeti Múzeum CY - Budapest PY - 2023 SP - 106 EP - 107 PG - 2 UR - https://m2.mtmt.hu/api/publication/34152722 ID - 34152722 LA - Hungarian DB - MTMT ER - TY - CHAP AU - Bajnóczi, Bernadett AU - Szabó, Máté Zoltán AU - Tóth, Mária TI - 7.3. X-ray diffraction analysis of the pottery from the Mödling region T2 - Mödling–Jennyberg. A Hilltop Settlement of the Boleráz and Leithaprodersdorf Cultures PB - Martin Opitz Kiadó CY - Budapest SN - 9786156388421 PY - 2023 SP - 660 EP - 666 PG - 7 UR - https://m2.mtmt.hu/api/publication/34146868 ID - 34146868 LA - English DB - MTMT ER -