TY - JOUR AU - Zajzon, Norbert AU - Topa, Boglárka Anna AU - Biró, Máté AU - Leskó, Máté Zsigmond TI - Fluoreszkáló szfaleritek Mežicáról (Szlovénia) JF - TERTIARY AND QUATERNARY STRATA J2 - TQ STRATA VL - 2 PY - 2024 SP - 54 EP - 55 PG - 2 SN - 3004-2275 UR - https://m2.mtmt.hu/api/publication/34766299 ID - 34766299 LA - Hungarian DB - MTMT ER - TY - GEN AU - Raucsikné Varga, Andrea Beáta AU - Raucsik, Béla AU - Zajzon, Norbert AU - Topa, Boglárka Anna AU - Pál-Molnár, Elemér TI - Lóczy nyomában a Hegyes-hegységben (Erdélyi-középhegység, Románia): lencsék, gömbök, golyók mint „ásvány-lelhelyek” PY - 2024 UR - https://m2.mtmt.hu/api/publication/34532426 ID - 34532426 AB - Már Lóczy Lajos felhívta a figyelmet a „Hegyes-Drocsa hegység” ásványlelhelyeire az 1876-ban megjelent írásában. Ménestől Konopig a „gneisz-granit tömegben” kontakt ásványok sorát figyelte meg. Sugaras vagy oszlopos epidotot, oktaéderes magnetitet, amfibolt, turmalint, kloritot és hematitlemezkéket említett. Előadásunkban a területen végzett kutatásunk ásványtani eredményeit mutatjuk be, kitérve a magmás–hidrotermás és a metaszomatikus (greizenesedés) folyamatok szerepére a látványos ásványegyüttesek létrehozásában. LA - Hungarian DB - MTMT ER - TY - CONF AU - Topa, Boglárka Anna AU - Mádai, Ferenc AU - Zajzon, Norbert AU - Sibila, Borojević Šoštarić AU - Gabriela, Paszkowska AU - Nils, Jansson TI - TIMREX – a new MSc programme in the field of mineral exploration T2 - Abstract Volume PY - 2023 SP - 12 UR - https://m2.mtmt.hu/api/publication/34286384 ID - 34286384 LA - English DB - MTMT ER - TY - CONF AU - Zajzon, Norbert AU - Mádai, Ferenc AU - Topa, Boglárka Anna TI - UNEXMIN, UNEXUP and ROBOMINERS: innovative ways for raw materials exploration and resource extraction T2 - Abstract Volume PY - 2023 SP - 28 UR - https://m2.mtmt.hu/api/publication/34286255 ID - 34286255 LA - English DB - MTMT ER - TY - JOUR AU - Zajzon, Norbert AU - Topa, Boglárka Anna AU - Papp, Richárd Zoltán AU - Aaltonen, Jussi AU - Almeida, José Miguel AU - Almeida, Carlos AU - Martins, Alfredo AU - Bodó, Balázs AU - Henley, Stephen AU - Pinto, Márcio Tameirão AU - Žibret, Gorazd TI - Underwater measurements with UX robots; a new and available tool developed by UNEXUP JF - ADVANCES IN GEOSCIENCES J2 - ADV GEOSCI VL - 62 PY - 2023 SP - 1 EP - 10 PG - 10 SN - 1680-7340 DO - 10.5194/adgeo-62-1-2023 UR - https://m2.mtmt.hu/api/publication/34155591 ID - 34155591 AB - Abstract. The UNEXMIN (Horizon 2020) and UNEXUP (EIT RawMaterials)projects developed a novel technology to send robots and even autonomouslydeliver optical images, 3D maps and other georeferenced scientific data fromflooded underground environments, like abandoned mines, caves or wells. Theconcept turned into a market ready solution in seven years, where the lastfew years of field trials of the development beautifully demonstrating thetechnology's premier capabilities. Here in this paper, we focus on the widevariety of environments, circumstances and measurements where the UNEXMINtechnology can be the best solution or the only solution to deliver certainresearch or engineering data. These are obtained from both simple andcomplex environments like different mines and caves, small and largecavities, long and tight tunnels and shafts, different visibilityconditions, even different densities of the liquid medium where UX robotsoperated. LA - English DB - MTMT ER - TY - JOUR AU - Raucsikné Varga, Andrea Beáta AU - Pozsár, Attila AU - Zajzon, Norbert AU - Topa, Boglárka Anna AU - Benkó, Zsolt AU - Pál-Molnár, Elemér AU - Raucsik, Béla TI - Effects of Metasomatism on Granite-Related Mineral Systems: A Boron-Rich Open Greisen System in the Highiş Granitoids (Apuseni Mountains, Romania) JF - MINERALS J2 - MINERALS-BASEL VL - 13 PY - 2023 IS - 8 PG - 21 SN - 2075-163X DO - 10.3390/min13081083 UR - https://m2.mtmt.hu/api/publication/34106029 ID - 34106029 N1 - This research was financially supported by the National Research, Development, and Innovation Fund (grant numbers K 108375 and K 131690). AB - Greisenization is typically linked with highly fractionated granites and is often associated with hydrothermal vein systems. Late to postmagmatic metasomatic processes involve the enrichment of volatile components such as boron and halogens as well as several metallic elements. The purpose of this study is to reveal the main metasomatic effects and paragenetic sequences of the related mineralizations in Highiş granitoids, Romania. In a natural outcrop, more than 30 samples were collected from granitoids, felsic veins, and country rocks. We carried out a detailed mineralogical and petrological characterization of carefully selected samples using X-ray powder diffractometry, electron microprobe analysis, and microscopic methods together with K–Ar ages of whole rocks and K-bearing minerals. Several characteristic features of albitization, sericitization, tourmalinization, epidotization, and hematitization were recognized in the studied samples. Crystallization of quartz, K-feldspar, and magnetite represents the first stage during the magmatic-hydrothermal transition. The mineral assemblage of albite, sericite, schorl, and quartz originates from the early and main stages of greisenization. While the subsequent mineral assemblages, which predominantly include dravite, specular hematite, and epidote, are closely related to the late vein-depositing stage. We propose that the study area could belong to a boron-rich open greisen system in the apical portion of Guadalupian A-type granite. Based on a new hypothesis, the previously published Permian crystallization ages (between ~272 Ma and ~259 Ma) could be homogenized and/or partially rejuvenated during the hydrothermal mineralization processes due to uraniferous vein minerals. Additionally, the Highiș granite-related system suffered a Cretaceous thermal overprint (between ~100 Ma and ~96 Ma). The results may help to understand the evolution of highly evolved granite intrusions worldwide and improve our knowledge of the effect of hydrothermal mineralization processes on the emplacement ages. LA - English DB - MTMT ER - TY - CONF AU - Zajzon, Norbert AU - Topa, Boglárka Anna AU - Papp, Richárd Zoltán AU - Jussi, Aaltonen AU - José, Almeida AU - Balázs, Bodó AU - Stephen, Henley AU - Marcio, Pinto AU - Gorazd, Zibret TI - Underwater measurements with UX robots; a new and available tool developed by UNEXUP T2 - EGU General Assembly 2023: Abstracts PB - European Geosciences Union (EGU) C1 - München PY - 2023 SP - EGU23-17279 DO - 10.5194/egusphere-egu23-17279 UR - https://m2.mtmt.hu/api/publication/33778888 ID - 33778888 LA - English DB - MTMT ER - TY - JOUR AU - Rostási, Ágnes AU - Rácz, Kornél AU - Fodor, Melinda AU - Topa, Boglárka Anna AU - Molnár, Zsombor AU - Weiszburg, Tamás AU - Pósfai, Mihály TI - Pathways of carbonate sediment accumulation in a large, shallow lake JF - FRONTIERS IN EARTH SCIENCE J2 - FRONT EARTH SC-SWITZ VL - 10 PY - 2022 PG - 18 SN - 2296-6463 DO - 10.3389/feart.2022.1067105 UR - https://m2.mtmt.hu/api/publication/33369185 ID - 33369185 N1 - ELKH-PE Air Chemistry Research Group, Veszprém, Hungary ELKH-PE Environmental Mineralogy Research Group, Veszprém, Hungary Research Institute of Biomolecular and Chemical Engineering, University of Pannonia, Veszprém, Hungary Institute of Mineralogy and Geology, University of Miskolc, Miskolc, Hungary Department of Mineralogy, Eötvös Loránd University, Budapest, Hungary Export Date: 10 January 2023 Correspondence Address: Rostási, A.; ELKH-PE Air Chemistry Research GroupHungary; email: rostasi.agnes@mk.uni-pannon.hu AB - Since carbonate formation is an important process linking inorganic and biological components of freshwater ecosystems, we characterized the formation of modern carbonate sediments in a large, shallow, calcareous lake (Lake Balaton in Hungary). We measured the amount of allochtonous mineral particles delivered to the lake by tributaries and through the atmosphere over a 2-year period, and estimated the mass of carbonate minerals that precipitated from lakewater. Chemical and structural features of mineral particles from various sources were also studied. Both the mineralogical character and the amount of particles delivered by streams and through the atmosphere were similar, and formed a minor fraction of the annual sediment increment (∼5%–6% by mass). Since the watercourses feeding the lake had high concentrations of Ca2+, Mg2+, and HCO3− (with a Mg/Ca mol ratio ranging from 1 to 4), Mg-bearing calcite (with 2–17 mol% MgCO3) was found to continually precipitate in the lake. According to X-ray powder diffraction measurements, the Mg content of calcite increased from West to East, in parallel with changes in water chemistry. Dolomite was detected as a minor phase, and in the eastern part of the lake it typically produced a split 104 peak in X-ray diffractograms, suggesting two distinct sources: stoichiometric dolomite was allochtonous, whereas a Ca-rich protodolomite fraction formed in the lake. Mg-bearing calcite precipitating in the lake was found by far the largest contributor to sediment formation, with an estimated annual accumulation of about 0.75–0.9 mm consolidated sediment; thus, ∼89% of the currently forming sediment consists of autochtonous carbonate. In addition to providing new estimates for the rates of accumulation of distinct sediment fractions, our results also provide a baseline for further studies on the retention and release of nutrients by sediment minerals. LA - English DB - MTMT ER - TY - CHAP AU - Bárány, Bence AU - Pintér, Judit Mária AU - Zajzon, Norbert AU - Papp, Richárd Zoltán AU - Topa, Boglárka Anna ED - Pintér, Judit Mária TI - Unexmin projektben fejlesztett víz alatti felderítő robot műszerezése T2 - Elektrotechnikai és Elektronikai Szeminárium 2022: konferencia előadások publikációi PB - Miskolci Egyetem Gépészmérnöki és Informatikai Kar, Fizikai és Elektrotechnikai Intézet, Elektrotechnikai és Elektronikai Intézeti Tanszék CY - Miskolc-Egyetemváros SN - 9789633582794 PY - 2022 SP - 18 EP - 26 PG - 9 UR - https://m2.mtmt.hu/api/publication/33294970 ID - 33294970 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Papp, Richárd Zoltán AU - Topa, Boglárka Anna AU - Zajzon, Norbert TI - Study on andorite-series minerals from Meleg Hill, Velence Mts., Hungary JF - FÖLDTANI KÖZLÖNY J2 - FÖLDTANI KÖZLÖNY VL - 152 PY - 2022 IS - 3 SP - 201 EP - 212 PG - 12 SN - 0015-542X DO - 10.23928/foldt.kozl.2022.152.3.201 UR - https://m2.mtmt.hu/api/publication/33136932 ID - 33136932 N1 - Export Date: 23 February 2023 Correspondence Address: Papp, R.Z.; University of Miskolc, Hungary; email: askprz@uni-miskolc.hu AB - During the last decades, different sulphosalts were observed in several samples that were investigated from the Meleg hill, Velence Mts. The investigated sample of this study was collected from the less studied north-eastern, stibnite-rich part of the hydrothermal breccia at the Meleg Hill. Based on the results of electron microprobe analysis, we found that the sample contained two sulphosalt minerals of the andorite series that have not been described from Hungary before. The andorite series is a subgroup of the lillianite homologous series. The individual minerals, andorite VI and roshchinite, within the andorite series were identified on the basis of their chemical composition and the andorite substitution percentage (L%). Andorite VI has Ag1.06Cu0.04Pb0.80Sb2.49Bi0.22As0.3S6 average chemical formula (normalized to 6 sulphur atoms) and L%=102.65–109.84, whereas roshchinite has Ag17.23Cu0.53Pb10.4Hg0.04Zn0.04Fe0.02Sb39.73Bi5.52As5.98S96 average chemical formula (normalized to 96 sulphur atoms) and L% = 119.52–123.48. Our results suggest that the formerly used comparative ternary diagrams of the system (Ag2S + Cu2S)–(Sb2S3 + Bi2S3 + As2S3)–(PbS + HgS + FeS + ZnS + CdS) is not adequate to differentiate the andorite-series minerals from each other, due to the highly variable element substitution of Me+, Me2+ and Me3+ cations. The andorite substitution percentage (L%) and the andorite homologue order value (N) are always necessary to calculate to distinguish the mineral species. LA - English DB - MTMT ER -