Contacts

Place and date of birth

Budapest, 1985

Qualifications

Employment

2014- HAS Research Centre for Astronomy and Earth Earth Sciences, Institute for Geological and Geochemical Research

Language knowledge

Main fields of research

Biomineralisation, Mn-Fe ore deposites, meteorite research (aquaeous alteration, thermal metamorphism, shock metamorphism)
2022 1st January -2025 30th November: Participation in the NKFIH K-138594 OTKA project which is supervised by Ákos Kereszturi, in collaboration with researchers of CSFK and ATOMKI. In this project, we simulate effect of space weathering by irradiation of meteorites and terrestrial analogues (gneiss, lehrzolites). The mineralogical changes after the irradiations are stusdied by Raman, FTIR spectroscopy (FWHM and peak position changes), and microXRD (d value and and FWHM change). The chemical changes in minerals after the irradiations are analysed by LV-SEM as follows: decrease of Mg in Mg-bearing minerals, change of Na and K in feldspars. This speace weathering simuluation supports well the future space missions.

Research projects

Outstanding results

I investigated Cryogenic postglacial transition layer from NW-Namibia in my PhD project, where I used mineralogical and geochemical methods to give paleoenvironmental reconstruction and search for possible impact ejecta, and for classification biomineralization of biomats of chemolithotroph iron-oxidizing bacteria. Since 12 years shock and thermal metamorphism of ordinary chondrites by mineral spectroscopy. Currently I study aqueous alteration of CV3 chondrites and Martian meteorites, and I take part in Úrkút geobiomineralization project. We investigate in collaboration chinese, brazilian (and earlier iranian) Mn- and Mn-Fe ore deposites.

Study trips

2017.12., 2018.07., 2019.06.: SSHADE FTIR (Grenoble, IPAG)
Sept –Dec 2016: Eötvös Scholarship (MAEÖ2016_1) – Secondary alteration of Martian meteorites - National University of Technology Athens, Greece
Feb 2015: E-COST-STSM TD1308 research grant - Raman spectroscopy and SEM/BSE-EDX analyses of Martian meteorites - National University of Technology Athens, Greece
Nov 2013 Travel support/NIPR Symposium - Tokyo, Japan
Nov 2013 Visitor researcher Okayama University of Science, Department of Biosphere-Geosphere Science Okayama-shi, Japan
Oct 2013 "student support" Workshop on Planetesimal Formation and Differentiation 2013 - Carnegie Institution, Washington, USA

Membership of scientific and professional organizations

Science Progress (2021) (1)
Journal of Petroleum Science and Engineering (2020) (1)
Journal of Geochemical Exploration (2019) (1)
Modern Geográfia (2018) (1)
Planetary and Space Science (2014, 2015) (2)

Conference organization

participitation as assistant inoroganizing EANA16 and student assistant in EGU2011

Research grants, scholarships

Sept –Dec 2016: Eötvös Scholarship (MAEÖ2016_1) – Secondary alteration of Martian meteorites - National University of Technology Athens, Greece
Feb 2015: E-COST-STSM TD1308 research grant - Raman spectroscopy and SEM/BSE-EDX analyses of Martian meteorites - National University of Technology Athens, Greece

Awards

Prizes won at scientific competitions

2 ^nd place at Geology Heritage Competition for Students in Budapest, (Hungary), (2004)
4^th place at the AAPG European Region Conference of students held in Prague (Czech Republic), (2008)
2^nd place at National Conference of the Young Hungarian Environment Scientists, held in College of Nyíregyháza (Hungary), 2008

Teaching

International connections

Publications

Selected publications of the last 5 years

Gyollai, I., Biri, S., Juhász, Z., Király, C., Pál, B. D., Rácz, R., ... & Kereszturi, Á. (2024). Irradiation induced mineral changes of NWA10580 meteorite determined by infrared analysis. Astronomy & Astrophysics, 683, A162.
Gyollai, I., Chatzitheodoridis, E., Kereszturi, Á., & Szabó, M. (2023). Multiple generation magmatic and hydrothermal processes in a Martian subvolcanic environment based on the analysis of Yamato‐000593 nakhlite meteorite. Meteoritics & Planetary Science, 58(2), 218-240.
Polgári, M., & Gyollai, I. (2022). Comparative study of formation conditions of Fe-Mn ore microbialites based on mineral assemblages: A critical self-overview. Minerals, 12(10), 1273.
Polgári, M., & Gyollai, I. (2021). Geochemical constraints on the element enrichments of microbially mediated manganese and iron ores–An overview. Ore Geology Reviews, 136, 104203.