Search Results - "Ildikó Gyollai"

Comparison of two different infrared spectral analysis based evaluation of impact induced shock events of the Chelyabinsk meteorite by Kereszturi, Ákos, Gyollai, Ildikó, Szabó, Máté, Skultéti, Ágnes

“…Shock metamorphic processes in minerals were observed in the recently fallen Chelyabinsk meteorite and compared with two infrared laboratory methods: DRIFT and…”
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Comparative Study of Formation Conditions of Fe-Mn Ore Microbialites Based on Mineral Assemblages: A Critical Self-Overview by Márta Polgári, Ildikó Gyollai

“…The role of biogenicity in the mineral world is larger than many might assume. Biological processes and physical and chemical processes interact both at the…”
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Microbial metallogenesis of Cryogenian manganese ore deposits in South China by Yu, Wenchao, Polgári, Márta, Gyollai, Ildikó, Fintor, Krisztián, Szabó, Máté, Kovács, Ivett, Fekete, József, Du, Yuansheng, Zhou, Qi

“…•Sturtian-Marinoan interglacial Datangpo Formation (Guizhou, South China) was studied.•Detailed petrographic, mineralogical and geochemical analyses were done…”
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Microbially Mediated Ore-Forming Processes and Cell Mineralization by Polgári, Márta, Gyollai, Ildikó, Fintor, Krisztián, Horváth, Henrietta, Pál-Molnár, Elemér, Biondi, João Carlos

“…Sedimentary black shale-hosted manganese carbonate and oxide ores were studied by high-resolution detailed optical and cathodoluminescence microscopy, Raman…”
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Biogenesis of the Neoproterozoic kremydilite manganese ores from Urucum (Brazil) – A new manganese ore type by Biondi, Joăo Carlos, Polgári, Márta, Gyollai, Ildikó, Fintor, Krisztián, Kovács, Ivett, Fekete, József, Mojzsis, Stephen J.

“…[Display omitted] •Urucum Mn deposit formed in an Ediacaran marginal basin with more than 600 Mt of ore formed from manganiferous microbialite.•Kremydilite is…”
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Microbially-induced K enrichments in hydrothermally altered andesitic tuffs by Polgári, Márta, Nagy, Béla, Fintor, Krisztián, Gyollai, Ildikó, Kovács, Ivett, Szabó, Máté, Mojzsis, Stephen

“…[Display omitted] •Anomalous K enrichment in Neogene andesitic tuffs are biologically mediated.•Three generations of K-feldspars are distinguished.•Bioforms in…”
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Microbial contribution to the formation of the Carboniferous sedimentary manganese deposits in northwestern China by Dong, Zhi-Guo, Zhang, Bang-Lu, Gyollai, Ildikó, Fintor, Krisztián, Szabó, Máté, Kovács, Ivett, Gao, Jun, Zhang, Lian-Chang, Polgári, Márta, Wang, Chang-Le

“…[Display omitted] •Cyclicicites of biogenic minerals were identified by Raman spectroscopy.•Primary accumulation and diagenetic transformation of Mn were…”
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Bacteria-Driven Fossil Ecosystems as Paleoindicators of Active Continental Margins and the Role of Carbonate Sediment-Hosted Vents in Geodynamic Reconstructions by László Bujtor, Ildikó Gyollai, Máté Szabó, Ivett Kovács, Márta Polgári

“…Continental rifting of the Tisza microplate started during the Late Jurassic and resulted in phreatic eruptions, peperite, and the construction of a volcanic…”
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Mineral and chemostratigraphy of a Toarcian black shale hosting Mn-carbonate microbialites (Úrkút, Hungary) by Polgári, Márta, Hein, James R., Bíró, Lóránt, Gyollai, Ildikó, Németh, Tibor, Sajgó, Csanád, Fekete, József, Schwark, Lorenz, Pál-Molnár, Elemér, Hámor-Vidó, Mária, Vigh, Tamás

“…Toarcian black shale that hosts Mn-carbonate microbialites at Úrkút, Hungary was investigated by mineralogical, inorganic, and organic geochemical methods for…”
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Raman spectroscopy analysis of artificial space weathering effects of NWA 10580 CO3 meteorite by Kereszturi, Ákos, Biri, Sándor, Gyollai, Ildikó, Juhász, Zoltán, Király, Csilla, Rácz, Richárd, Rezes, Dániel, Sulik, Béla, Szabó, Máté, Szalai, Zoltán, Szávai, Péter, Szklenár, Tamás

“…A medium‐grade, poorly weathered CO3‐type meteorite was subjected to artificial space weathering by 1 keV protons in three subsequent steps, with gradually…”
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Mineralized biosignatures in ALH-77005 Shergottite - Clues to Martian Life? by Gyollai, Ildikó, Polgári, Márta, Bérczi, Szaniszló, Gucsik, Arnold, Pál-Molnár, Elemér

“…The ALH-77005 Martian meteorite was found in Allan Hills on Antarctica during the Japanese National Institute of Polar Research (1977-1978) mission. One thin…”
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Microbial mediation of textures and minerals – terrestrial or parent body processes? by Polgári, Márta, Gyollai, Ildikó, Bérczi, Szaniszló, Veres, Miklós, Gucsik, Arnold, Elemér, Pál-Molnár

“…Evolution of chondritic parent body is influenced by thermal, impact metamorphism and aqueous alteration, studied in Mező-Madaras, Knyahinya, Mócs and…”
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Comparison of research methods and interpretation of ALH-84001 (McKay et al. 1996, Science and studies based on Science publication by Thomas-Keprta et al. 2000 GCA, Thomas-Keprta et al. 2001 PNAS) and ALH-77005 (Gyollai et al. 2019 Open Astronomy) by Gyollai, Ildikó, Bérczi, Szaniszló, Polgári, Márta

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Cathodoluminescence microscopy and spectroscopy of forsterite from Kaba meteorite: An application to the study of hydrothermal alteration of parent body by Gucsik, Arnold, Endo, Taro, Nishido, Hirotsugu, Ninagawa, Kiyotaka, Kayama, Masahiro, Bérczi, Szaniszló, Nagy, Szabolcs, Ábrahám, Péter, Kimura, Yuki, Miura, Hitoshi, Gyollai, Ildikó, Simonia, Irakli, Rózsa, Péter, Posta, József, Apai, Dániel, Mihályi, Krisztián, Nagy, Mihály, Ott, Ulrich

“…Highly forsteritic olivine (Fo: 99.2–99.7) in the Kaba meteorite emits bright cathodoluminescence (CL). CL spectra of red luminescent forsterite grains have…”
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A Combined Petrographic and Micro-Raman Study of Meteoritic Microdiamond in ALH-77257 Ureilite and ALH-78113 Aubrite by Gyollai, Ildikó, Gucsik, Arnold, Veres, Miklós, Koós, Margit, Nagy, Szabolcs, Bérczi, Szaniszló

“…Two diamond-bearing meteorites (ALH-77257 and ALH-78113) were investigated by petrographic microscope and micro-Raman spectroscopy. The meteoritic diamonds can…”
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Raman–Infrared Spectral Correlation of an Artificially Space-Weathered Carbonaceous Chondrite Meteorite by Ildiko Gyollai, Sándor Biri, Zoltán Juhász, Csilla Király, Richárd Rácz, Dániel Rezes, Béla Sulik, Máté Szabó, Zoltán Szalai, Péter Szávai, Tamás Szklenár, Ákos Kereszturi

“…Raman and infrared measurements of the same locations were conducted on a northwest African (NWA) 10580 CO3 meteorite sample, before and after three proton…”
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Characterization and 10 Be content of iron carbonate concretions for genetic aspects - Weathering, desert varnish or burning: Rim effects in iron carbonate concretions by Polgári, Márta, Bérczi, Szaniszló, Horiuchi, Kazuho, Matsuzaki, Hiroyuki, Kovács, Tibor, Józsa, Sándor, Bendő, Zsolt, Fintor, Krisztián, Fekete, József, Homonnay, Zoltán, Kuzmann, Ernő, Gucsik, Arnold, Gyollai, Ildikó, Kovács, János, Dódony, István

“…The research investigated three iron carbonate (siderite) sedimentary concretions from Nagykovácsi, Úri and Délegyháza, Hungary. To identify possible source…”
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Characterization and 10Be content of iron carbonate concretions for genetic aspects – Weathering, desert varnish or burning: Rim effects in iron carbonate concretions by Polgári, Márta, Bérczi, Szaniszló, Horiuchi, Kazuho, Matsuzaki, Hiroyuki, Kovács, Tibor, Józsa, Sándor, Bendő, Zsolt, Fintor, Krisztián, Fekete, József, Homonnay, Zoltán, Kuzmann, Ernő, Gucsik, Arnold, Gyollai, Ildikó, Kovács, János, Dódony, István

“…The research investigated three iron carbonate (siderite) sedimentary concretions from Nagykovácsi, Úri and Délegyháza, Hungary. To identify possible source…”
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Multiple generation magmatic and hydrothermal processes in a Martian subvolcanic environment based on the analysis of Yamato‐000593 nakhlite meteorite by Gyollai, Ildiko, Chatzitheodoridis, Elias, Kereszturi, Ákos, Szabó, Máté

“…We studied the occurrence of secondary minerals and inferred their formation in the Yamato‐000593 Martian meteorite using multiple technological approaches…”
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Formation and shock impact history of the Csatalja ordinary chondrite by Gyollai, Ildiko, Kereszturi, Ákos, Chatzitheodoridis, Elias, Kereszty, Zsolt, Szabó, Máté, Király, Csilla, Szalai, Zoltan

“…The analysis of the Csatalja H4 chondrite (which was found in August 2012) suggests shock‐related textures and spatial inhomogeneities, indicating a complex…”
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