TY - JOUR AU - Kereszturi, Ákos AU - Blumberger, Z. AU - Józsa, Sándor AU - May, Zoltán AU - Müller, A. AU - Szabó, Máté Zoltán AU - Tóth, Mária TI - Alteration processes in the CV chondrite parent body based on analysis of NWA 2086 meteorite JF - METEORITICS & PLANETARY SCIENCE J2 - METEORIT PLANET SCI VL - 49 PY - 2014 IS - 8 SP - 1350 EP - 1364 PG - 15 SN - 1086-9379 DO - 10.1111/maps.12336 UR - https://m2.mtmt.hu/api/publication/2727407 ID - 2727407 LA - English DB - MTMT ER - TY - JOUR AU - Pillinger, CT AU - Pillinger, JM AU - Johnson, D AU - Greenwood, RC AU - Tindle, AG AU - Jull, Timothy AJ AU - Allen, DH AU - Cunliffe, B TI - The Danebury Iron Age meteorite-An H5 ordinary chondrite "find" from Hampshire, England JF - METEORITICS & PLANETARY SCIENCE J2 - METEORIT PLANET SCI VL - 49 PY - 2014 IS - 6 SP - 946 EP - 957 PG - 12 SN - 1086-9379 DO - 10.1111/maps.12301 UR - https://m2.mtmt.hu/api/publication/2960519 ID - 2960519 LA - English DB - MTMT ER - TY - JOUR AU - Gucsik, Arnold AU - Endo, T AU - Nishido, H AU - Ninagawa, K AU - Kayama, M AU - Bérczi, Szaniszló AU - Nagy, S AU - Ábrahám, Péter AU - Kimura, Y AU - Miura, H AU - Gyollai, Ildikó AU - Simonia, I AU - Rózsa, Péter AU - Posta, József AU - Apai, D AU - Mihályi, K AU - Nagy, M AU - Ott, Ulrich TI - Cathodoluminescence microscopy and spectroscopy of forsterite from Kaba meteorite: An application to the study of hydrothermal alteration of parent body JF - METEORITICS & PLANETARY SCIENCE J2 - METEORIT PLANET SCI VL - 48 PY - 2013 IS - 12 SP - 2577 EP - 2596 PG - 20 SN - 1086-9379 DO - 10.1111/maps.12238 UR - https://m2.mtmt.hu/api/publication/2478826 ID - 2478826 N1 - Department of Geology, University of Johannesburg, 2600 Auckland Park, Johannesburg, South Africa Konkoly Thege Miklos Astronomical Institute, Research Centre for Astronomy and Earth Sciences, Konkoly Thege Miklós út 15-17, Budapest, H-1121, Hungary Department of Biosphere-Geosphere System Science, Okayama University of Science, 1-1 Ridai-cho, Okayama, 700-0005, Japan Department of Applied Physics, Okayama University of Science, 1-1 Ridai-cho, Okayama, 700-0005, Japan Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University, Kagami-yama 1-3-1, Higashi-Hiroshima, Hiroshima, 739-8526, Japan Institute of Physics, Department of Material Physics, Eötvös University, Pázmány P. s. 1/a, Budapest, H-1117, Hungary Department of Mineralogy, Petrology and Geochemistry, University of Szeged, Egyetem utca 2, Szeged, H-6722, Hungary Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan Department of Lithospheric Research, Center for Earth Sciences, University of Vienna, Althanstrasse 14, Vienna, A-1090, Austria School of Graduate Studies of Ilia State University, Tbilisi, Georgia University of Debrecen, Egyetem tér 1, Debrecen, H-4032, Hungary Lunar and Planetary Laboratory, Department of Planetary Sciences, The Arizona University, 1629 E. University Blvd, Tucson, AZ, 85721-0092, United States Reformed College of Debrecen, Kálvin tér 16., Debrecen, H-4026, Hungary Savaria University Center, University of West Hungary, Károlyi Gáspár tér 4, Szombathely, H-9700, Hungary Cited By :7 Export Date: 15 December 2018 CODEN: MPSCF Correspondence Address: Gucsik, A.; Department of Geology, University of Johannesburg, 2600 Auckland Park, Johannesburg, South Africa; email: argu1986@hotmail.com Department of Geology, University of Johannesburg, 2600 Auckland Park, Johannesburg, South Africa Konkoly Thege Miklos Astronomical Institute, Research Centre for Astronomy and Earth Sciences, Konkoly Thege Miklós út 15-17, Budapest, H-1121, Hungary Department of Biosphere-Geosphere System Science, Okayama University of Science, 1-1 Ridai-cho, Okayama, 700-0005, Japan Department of Applied Physics, Okayama University of Science, 1-1 Ridai-cho, Okayama, 700-0005, Japan Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University, Kagami-yama 1-3-1, Higashi-Hiroshima, Hiroshima, 739-8526, Japan Institute of Physics, Department of Material Physics, Eötvös University, Pázmány P. s. 1/a, Budapest, H-1117, Hungary Department of Mineralogy, Petrology and Geochemistry, University of Szeged, Egyetem utca 2, Szeged, H-6722, Hungary Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan Department of Lithospheric Research, Center for Earth Sciences, University of Vienna, Althanstrasse 14, Vienna, A-1090, Austria School of Graduate Studies of Ilia State University, Tbilisi, Georgia University of Debrecen, Egyetem tér 1, Debrecen, H-4032, Hungary Lunar and Planetary Laboratory, Department of Planetary Sciences, The Arizona University, 1629 E. University Blvd, Tucson, AZ, 85721-0092, United States Reformed College of Debrecen, Kálvin tér 16., Debrecen, H-4026, Hungary Savaria University Center, University of West Hungary, Károlyi Gáspár tér 4, Szombathely, H-9700, Hungary Cited By :7 Export Date: 28 December 2018 CODEN: MPSCF Correspondence Address: Gucsik, A.; Department of Geology, University of Johannesburg, 2600 Auckland Park, Johannesburg, South Africa; email: argu1986@hotmail.com Funding details: Japan Society for the Promotion of Science, JSPS, 25800294 Department of Geology, University of Johannesburg, 2600 Auckland Park, Johannesburg, South Africa Konkoly Thege Miklos Astronomical Institute, Research Centre for Astronomy and Earth Sciences, Konkoly Thege Miklós út 15-17, Budapest, H-1121, Hungary Department of Biosphere-Geosphere System Science, Okayama University of Science, 1-1 Ridai-cho, Okayama, 700-0005, Japan Department of Applied Physics, Okayama University of Science, 1-1 Ridai-cho, Okayama, 700-0005, Japan Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University, Kagami-yama 1-3-1, Higashi-Hiroshima, Hiroshima, 739-8526, Japan Institute of Physics, Department of Material Physics, Eötvös University, Pázmány P. s. 1/a, Budapest, H-1117, Hungary Department of Mineralogy, Petrology and Geochemistry, University of Szeged, Egyetem utca 2, Szeged, H-6722, Hungary Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan Department of Lithospheric Research, Center for Earth Sciences, University of Vienna, Althanstrasse 14, Vienna, A-1090, Austria School of Graduate Studies of Ilia State University, Tbilisi, Georgia University of Debrecen, Egyetem tér 1, Debrecen, H-4032, Hungary Lunar and Planetary Laboratory, Department of Planetary Sciences, The Arizona University, 1629 E. University Blvd, Tucson, AZ, 85721-0092, United States Reformed College of Debrecen, Kálvin tér 16., Debrecen, H-4026, Hungary Savaria University Center, University of West Hungary, Károlyi Gáspár tér 4, Szombathely, H-9700, Hungary Cited By :7 Export Date: 29 December 2018 CODEN: MPSCF Correspondence Address: Gucsik, A.; Department of Geology, University of Johannesburg, 2600 Auckland Park, Johannesburg, South Africa; email: argu1986@hotmail.com Funding details: Japan Society for the Promotion of Science, JSPS, 25800294 Funding Agency and Grant Number: Max Planck Society (Germany)Max Planck Society; JSPS Longterm Visiting Professorship (Japan); TAMOP [4.2.2/B-10/1-2010-0024] Funding text: AG was partly supported by Max Planck Society (Germany, 2007-2009) and JSPS Longterm Visiting Professorship (Japan) in 2011/12. Authors express thanks to Profs Sumit Chakraborty, Andreas Pack, and Shogo Tachibana for their useful comments on this paper. Authors are grateful to Mr. Richard William McIntosh (Department of Mineralogy and Geology, University of Debrecen) for checking English of this manuscript. KM was supported by TAMOP 4.2.2/B-10/1-2010-0024 project. AB - Highly forsteritic olivine (Fo: 99.2-99.7) in the Kaba meteorite emits bright cathodoluminescence (CL). CL spectra of red luminescent forsterite grains have two broad emission bands at approximately 630 nm (impurity center of divalent Mn ions) in the red region and above 700 nm (trivalent Cr ions) in the red-IR region. The cores of the grains show CL blue luminescence giving a characteristic broad band emission at 400 nm, also associated with minor red emissions related to Mn and Cr ions. CL color variation of Kaba forsterite is attributed to structural defects. Electron probe microanalyzer (EPMA) analysis shows concentrations of Ca, Al, and Ti in the center of the forsterite grain. The migration of diffusible ions of Mn, Cr, and Fe to the rim of the Kaba meteoritic forsterite was controlled by the hydrothermal alteration at relatively low temperature (estimated at about 250 °C), while Ca and Al ions might still lie in the core. A very unusual phase of FeO (wüstite) was also observed, which may be a terrestrial alteration product of FeNi-metal. © The Meteoritical Society, 2013. LA - English DB - MTMT ER - TY - JOUR AU - Gyollai, Ildikó AU - Gucsik, Arnold AU - Veres, Miklós AU - Koós, Margit AU - Nagy, Sz AU - Bérczi, Szaniszló TI - A Combined Petrographic and Micro-Raman Study of Meteoritic Microdiamond in ALH-77257 Ureilite and ALH-78113 Aubrite JF - SPECTROSCOPY LETTERS J2 - SPECTROSC LETT VL - 45 PY - 2012 IS - 2 SP - 151 EP - 155 PG - 5 SN - 0038-7010 DO - 10.1080/00387010.2011.627527 UR - https://m2.mtmt.hu/api/publication/1898391 ID - 1898391 AB - Two diamond-bearing meteorites (ALH-77257 and ALH-78113) were investigated by petrographic microscope and micro-Raman spectroscopy. The meteoritic diamonds can be found in fractures or veins cross-cutting the original minerals (olivine, pyroxene, feldspar) and inside the host minerals. The micro-Raman spectral features of microdiamonds in two studied meteorites are very similar to each other. The diamond peak was found at 1329 in ALH-77257 and 1332cm 1 in ALH-78113. Hexagonal diamond was not present. However, we observed the D and G bands of graphite or amorphous carbon at 1322 and 1582cm 1 wavenumbers, indicating an origin of the meteoritic microdiamonds by magmatic processes. © 2012 Copyright Taylor and Francis Group, LLC. LA - English DB - MTMT ER - TY - JOUR AU - Nagy, S AU - Józsa, Sándor AU - Gucsik, Arnold AU - Bérczi, Szaniszló AU - Ninagawa, K AU - Nishido, H AU - Veres, Miklós AU - Kereszturi, Ákos AU - Hargitai, Henrik TI - Shock and thermal annealing history of the ALH 77005 Martian meteorite: A micro-Raman spectroscopical investigation JF - CENTRAL EUROPEAN GEOLOGY J2 - CENT EUR GEOL VL - 55 PY - 2012 IS - 1 SP - 33 EP - 48 PG - 16 SN - 1788-2281 DO - 10.1556/CEuGeol.55.2012.1.3 UR - https://m2.mtmt.hu/api/publication/2149903 ID - 2149903 AB - We studied optical microscopic and micro-Raman spectroscopic signatures of shocked olivine from the ALH 77005 Martian meteorite sample. The purpose of this study is to document pressure and temperature-related effects in olivine over the entire sample, which can aid in understanding structural changes due to shock metamorphism and the post-shock thermal annealing processes of lherzolitic Martian meteorites. According to the optical microscope observations, three areas may be discernible in olivine of the ALH 77005 in the vicinity of the melt pocket. The first area is the thermally undisturbed part of a grain, which contains a high density of shock-induced planar microdeformations such as Planar Deformation Features (PDFs) and Planar Fractures (PFs). Compared to the first area, the second area shows less shock-induced microstructures, while the third area is a strongly recrystallized region, but not formed from a melt.A common Raman spectral feature of these olivines is a regular doublet peak centered at 823 and 852 cm-1; additionally, two new peaks at 535 and 755 cm -1 appear in the weakly annealed transition zones. LA - English DB - MTMT ER - TY - JOUR AU - Gucsik, Arnold TI - Micro-Raman study of the Allende meteoritic nanodiamonds: supernova-driven shock wave origin is revisited. JF - CENTRAL EUROPEAN GEOLOGY J2 - CENT EUR GEOL VL - 54 PY - 2011 IS - 3 SP - 261 EP - 270 PG - 10 SN - 1788-2281 DO - 10.1556/CEuGeol.54.2011.3.4 UR - https://m2.mtmt.hu/api/publication/2286301 ID - 2286301 N1 - Hungarian Academy of Sciences Konkoly Observatory, Budapest, Hungary Konkoly-Thege út 15-17, H-1121 Budapest, Hungary Cited By :2 Export Date: 28 December 2018 Correspondence Address: Gucsik, A.; Hungarian Academy of Sciences Konkoly Observatory, Budapest, Hungary AB - I have studied the Raman spectroscopic signatures of nanodiamonds from the Allende meteorite,in which some portions must be of presolar origin as indicated by the isotopic compositions of various trace elements. The spectra of the meteoritic nanodiamonds show a narrow peak at 1326 cm–1 and a broad band at 1590 cm–1. Compared to the intensities of these peaks, the background fluorescence is relatively high. A significant frequency shift from 1332 to 1326 cm–1, peak broadening, andappearance of a new peak at 1590 cm–1 might be due to shock effects during formation of the diamond grains. Such changes may have several origins: an increase in bond length, a change in the electron density function or charge transfer, or a combination of these factors. However, Raman spectroscopy alone does not allow distinguishing between a shock origin of the nanodiamonds and formation by a CVD process, as is favored by most workers. LA - English DB - MTMT ER - TY - JOUR AU - Sakamoto, M AU - Gucsik, Arnold AU - Nishido, H AU - Ninagawa, K AU - Okumura, T AU - Toyoda, S TI - Micro-Raman spectroscopy of anomalous planar microsctructures in quartz from Mt. Oikeyama. Discovery of a probable impact crater in Japan TS - Discovery of a probable impact crater in Japan JF - METEORITICS & PLANETARY SCIENCE J2 - METEORIT PLANET SCI VL - 45 PY - 2010 IS - 1 SP - 32 EP - 42 PG - 11 SN - 1086-9379 DO - 10.1111/j.1945-5100.2009.01003.x UR - https://m2.mtmt.hu/api/publication/1317386 ID - 1317386 N1 - Funding Agency and Grant Number: Japan Promotion of Science Fellowship Program (JSPS) for Foreign Postdoctoral ResearchersMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science Funding text: We thank Takeshi Muramatsu (Iida City Museum) for support and advice during the course of this study. We acknowledge with gratitude the helpful comments and suggestions by Christian Koeberl (University of Vienna, Austria), Henning Dypvik (University of Oslo, Norway), Ulrich Ott (Max Planck Institute for Chemistry, Mainz, Germany), and Paul Buchanan (National Institute of Polar Research. Japan). A. G. was supported by Japan Promotion of Science Fellowship Program (JSPS) for Foreign Postdoctoral Researchers. Authors express grateful thanks to Dr. Ryuichi Shichi (Chubu University) for his gravity data of the Oikeyama area and Asami Osada for Raman spectroscopy in Himeji Analysis and Evaluation Center (Japan). In memoriam Professor Teruo Watanabe (Hokkaido University). LA - English DB - MTMT ER - TY - JOUR AU - Gucsik, Arnold AU - Koeberl, C AU - Brandstätter, F AU - Reimold, WU AU - Libowitzky, E TI - Cathodoluminescence, electron microscopy, and Raman spectroscopy of experimentally shock-metamorphosed zircon JF - EARTH AND PLANETARY SCIENCE LETTERS J2 - EARTH PLANET SC LETT VL - 202 PY - 2002 IS - 2 SP - 495 EP - 510 PG - 16 SN - 0012-821X DO - 10.1016/S0012-821X(02)00754-9 UR - https://m2.mtmt.hu/api/publication/1283179 ID - 1283179 N1 - Institute of Geochemistry, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria Department of Mineralogy, Natural History Museum, A-1014 Vienna, Austria Impact Cratering Research Group, School of Geosciences, University of Witwatersrand, Johannesburg 2050, South Africa Institute of Mineralogy and Crystallography, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria Cited By :20 Export Date: 15 December 2018 Correspondence Address: Koeberl, C.; Institute of Geochemistry, University of Vienna, Althanstrasse 14, Vienna A-1090, Austria; email: christian.koeberl@univie.ac.at AB - Thorough understanding of the shock metamorphic signatures of zircon could be the basis for the use of this mineral as a powerful tool for the study of old, deeply eroded, and metamorphically overprinted impact structures and formations. This study of the cathodoluminescence (CL) and Raman spectroscopic signatures of experimentally (20–60 GPa) shock-metamorphosed zircon single crystals contributes to the understanding of high-pressure microdeformation in zircon. For all samples, an inverse relationship between the brightness of the backscattered electron (BSE) signal and the corresponding cathodoluminescence intensity was observed. The unshocked sample shows crosscutting, irregular fractures. The 20 GPa sample displays some kind of mosaic texture of CL brighter and darker domains, but does not exhibit any shock metamorphic features in BSE or CL images. The 40 GPa sample shows a high density of lamellar features, which might be explained by the phase transformation between zircon- and scheelite-structure phases of zircon and resulting differences in the energy levels of the activator elements. The CL spectra of unshocked and shocked (20, 40, and 60 GPa) zircon samples are dominated by narrow emission lines and broad bands in the region of visible light and in the near-UV range. The emission lines result from rare earth element activators and the broad bands might be associated with lattice defects. Raman spectra revealed that the unshocked and 20 GPa samples represent zircon-structure material, whereas the 40 GPa sample yielded additional peaks with relatively high peak intensities, which are indicative of the presence of the scheelite-type high-pressure phase. The 60 GPa sample has a Raman signature that is similar to that of an amorphous phase, in contrast to the observations of an earlier TEM study that the crystalline scheelite-structure phase is stable at this shock pressure. The 60 GPa Raman signature cannot be explained at this stage. The results show a clear dependence of the CL and Raman properties of zircon on shock pressure, which confirm the possible usage of these methods as shock indicators. LA - English DB - MTMT ER - TY - JOUR AU - Bérczi, Szaniszló AU - Kubovics, Imre AU - Don, Gy AU - Ditrói-Puskás, Zuárd AU - Gál-Sólymos, K AU - Földi, T AU - Solt, P AU - Záray, Gy TI - New studies on meteorites from Hungary: Corrections in the London Meteorite Catalogue. Meteoritics & Planetary Science TS - Meteoritics & Planetary Science JF - METEORITICS & PLANETARY SCIENCE J2 - METEORIT PLANET SCI VL - 36 PY - 2001 SP - 107 SN - 1086-9379 UR - https://m2.mtmt.hu/api/publication/1783722 ID - 1783722 LA - English DB - MTMT ER - TY - JOUR AU - Kubovics, Imre AU - Gálné Sólymos, Kamilla AU - Ditrói-Puskás, Zuárd AU - Bérczi, Szaniszló TI - New results from the Kaba meteorite part I. chondrules JF - ACTA GEOLOGICA HUNGARICA: A QUARTERLY OF THE HUNGARIAN ACADEMY OF SCIENCES J2 - ACTA GEOL HUNG VL - 43 PY - 2000 IS - 4 SP - 477 EP - 492 PG - 16 SN - 0236-5278 UR - https://m2.mtmt.hu/api/publication/1767176 ID - 1767176 AB - The re-examined Kaba meteorite (Hungary) is being investigated by modern research methods. The present report focuses on the EPMA studies of this carbonaceous chondrite, mainly on the chondrules. The textural features, mineralogical and chemical composition of six characteristic types of chondrules, as well as phenocrysts and matrix, indicate an extremely wide temperature range of formation (1973° K-403° K). The multi-stage, selective condensation may have commenced at about 1973° K with the appearance of A12O3, then perovskite and spinel were formed with decreasing temperature. At the end of the process magnetite, maghemite and organic compounds were the condensation products. All of these comprise the almost complete scale of condensation steps. Beside condensation and aggregation, melting and crystallization processes play a role in the chondrule formation. LA - English DB - MTMT ER -