Characterization of the matrix and fusion crust of the recent meteorite fall Ozerki L6

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Maksimova , A A , Petrova , E V , Chukin , A V , Karabanalov , M S , Felner , I , Gritsevich , M & Oshtrakh , M I 2020 , ' Characterization of the matrix and fusion crust of the recent meteorite fall Ozerki L6 ' , Meteoritics and Planetary Science , vol. 55 , no. 1 , pp. 231-244 . https://doi.org/10.1111/maps.13423

Title: Characterization of the matrix and fusion crust of the recent meteorite fall Ozerki L6
Author: Maksimova, A. A.; Petrova, E. V.; Chukin, A. V.; Karabanalov, M. S.; Felner, I.; Gritsevich, M.; Oshtrakh, M. I.
Contributor organization: Department of Physics
Date: 2020-01
Language: eng
Number of pages: 14
Belongs to series: Meteoritics and Planetary Science
ISSN: 1086-9379
DOI: https://doi.org/10.1111/maps.13423
URI: http://hdl.handle.net/10138/323653
Abstract: We studied the interior and the fusion crust of the recently recovered Ozerki L6 meteorite using optical microscopy, scanning electron microscopy (SEM) with energy dispersive spectroscopy, X-ray diffraction (XRD), magnetization measurements, and Mossbauer spectroscopy. The phase composition of the interior and of the fusion crust was determined by means of SEM, XRD, and Mossbauer spectroscopy. The unit cell parameters for silicate crystals were evaluated from the X-ray diffractograms and were found the same for the interior and the fusion crust. Magnetization measurements revealed a decrease of the saturation magnetic moment in the fusion crust due to a decrease of Fe-Ni-Co alloy content. Both XRD and Mossbauer spectroscopy show the presence of magnesioferrite in the fusion crust. The temperatures of cation equilibrium distribution between the M1 and M2 sites in silicates calculated using the data obtained from XRD and Mossbauer spectroscopy appeared to be in a good consistency: 553 and 479 K for olivine and 1213 and 1202 K for orthopyroxene.
Subject: X-RAY-DIFFRACTION
ORDINARY CHONDRITES
MOSSBAUER-SPECTROSCOPY
THERMODYNAMIC PROPERTIES
ORDER-DISORDER
ORTHO-PYROXENE
TSAREV L5
114 Physical sciences
Peer reviewed: Yes
Usage restriction: openAccess
Self-archived version: acceptedVersion


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