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

1A. A. Maksimova,1E. V. Petrova,1A. V. Chukin,1 M. S. Karabanalov,2I. Felner,1,3,4M. Gritsevich,1M. I. Oshtrakh
Meteoritics & Planetary Science (in Press) Link to Article []
1Institute of Physics and Technology, Ural Federal University, Ekaterinburg, 620002 Russian Federation
2Racah Institute of Physics, The Hebrew University, Jerusalem, 91904 Israel
3Department of Physics, University of Helsinki, Gustaf Hällströmin katu 2a, PO Box 64, FI‐00014 Helsinki, Finland
4Finnish Geospatial Research Institute, Geodeetinrinne 2, 02430 Masala, Finland
Published by arrangement with John Wiley & Sons

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 Mössbauer spectroscopy. The phase composition of the interior and of the fusion crust was determined by means of SEM, XRD, and Mössbauer 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 Mössbauer 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 Mössbauer spectroscopy appeared to be in a good consistency: 553 and 479 K for olivine and 1213 and 1202 K for orthopyroxene.


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