Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 240, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2020.118590
Keywords
Bursa meteorite; Fourier transform infrared spectroscopy; Raman spectroscopy; Maskelynite; Ringwoodite; Olivine; Shock stage
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Funding
- EgeUniversity ScientificResearch Projects Coordination Unit [17-FEN-050, MFAG/113F035]
- Scientific and Technological Research Council of Turkey (TUBITAK)
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Olivine-ringwoodite and plagioclase-maskelynite transformation mechanisms in the Bursa L6 chondrite were determined by Raman and Attenuated Total Reflectance (ATR)-Fourier Transform Infrared (FTIR) spectroscopic techniques. Forsterite compositionwas estimated to be 75% by using Raman and IR correlation data. Possible high impact shock pressure for Bursa meteoritewas found to be at least 64.9 GPa. Besides, based on the olivine doublet (820 and 852 cm(-1)) and Full Width at Half Maximum data (similar to 20 and similar to 60 cm(-1), respectively) for maskelynite (509 and 580 cm(-1)) observed in the Raman spectrum, we assigned the shock stage of this meteorite as at least S5, for the first time. Moreover, previously reported hypervelocity impact experiments also supported this assignment. (c) 2020 Elsevier B.V. All rights reserved.
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