LINK<\/strong><\/a><\/p>\n\n\n\n“We report the results of the complex study of the bulk interior of Bursa L6 ordinary chondrite using optical microscopy, scanning electron microscopy with energy dispersive spectroscopy, electron microprobe analysis (EMPA), X\u2010ray diffraction (XRD), magnetization measurements, and M\u00f6ssbauer spectroscopy. The main and minor iron\u2010bearing phases and their chemical compositions were determined by these techniques. The detected iron\u2010bearing phases in the bulk interior of Bursa L6 are the following: olivine; orthopyroxene; Ca\u2010rich clinopyroxene; troilite; chromite; hercynite; ilmenite; the \u03b12\u2010Fe(Ni, Co), \u03b1\u2010Fe(Ni, Co), and \u03b3\u2010Fe(Ni, Co) phases; and ferrihydrite resulting from meteorite terrestrial weathering. Using the EMPA, the values of fayalite and ferrosilite were obtained as ~25.2% and ~21.4%, respectively. The unit cell parameters for silicate crystals were determined from XRD, then the Fe2+ and Mg2+ occupations of the M1 and M2 sites in these crystals were estimated. Further calculations of the ratios of the Fe2+ occupancies in the M1 and M2 sites in olivine and orthopyroxene based on XRD and M\u00f6ssbauer spectroscopy appeared to be in a good agreement. The temperatures of equilibrium cation distributions for olivine and orthopyroxene obtained from these techniques are consistent: 623 K (XRD) and 625 K (M\u00f6ssbauer spectroscopy) for olivine and 1138 K (XRD) and 1122 K (M\u00f6ssbauer spectroscopy) for orthopyroxene.”<\/p>\n","protected":false},"excerpt":{"rendered":"
Alevtina A. Maksimova, Evgeniya V. Petrova, Andrey V. Chukin, Ozan Unsalan, \u00c1bel Szab\u00f3, Zolt\u00e1n Dankh\u00e1zi, Israel Felner, Dmitry A. Zamyatin, Ern\u0151 Kuzmann, Zolt\u00e1n Homonnay, Michael I. Oshtrakh Meteoritics & Planetary ScienceVersion of Record online: 20…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23,7],"tags":[5816,2694,3188,595,1807,2693],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/25742"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=25742"}],"version-history":[{"count":2,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/25742\/revisions"}],"predecessor-version":[{"id":25744,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/25742\/revisions\/25744"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25742"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25742"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25742"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}