{"id":13915,"date":"2017-10-25T23:57:37","date_gmt":"2017-10-25T22:57:37","guid":{"rendered":"http:\/\/karmaka.de\/?p=13915"},"modified":"2017-11-20T14:59:33","modified_gmt":"2017-11-20T13:59:33","slug":"characterization-of-northwest-africa-6286-and-7857-ordinary-chondrites-using-x-ray-diffraction-magnetization-measurements-and-mossbauer-spectroscopy","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=13915","title":{"rendered":"Characterization of Northwest Africa 6286 and 7857 ordinary chondrites using X-ray diffraction, magnetization measurements and M\u00f6ssbauer spectroscopy"},"content":{"rendered":"<p>A.A. Maksimova, M.I. Oshtrakh, A.V. Chukin, I. Felner, G.A. Yakovlev, V.A. Semionkin<\/p>\n<p>Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, Volume 192, 5 March 2018, Pages 275-284<\/p>\n<p><a href=\"http:\/\/www.sciencedirect.com\/science\/article\/pii\/S1386142517308624\" target=\"_blank\"><strong>LINK<\/strong><\/a><\/p>\n<p>&#8220;Highlights<\/p>\n<p>\u2022    The main and minor iron bearing phases in NWA 6286 and NWA 7857 meteorites<br \/>\n\u2022    Determination of the 57Fe hyperfine parameters for the iron bearing phases<br \/>\n\u2022    Determination of Fe2+ partitioning between the M1 and M2 sites in silicate phases&#8221;<\/p>\n<p>&#8220;Northwest Africa (NWA) 6286 and 7857 meteorites were studied in detail by using optical microscopy, scanning electron microscopy with energy dispersion spectroscopy, X-ray diffraction, magnetization measurements and 57Fe M\u00f6ssbauer spectroscopy with a high velocity resolution. The main and the minor iron-bearing phases were identified in both meteorites. The unit cell parameters as well as Fe2+ and Mg2+ cation distribution were determined for the M1 and M2 sites in silicate microcrystals. Saturation magnetic moments were obtained for both meteorites. M\u00f6ssbauer parameters for the main and the minor iron-bearing microcrystals were estimated and compared for NWA 6286 and NWA 7857 LL6 ordinary chondrites. The Fe2+ and Mg2+ cation partitioning, distribution coefficient and temperature of cation equilibrium distribution were estimated for silicate microcrystals using X-ray diffraction and M\u00f6ssbauer spectroscopy.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A.A. Maksimova, M.I. Oshtrakh, A.V. Chukin, I. Felner, G.A. Yakovlev, V.A. Semionkin Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, Volume 192, 5 March 2018, Pages 275-284 LINK &#8220;Highlights \u2022 The main and minor iron&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24,7],"tags":[3263,3264,1807],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/13915"}],"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=13915"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/13915\/revisions"}],"predecessor-version":[{"id":13916,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/13915\/revisions\/13916"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13915"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=13915"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13915"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}