{"id":20077,"date":"2019-07-17T08:44:23","date_gmt":"2019-07-17T06:44:23","guid":{"rendered":"http:\/\/karmaka.de\/?p=20077"},"modified":"2019-07-17T08:49:17","modified_gmt":"2019-07-17T06:49:17","slug":"the-fukang-pallasite-characterization-and-implications-for-the-history-of-the-main%e2%80%90group-parent-body","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=20077","title":{"rendered":"The Fukang pallasite: Characterization and implications for the history of the Main\u2010group parent body"},"content":{"rendered":"\n<p>Daniella N. Della Giustina, Namrah Habib, Kenneth J. Domanik, Dolores H. Hill, Dante S. Lauretta, Yulia S. Goreva, Marvin Killgore, Yang Hexiong, Robert T. Downs <\/p>\n\n\n\n<p>Meteoritics &amp; Planetary Science<br>\nFirst Published:  16 July 2019<\/p>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/onlinelibrary.wiley.com\/doi\/full\/10.1111\/maps.13313\" target=\"_blank\"><strong>LINK<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;We report the results of a study of the Fukang pallasite that includes measurements of bulk composition, mineral chemistry, mineral structure, and petrology. Fukang is a Main\u2010group pallasite that consists of semiangular olivine grains (Fo 86.3) embedded in an Fe\u2010Ni matrix with 9\u201310 wt% Ni and low\u2010Ir (45 ppb). Olivine grains sometimes occur in large clusters up to 11 cm across. The Fe\u2010Ni phase is primarily kamacite with accessory taenite and plessite. Minor phases include schreibersite, chromite, merrillite, troilite, and low\u2010Ca pyroxene. We describe a variety of silicate inclusions enclosed in olivine that contain phases rarely or not previously reported in Main\u2010group pallasites, including clinopyroxene (augite), tridymite, K\u2010rich felsic glass, and an unknown Ca\u2010Cr silicate. Pressure constraints determined from tridymite (&lt;0.4 GPa), two\u2010pyroxene barometry (0.39 \u00b1 0.07 GPa), and geophysical calculations that assume pallasite formation at the core\u2013mantle boundary (CMB), provide an upper estimate on the size of the Main\u2010group parent body from which Fukang originated. We conclude that Fukang originated at the CMB of a large differentiated planetesimal 400\u2013680 km in radius.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Daniella N. Della Giustina, Namrah Habib, Kenneth J. Domanik, Dolores H. Hill, Dante S. Lauretta, Yulia S. Goreva, Marvin Killgore, Yang Hexiong, Robert T. Downs Meteoritics &amp; Planetary Science First Published: 16 July 2019 LINK&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2583,810,2580],"tags":[3235,5096,2643,1894,4276],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/20077"}],"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=20077"}],"version-history":[{"count":2,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/20077\/revisions"}],"predecessor-version":[{"id":20081,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/20077\/revisions\/20081"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=20077"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=20077"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=20077"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}