{"id":34485,"date":"2023-11-03T16:06:49","date_gmt":"2023-11-03T15:06:49","guid":{"rendered":"https:\/\/karmaka.de\/?p=34485"},"modified":"2023-11-03T16:06:50","modified_gmt":"2023-11-03T15:06:50","slug":"chemical-and-genetic-characterization-of-the-ungrouped-pallasite-lieksa","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=34485","title":{"rendered":"Chemical and genetic characterization of the ungrouped pallasite Lieksa<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Emily M. Chiappe, Richard D. Ash, Arto Luttinen, Sari Lukkari, Jukka Kuva, Connor D. Hilton, Richard J. Walker<\/p>\n\n\n\n<p>MAPS<br>Version of Record online: 03 November 2023<\/p>\n\n\n\n<p><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/maps.14095\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/epdf\/10.1111\/maps.14095\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;The meteorite Lieksa was found in 2017 in L\u00f6p\u00f6nvaara, Finland, and later donated to the Finnish Museum of Natural History. Here, we report siderophile element concentrations, genetic isotopic data, and a metal\u2013silicate segregation age for the meteorite. The ~280\u2009g Lieksa is ~80% metal and ~20% silicate and oxide inclusions by volume, with the inclusions consisting primarily of Fe-rich olivine. Due to Lieksa&#8217;s silicate content, coupled with a texture characterized by metal enclosing the silicates, it has been classified as a pallasite. Lieksa&#8217;s olivine and bulk chemical characteristics are distinct from those of the known pallasite and iron meteorite groups, consistent with its classification as ungrouped. The meteorite exhibits a flat, chondrite-normalized highly siderophile element pattern, consistent with an origin as an early crystallization product from a metallic melt with chondritic relative abundances. Molybdenum, Ru, and 183W isotopic data indicate that Lieksa formed in the non-carbonaceous (NC) domain of the solar nebula. Radiogenic 182W abundances for Lieksa yield a model metal\u2013silicate segregation age of 1.5\u2009\u00b1\u20090.8\u2009Myr after calcium-aluminum-rich inclusion formation, which is within the range established for other NC-type pallasite and iron meteorite parent bodies.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Emily M. Chiappe, Richard D. Ash, Arto Luttinen, Sari Lukkari, Jukka Kuva, Connor D. Hilton, Richard J. Walker MAPSVersion of Record online: 03 November 2023 LINK (OPEN ACCESS)PDF (OPEN ACCESS) &#8220;The meteorite Lieksa was found&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[810],"tags":[6522,1894],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/34485"}],"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=34485"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/34485\/revisions"}],"predecessor-version":[{"id":34486,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/34485\/revisions\/34486"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=34485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=34485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=34485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}