{"id":30185,"date":"2022-02-14T17:06:22","date_gmt":"2022-02-14T16:06:22","guid":{"rendered":"https:\/\/karmaka.de\/?p=30185"},"modified":"2022-04-02T08:12:08","modified_gmt":"2022-04-02T07:12:08","slug":"the-famenin-fall-and-other-ordinary-chondrites-intermediate-between-h-and-l-groups","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=30185","title":{"rendered":"The Famenin fall and other ordinary chondrites intermediate between H and L groups<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Hamed Pourkhorsandi, J\u00e9r\u00f4me Gattacceca, Pierre Rochette, Thomas Smith, Lydie Bonal, Massimo D\u2019Orazio, Bertrand Devouard, Corinne Sonzogni, Vinciane Debaille<\/p>\n\n\n\n<p>Meteoritics &amp; Planetary Science<br>accepted for publication, February 2022<\/p>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/www.researchgate.net\/publication\/358566227_The_Famenin_fall_and_other_ordinary_chondrites_intermediate_between_H_and_L_groups\" target=\"_blank\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a rel=\"noreferrer noopener\" href=\"https:\/\/www.researchgate.net\/profile\/Hamed-Pourkhorsandi-2\/publication\/358566227_The_Famenin_fall_and_other_ordinary_chondrites_intermediate_between_H_and_L_groups\/links\/620831cecf7c2349ca0f4ff8\/The-Famenin-fall-and-other-ordinary-chondrites-intermediate-between-H-and-L-groups.pdf\" target=\"_blank\"><strong>PDF (DOWNLOAD)<\/strong><\/a> and <a rel=\"noreferrer noopener\" href=\"https:\/\/hal.archives-ouvertes.fr\/hal-03620610\/document\" target=\"_blank\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p>Update (26 March 2022, published in MAPS): <a rel=\"noreferrer noopener\" href=\"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/maps.13801\" target=\"_blank\"><strong>LINK<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;The Famenin meteorite fell around 08:30 am local time (GMT+4.5) on 27 June 2015 on the roof of a house in Famenin town, NW Iran. A single 640 grams stone was recovered, shattered into several pieces upon impact. The shape of the impact hole and the relative position of the recovered meteorites indicate a N-NW fall direction. Famenin is an ordinary chondrite with well preserved chondrules of various types, (Fe,Ni) metal, troilite, phosphate, and chromite. The organic matter systematics and the olivine and low-Ca compositional distributions (percent mean deviations 18% and 31%, respectively) indicate it is a type 3.4\/3.8 chondrite. Considering the average chemical compositions of olivine (Fa17.5\u00b14.7) and low-Ca pyroxene (Fs16.8\u00b17.5), average Co content of the kamacite (5.6 mgg-1), and Cu\/Ni and Ga\/Ni ratios, Famenin should be classified as an H chondrite. However, saturation magnetization is 26.0 Am2\/kg, indicating a bulk metal content similar to L chondrites. Similarly, the whole rock Ni and Co contents (13073 and 540 \u00b5gg-1, respectively), and average chondrule diameter (550 \u00b5m) are closer to typical values for L chondrites than H chondrites. The (Fe,Ni) metal modal abundance (5 vol%), magnetic susceptibility, and possibly whole rock oxygen isotopic composition indicate intermediate properties between H and L chondrites. Noble gas composition and cosmic ray exposure (CRE) ages of Famenin and El M\u00e9dano 195 (another intermediate ordinary chondrite) shows their gas-rich character and an older ejection age from their parent body than those for the majority of H and L chondrites. Famenin, together with similar intermediate ordinary chondrites, increases the diversity of this meteorite clan and suggests the existence of a separate ordinary chondrite group with a composition broadly intermediate between H and L groups for which a different designation (HL) is proposed. Ordinary chondrites likely originate from more than three parent bodies (H, L, and LL) as traditionally proposed.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hamed Pourkhorsandi, J\u00e9r\u00f4me Gattacceca, Pierre Rochette, Thomas Smith, Lydie Bonal, Massimo D\u2019Orazio, Bertrand Devouard, Corinne Sonzogni, Vinciane Debaille Meteoritics &amp; Planetary Scienceaccepted for publication, February 2022 LINK (OPEN ACCESS)PDF (DOWNLOAD) and PDF (OPEN ACCESS) Update&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[59,2445,6,23,7,47],"tags":[1841,2932,2446,6238,1807,1832],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/30185"}],"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=30185"}],"version-history":[{"count":3,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/30185\/revisions"}],"predecessor-version":[{"id":30412,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/30185\/revisions\/30412"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=30185"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=30185"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=30185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}