{"id":7996,"date":"2016-03-09T21:41:56","date_gmt":"2016-03-09T20:41:56","guid":{"rendered":"http:\/\/karmaka.de\/?p=7996"},"modified":"2017-02-21T08:20:58","modified_gmt":"2017-02-21T07:20:58","slug":"northwest-africa-5958-a-weakly-altered-cm-related-ungrouped-chondrite-not-a-ci3","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=7996","title":{"rendered":"Northwest Africa 5958: A weakly altered CM-related ungrouped chondrite, not a CI3.<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"<p>Jacquet, E., Barrat, J.-A., Beck, P., Caste, F., Gattacceca, J., Sonzogni, C. and Gounelle, M.<\/p>\n<p>Meteoritics &#038; Planetary Science. doi: 10.1111\/maps.12628<\/p>\n<p>Update (20 Feb 2017): <a href=\"http:\/\/arxiv.org\/pdf\/1702.05955\" target=\"_blank\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><br \/>\n<a href=\"http:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/maps.12628\/abstract\" target=\"_blank\"><strong>LINK<\/strong><\/a><\/p>\n<p>&#8220;Northwest Africa (NWA) 5958 is a carbonaceous chondrite found in Morocco in 2009. Preliminary chemical and isotopic data leading to its initial classification as C3.0 ungrouped have prompted us to conduct a multitechnique study of this meteorite and present a general description here. The petrography and chemistry of NWA 5958 is most similar to a CM chondrite, with a low degree of aqueous alteration, apparently under oxidizing conditions, and evidence of a second, limited alteration episode manifested by alteration fronts. The oxygen isotopic composition, with \u2206&#8217;17O = \u22124.3\u2030, is more 16O-rich than all CM chondrites, indicating, along with other compositional arguments, a separate parent body of origin. We suggest that NWA 5958 be reclassified as an ungrouped carbonaceous chondrite related to the CM group&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Jacquet, E., Barrat, J.-A., Beck, P., Caste, F., Gattacceca, J., Sonzogni, C. and Gounelle, M. Meteoritics &#038; Planetary Science. doi: 10.1111\/maps.12628 Update (20 Feb 2017): PDF (OPEN ACCESS) LINK &#8220;Northwest Africa (NWA) 5958 is a&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,18,335],"tags":[106,105,747,1807,1862],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/7996"}],"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=7996"}],"version-history":[{"count":2,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/7996\/revisions"}],"predecessor-version":[{"id":11795,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/7996\/revisions\/11795"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}