{"id":21353,"date":"2020-01-31T17:35:18","date_gmt":"2020-01-31T16:35:18","guid":{"rendered":"http:\/\/karmaka.de\/?p=21353"},"modified":"2020-01-31T17:35:19","modified_gmt":"2020-01-31T16:35:19","slug":"northwest-africa-12869-primitive-achondrite-from-the-cr2-parent-body-or-member-of-a-new-meteorite-group","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=21353","title":{"rendered":"Northwest Africa 12869: Primitive Achondrite from the CR2 Parent Body or Member of a New Meteorite Group?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">C. B. Agee, H. Aikin, K. Ziegler<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">51st Lunar and Planetary Science Conference (2020), Abstract #2292<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.hou.usra.edu\/meetings\/lpsc2020\/pdf\/2292.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text wp-block-paragraph\">&#8220;We report here the classification of a new primitive achondrite, Northwest Africa (NWA) 12869, which is a plagioclase-bearing harzburgite with oxygen isotopes similar to CR2 chondrites, however the high Fa- and Fs-content and Fe\/Mn of its olivines and pyroxenes appear to be inconsistent with a direct genetic link to CR2. Instead, NWA 12869 shows petrologic and geochemical resemblance to about a dozen other primitive achondrites or highly recrystallized chondrites which have been linked to the CR2 parent body because of similar oxygen and chromium isotopes [1,2]. An alternative interpretation is that these meteorites are not derived from the CR2 parent body, but instead represent a separate new meteorite group.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C. B. Agee, H. Aikin, K. Ziegler 51st Lunar and Planetary Science Conference (2020), Abstract #2292 PDF (OPEN ACCESS) &#8220;We report here the classification of a new primitive achondrite, Northwest Africa (NWA) 12869, which is&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[67,29,507],"tags":[1810,3268,5422,1820,2285],"class_list":["post-21353","post","type-post","status-publish","format-standard","hentry","category-achondrite-classification","category-primitive-achondrite","category-ungrouped-achondrite","tag-cr","tag-cr-parent-body","tag-nwa-12869","tag-primitive-achondrite","tag-ungrouped-achondrite"],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/21353","targetHints":{"allow":["GET"]}}],"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=21353"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/21353\/revisions"}],"predecessor-version":[{"id":21354,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/21353\/revisions\/21354"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=21353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}