{"id":25894,"date":"2021-02-02T19:38:01","date_gmt":"2021-02-02T18:38:01","guid":{"rendered":"http:\/\/karmaka.de\/?p=25894"},"modified":"2021-02-02T19:42:49","modified_gmt":"2021-02-02T18:42:49","slug":"the-polymict-carbonaceous-breccia-aguas-zarcas-a-potential-analog-to-samples-being-returned-by-the-osiris%e2%80%90rex-and-hayabusa2-missions","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=25894","title":{"rendered":"The polymict carbonaceous breccia Aguas Zarcas: A potential analog to samples being returned by the OSIRIS\u2010REx and Hayabusa2 missions<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Imene Kerraouch, Addi Bischoff, Michael E. Zolensky, Andreas Pack, Markus Patzek, Romy D. Hanna, Marc D. Fries, Dennis Harries, Yoko Kebukawa, Loan LeMotoo, ItoZia Rahman<\/p>\n\n\n\n<p>Meteoritics &amp; Planetary Science<br>First Published: 2 February 2021<\/p>\n\n\n\n<p><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/full\/10.1111\/maps.13620\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/epdf\/10.1111\/maps.13620\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;On April 23, 2019, a meteorite fall occurred in Aguas Zarcas, Costa Rica. According to the Meteoritical Bulletin, Aguas Zarcas is a brecciated CM2 chondrite dominated by two lithologies. Our X\u2010ray computed tomography (XCT) results show many different lithologies. In this paper, we describe the petrographic and mineralogical investigation of five different lithologies of the Aguas Zarcas meteorite. The bulk oxygen isotope compositions of some lithologies were also measured. The Aguas Zarcas meteorite is a breccia at all scales. From two small fragments, we have noted five main lithologies, including (1) Met\u20101: a metal\u2010rich lithology; (2) Met\u20102: a second metal\u2010rich lithology which is distinct from Met\u20101; (3) a brecciated CM lithology with clasts of different petrologic subtypes; (4) a C1\/2 lithology; and (5) a C1 lithology. The Met\u20101 lithology is a new and unique carbonaceous chondrite which bears similarities to CR and CM chondrite groups, but is distinct from both based on oxygen isotope data. Met\u20102 also represents a new type of carbonaceous chondrite, but it is more similar to the CM chondrite group, albeit with a very high abundance of metal. We have noted some similarities between the Met\u20101 and Met\u20102 lithologies and will explore possible genetic relationships. We have also identified a brecciated CM lithology with two primary components: a chondrule\u2010poor lithology and a chondrule\u2010rich lithology showing different petrologic subtypes. The other two lithologies, C1 and C1\/2, are very altered and possibly related to the CM chondrite group. In this article, we describe all the lithologies in detail and attempt a classification of each in order to understand the origin and the history of formation of the Aguas Zarcas parent body.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Imene Kerraouch, Addi Bischoff, Michael E. Zolensky, Andreas Pack, Markus Patzek, Romy D. Hanna, Marc D. Fries, Dennis Harries, Yoko Kebukawa, Loan LeMotoo, ItoZia Rahman Meteoritics &amp; Planetary ScienceFirst Published: 2 February 2021 LINK (OPEN&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5001,9,18,2243,552,181,47],"tags":[4965,3273,3275,105,477,1832],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/25894"}],"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=25894"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/25894\/revisions"}],"predecessor-version":[{"id":25895,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/25894\/revisions\/25895"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25894"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25894"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}