LINK<\/strong><\/a><\/p>\n\n\n\n“Among the many ungrouped meteorites, Acfer 370, NWA 7135, and El M\u00e9dano 301\u2014probably along with the chondritic inclusion in Cumberland Falls and ALHA 78113\u2014represent a homogeneous grouplet of strongly reduced forsterite\u2010rich chondrites characterized by common textural, chemical, mineralogical, and isotopic features. All of these meteorites are much more reduced than OCs, with a low iron content in olivine and low\u2010Ca pyroxene. In particular, Acfer 370 is a type 4 chondrite that has olivine and low\u2010Ca pyroxene compositional ranges of Fa 5.2\u20135.8 and Fs 9.4\u201333.4, respectively. The dominant phase is low\u2010Ca pyroxene (36.3 vol%), followed by Fe\u2010Ni metal (16.3 vol%) and olivine (15.5 vol%); nevertheless, considering the Fe\u2010oxyhydroxide (due to terrestrial weathering), the original metal content was around 29.6 vol%. Finally, the mean oxygen isotopic composition \u039417O = +0.68\u2030 along with the occurrence of a silica phase, troilite, Ni\u2010rich phosphides, chromite, and oldhamite confirms that these ungrouped meteorites have been affected by strong reduction and are different from any other group recognized so far.”<\/p>\n","protected":false},"excerpt":{"rendered":"
Giovanni Pratesi, Stefano Caporali, Richard C. Greenwood, Vanni Moggi Cecchi, Ian A. Franchi Meteoritics & Planetary Science LINK “Among the many ungrouped meteorites, Acfer 370, NWA 7135, and El M\u00e9dano 301\u2014probably along with the chondritic…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[59,1557,951],"tags":[1560,5251,1558,2899,5252,962,1731],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/20654"}],"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=20654"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/20654\/revisions"}],"predecessor-version":[{"id":20655,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/20654\/revisions\/20655"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=20654"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=20654"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=20654"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}