Correction to \u201cPetrography and isotopic studies of refractory inclusions and Al-rich chondrules in Semarkona, ALHA81251, and Chainpur unequilibrated ordinary chondrites\u201d<\/strong><\/a><\/p>\n\n\n\n“In the legend for Figure 9b, Vigarano has been corrected to Chainpur. We apologize for this error.”<\/p>\n\n\n\n
\n\n\n\n“Ordinary, enstatite, and Rumuruti type have the lowest abundance of refractory inclusions amongst chondritic meteorites. Calcium-aluminum-rich inclusions (CAIs) within these are hallmarked by a relatively small average diameter of ~45\u2009\u03bcm (size range 4\u2013382\u2009\u03bcm). One CAI, one amoeboid olivine aggregate (AOA), one spinel-bearing chondrule, and two aluminum-rich chondrules from Semarkona (LL3.00) along with one CAI each from Allan Hills (ALHA) 81251 (LL3.2) and Chainpur (LL3.4) were identified following an extensive search. These objects were studied for their petrography, mineral chemistry, relative (26Al) chronology, and three oxygen isotopic compositions. The initial 26Al\/27Al ratio of (4.96 \u00b1\u20090.14) \u00d7\u200910\u22125 (2\u03c3) in a type A CAI in Chainpur, the largest size (1500 \u00d7\u20091200 \u03bcm) found so far in the noncarbonaceous (ordinary) chondrites, forming in an 16O-rich early solar system reservoir (\u039417O = \u221224\u2030) is consistent with previous studies. The Chainpur CAI 1 has a Wark\u2013Lovering rim, the first reported case within the noncarbonaceous chondrites. The hibonite\u2013pyroxene spherule in ALHA81251 (CAI 1) is the first reported case of a hibonite\u2013pyroxene spherule in the ordinary chondrites of these rare objects (~12 known so far) within meteorites. The hibonite\u2013pyroxene spherule in ALHA81251 has a low abundance of 26Al\/27Al ratio of (1.2 \u00b1\u20090.6) \u00d7\u200910\u22125 with \u039417O of ~ \u221214.5\u2030 \u00b1\u20092.0\u2030. An olivine-phyric Al-rich chondrule in Semarkona (Ch 54) formed at ~0.9 Ma with \u039417O of ~0\u2030, while Semarkona (Ch 44) formed in a relatively 16O-rich reservoir with \u039417O of ~ \u22122.0\u2030. The spinel-bearing chondrule in Semarkona (Ch 205) shows no resolved excess in \u039426Mg and has a planetary-like oxygen isotopic composition. Oxygen isotope composition and 26Al-26Mg relative chronology of these objects confirm their origin and evolution under cosmochemical conditions similar to their \u201ctypical\u201d carbonaceous kindred and extend the knowledge of the cosmochemical environment in the early solar system.”<\/p>\n","protected":false},"excerpt":{"rendered":"
Ritesh Kumar Mishra, Kuljeet Kaur Marhas, Justin Ibrahim Simon, Yves Marrocchi, Johan Villeneuve MAPS, First published: 28 October 2025 LINK UPDATE (16 January 2026): Correction to \u201cPetrography and isotopic studies of refractory inclusions and Al-rich…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[66,56,24,7,57,2961],"tags":[2958,448,2278,7006,6361,1846,3071,4308,1845,5556,158,675],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/39498"}],"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=39498"}],"version-history":[{"count":2,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/39498\/revisions"}],"predecessor-version":[{"id":40010,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/39498\/revisions\/40010"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=39498"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=39498"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=39498"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}