{"id":31603,"date":"2022-11-23T17:02:59","date_gmt":"2022-11-23T16:02:59","guid":{"rendered":"https:\/\/karmaka.de\/?p=31603"},"modified":"2022-11-23T17:02:59","modified_gmt":"2022-11-23T16:02:59","slug":"sub-microscopic-magnetite-and-metallic-iron-particles-formed-by-eutectic-reaction-in-change-5-lunar-soil","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=31603","title":{"rendered":"Sub-microscopic magnetite and metallic iron particles formed by eutectic reaction in Chang\u2019E-5 lunar soil<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Zhuang Guo, Chen Li, Yang Li, Yuanyun Wen, Yanxue Wu, Bojun Jia, Kairui Tai, Xiaojia Zeng, Xiongyao Li, Jianzhong Liu &amp; Ziyuan Ouyang<\/p>\n\n\n\n<p>Nature Communications, Volume 13, Article number: 7177<\/p>\n\n\n\n<p><a href=\"https:\/\/www.nature.com\/articles\/s41467-022-35009-7\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/www.nature.com\/articles\/s41467-022-35009-7.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;Ferric iron as well as magnetite are rarely found in lunar samples, and their distribution and formation mechanisms on the Moon have not been well studied. Here, we discover sub-microscopic magnetite particles in Chang\u2019E-5 lunar soil. Magnetite and pure metallic iron particles are embedded in oxygen-dissolved iron-sulfide grains from the Chang\u2019E-5 samples. This mineral assemblage indicates a FeO eutectoid reaction (4FeO\u2009=\u2009Fe3O4\u2009+\u2009Fe) for formation of magnetite. The iron-sulfide grains\u2019 morphology features and the oxygen\u2019s distribution suggest that a gas\u2013melt phase reaction occurred during large-impact events. This could provide an effective method to form ubiquitous sub-microscopic magnetite in fine lunar soils and be a contributor to the presentation of ferric iron on the surface of the Moon. Additionally, the formation of sub-microscopic magnetite and metallic iron by eutectoid reaction may provide an alternative way for the formation of magnetic anomalies observed on the Moon.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Zhuang Guo, Chen Li, Yang Li, Yuanyun Wen, Yanxue Wu, Bojun Jia, Kairui Tai, Xiaojia Zeng, Xiongyao Li, Jianzhong Liu &amp; Ziyuan Ouyang Nature Communications, Volume 13, Article number: 7177 LINK (OPEN ACCESS)PDF (OPEN ACCESS)&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41,115],"tags":[5924,1827,1478,2647,994,1857],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/31603"}],"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=31603"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/31603\/revisions"}],"predecessor-version":[{"id":31604,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/31603\/revisions\/31604"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=31603"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=31603"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=31603"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}