{"id":22499,"date":"2020-06-29T15:23:48","date_gmt":"2020-06-29T13:23:48","guid":{"rendered":"http:\/\/karmaka.de\/?p=22499"},"modified":"2020-06-29T15:25:40","modified_gmt":"2020-06-29T13:25:40","slug":"the-sulfurization-recorded-in-tridymite-in-the-monomict-eucrite-northwest-africa-11591","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=22499","title":{"rendered":"The sulfurization recorded in tridymite in the monomict eucrite Northwest Africa 11591<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Li\u2010Lin Huang, Bing\u2010Kui Miao, Guo\u2010Zhu Chen, Hui\u2010Min Shao, Zi\u2010Yuan Ouyang<\/p>\n\n\n\n<p>Meteoritics &amp; Planetary Science<br>First Published: 29 June 2020<\/p>\n\n\n\n<p><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/full\/10.1111\/maps.13495\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/epdf\/10.1111\/maps.13495\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;Some of the tridymite in the monomict Northwest Africa (NWA) 11591 eucrite are found to have sulfide\u2010rich replacement textures (SRTs) to varying degrees. The SRTs of tridymite in NWA 11591 are characterized by the distribution of loose porous regions with aggregates of quartz and minor troilite grains along the rims and fractures of the tridymite, and we propose a new mechanism for the origin of this texture. According to the volume and density conversion relationship, the quartz in the SRT of tridymite with a hackle fracture pattern was transformed from tridymite. We suggest that the primary tridymite grains are affected by the S\u2010rich vapors along the rims and fractures, leading to the transformation of tridymite into quartz. In addition, the S\u2010rich vapors reacted with Fe2+, which was transported from the relict tridymite and\/or the adjacent Fe\u2010rich minerals, and\/or the S\u2010rich vapors react with the exotic metallic Fe to form troilite grains. The sulfurization in NWA 11591 most likely occurred during the prolonged subsolidus thermal metamorphism in the shallow crust of Vesta and might be an open, relatively high temperature (&gt;800 \u00b0C) process. Sulfur would be an important component of the metasomatic fluid on Vesta.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Li\u2010Lin Huang, Bing\u2010Kui Miao, Guo\u2010Zhu Chen, Hui\u2010Min Shao, Zi\u2010Yuan Ouyang Meteoritics &amp; Planetary ScienceFirst Published: 29 June 2020 LINK (OPEN ACCESS)PDF (OPEN ACCESS) &#8220;Some of the tridymite in the monomict Northwest Africa (NWA) 11591 eucrite&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28,35,186],"tags":[1823,5588,1843,1872],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/22499"}],"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=22499"}],"version-history":[{"count":2,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/22499\/revisions"}],"predecessor-version":[{"id":22501,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/22499\/revisions\/22501"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=22499"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=22499"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=22499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}