{"id":28838,"date":"2021-09-21T12:23:07","date_gmt":"2021-09-21T10:23:07","guid":{"rendered":"https:\/\/karmaka.de\/?p=28838"},"modified":"2021-09-21T12:28:23","modified_gmt":"2021-09-21T10:28:23","slug":"determination-of-phase-relations-of-the-olivine-ahrensite-transition-in-the-mg2sio4-fe2sio4-system-at-1740-k-using-modern-multi-anvil-techniques","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=28838","title":{"rendered":"Determination of phase relations of the olivine\u2013ahrensite transition in the Mg2SiO4\u2013Fe2SiO4 system at 1740 K using modern multi-anvil techniques<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Artem Chanyshev, Dmitry Bondar, Hongzhan Fei, Narangoo Purevjav, Takayuki Ishii, Keisuke Nishida, Shrikant Bhat, Robert Farla &amp; Tomoo Katsura<\/p>\n\n\n\n<p>Contributions to Mineralogy and Petrology, Volume 176, Article number: 77 (2021)<\/p>\n\n\n\n<p><a href=\"https:\/\/link.springer.com\/article\/10.1007\/s00410-021-01829-x\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00410-021-01829-x.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;The phase relations of iron-rich olivine and its high-pressure polymorphs are important for planetary science and meteoritics because these minerals are the main constituents of terrestrial mantles and meteorites. The olivine\u2013ahrensite binary loop was previously determined by thermochemical calculations in combination with high-pressure experiments; however, the transition pressures contained significant uncertainties. Here we determined the binary loop of the olivine\u2013ahrensite transition in the (Mg,Fe)2SiO4 system at 1740 K in the pressure range of 7.5\u201311.2 GPa using a multi-anvil apparatus with the pressure determined using in situ X-ray diffraction, compositional analysis of quenched run products, and thermochemical calculation. Based on the determined binary loop, a user-friendly software was developed to calculate pressure from the coexisting olivine and ahrensite compositions. The software is used to estimate the shock conditions of several L6-type chondrites. The obtained olivine\u2013ahrensite phase relations can also be applied for precise in-house multi-anvil pressure calibration at high temperatures.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Artem Chanyshev, Dmitry Bondar, Hongzhan Fei, Narangoo Purevjav, Takayuki Ishii, Keisuke Nishida, Shrikant Bhat, Robert Farla &amp; Tomoo Katsura Contributions to Mineralogy and Petrology, Volume 176, Article number: 77 (2021) 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":[23,7,63],"tags":[2754,6109,4598,3659,3188,1878,292,1807,1844,6110,1885],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/28838"}],"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=28838"}],"version-history":[{"count":2,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/28838\/revisions"}],"predecessor-version":[{"id":28840,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/28838\/revisions\/28840"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=28838"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=28838"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=28838"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}