LINK<\/strong><\/a><\/p>\n\n\n\n“Hydrous alteration of olivine macrocrysts in a Martian olivine phyric basalt, NWA 10416, and a terrestrial basalt from southern Colorado are examined using SEM, EPMA, TEM, and \u00b5XRD techniques. The olivines in the meteorite contain linear nanotubes of hydrous material, amorphous areas, and fluid dissolution textures quite distinct from alteration identified in other Martian meteorites. Instead, they bear resemblance to terrestrial deuteric alteration features. The presence of the hydrous alteration phase Mg\u2010laihunite within the olivines has been confirmed by \u00b5XRD analysis. The cores of the olivines in both Martian and terrestrial samples are overgrown by unaltered rims whose compositions match those of a separate population of groundmass olivines, suggesting that the core olivines are xenocrysts whose alteration preceded crystallization of the groundmass. The terrestrial sample is linked to deep crustal metasomatism and the \u201cignimbrite flare\u2010up\u201d of the Oligocene epoch. The comparison of the two samples suggests the existence of an analogous relatively water\u2010rich magmatic reservoir on Mars.”<\/p>\n","protected":false},"excerpt":{"rendered":"
Zolt\u00e1n V\u00e1ci, Carl B. Agee, Christopher D. K. Herd, Erin Walton, Oliver Tschauner, Karen Ziegler, Vitali B. Prakapenka, Eran Greenberg, Sylvia Monique\u2010Thomas Meteoritics & Planetary ScienceVersion of Record online:21 May 2020 LINK “Hydrous alteration of…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28,1598,61,112,122,42,283],"tags":[1842,80,1858,1828,2453,1878,292],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/22080"}],"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=22080"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/22080\/revisions"}],"predecessor-version":[{"id":22081,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/22080\/revisions\/22081"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=22080"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=22080"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=22080"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}