LINK<\/strong><\/a><\/p>\n“El M\u00e9dano 301 ~24\u00b051\u2019S, ~70\u00b032\u2019W
\nAntofagasta, Chile
\nFind: 2013 Nov 09
\nClassification: Ungrouped chondrite
\nHistory: A single stone was found in the Atacama desert by Pierre Rochette on November 4, 2013.
\nPhysical characteristics: A single brown stone without fusion crust
\nPetrography: Closely packed, well-defined chondrules with average apparent diameter 490\u00b1330 \u03bcm (N=60). Main minerals are olivine (forsterite), enstatite, diopside, chlorapatite, chromite, troilite, kamacite, taenite. Metal and sulfides have been extensively replaced by weathering products.
\nGeochemistry: Olivine Fa3.9\u00b10.4 (Fa3.6-5.0, PMD 5.5%, FeO\/MnO=8.0\u00b11.3, N=10), Cr2O3 0.02\u00b10.03 wt%. Orthopyroxene Fs13.1\u00b15.7 (Fs6.6-21.0, PMD=40%, N=11). Oxygen isotopic composition (J. Gattacceca, C. Sonzogni, CEREGE) is \u03b417O = 3.58 \u2030, \u03b418O = 5.38 \u2030, \u039417O = 0.78\u2030 (analysis of one 1.5 mg sample of hand-picked separated silicates after acid cleaning). Magnetic susceptiblity log \u03c7 (\u00d7 10-9 m3\/kg)=4.62.
\nClassification: Chondrite-ung. With Fa3.6-5.0, this meteorite has affinities with NWA 7135 that has Fa4.8-6.3 and similar oxygen isotope composition, although NWA 7135 is more reduced, with occurrence of schreibersite and oldhamite.
\nSpecimens: Polished section, main mass and type specimen at CEREGE”<\/p>\n","protected":false},"excerpt":{"rendered":"
El M\u00e9dano 301 classified as ungrouped chondrite with affinities to NWA 7135 LINK “El M\u00e9dano 301 ~24\u00b051\u2019S, ~70\u00b032\u2019W Antofagasta, Chile Find: 2013 Nov 09 Classification: Ungrouped chondrite History: A single stone was found in the…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1557,7],"tags":[962,1731],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/8205"}],"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=8205"}],"version-history":[{"count":2,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/8205\/revisions"}],"predecessor-version":[{"id":8207,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/8205\/revisions\/8207"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8205"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8205"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}