{"id":13722,"date":"2017-09-29T14:08:11","date_gmt":"2017-09-29T12:08:11","guid":{"rendered":"http:\/\/karmaka.de\/?p=13722"},"modified":"2017-10-18T16:16:27","modified_gmt":"2017-10-18T14:16:27","slug":"cloppenburg-h4-5-first-results-of-a-new-find","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=13722","title":{"rendered":"Cloppenburg (H4-5) \u2013 first results of a new find"},"content":{"rendered":"

Storz*, J., Bischoff, A., Degering, D., Ebert, S., Heinlein, D., Jull, T., Kontul, I., Li, X., Merchel, S., Oberst, J., Ott, U., Pack,, A., Peters, S., Pet\u00f6, M.K., Rugel, G. <\/p>\n

Paneth Kolloquium N\u00f6rdlingen (2017), abstract #0075
\nOctober 11-13, 2017<\/p>\n

PDF<\/strong><\/a><\/p>\n

“The Cloppenburg meteorite of 141 g was found March 15, 2017 by the facility manager of a school while collecting rocks for the school garden. The rock with a mean density of (3.33 \u00b1 0.03) g\/cm3 is a brecciated H-group ordinary chondrite (H4-5) with mean olivine and low-Ca pyroxene of Fa18.5\u00b10.3 and Fs16.4\u00b10.6, respectively. The breccia containing shock veins is weakly shocked (S3) and heavily weathered (W3). The occurrence of vivianite, the oxygen isotopes, and the Ba-enrichment (by INAA) indicate strong weathering in a very wet environment. Radionuclide data evaluation is still ongoing: Accelerator mass spectrometry (AMS) of 14C, will reveal the terrestrial age. An upper limit of the terrestrial age is yet set by low-level gamma-spectrometry in the Felsenkeller underground lab. No 22Na (t1\/2=2.6 a) nor 44Ti (t1\/2=59 a) could been detected within a counting time of 27 days, whereas 26Al (t1\/2=0.7 Ma) was clearly identified. AMS of 10Be (t1\/2=1.4 Ma) of ~18 dpm\/kg confirms the cosmic ray exposure age (CRE age) of (7.5 \u00b1 0.4) Ma from noble gas mass spectroscopy.”<\/p>\n

Update (18 October 2017):<\/p>\n

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Cloppenburg meteorite (Photo: DLR)<\/p><\/div>\n

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Cloppenburg meteorite (Photo: DLR)<\/p><\/div>\n

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H. Osterburg at the find location. (Photo: DLR)<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

Storz*, J., Bischoff, A., Degering, D., Ebert, S., Heinlein, D., Jull, T., Kontul, I., Li, X., Merchel, S., Oberst, J., Ott, U., Pack,, A., Peters, S., Pet\u00f6, M.K., Rugel, G. Paneth Kolloquium N\u00f6rdlingen (2017), abstract…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,7],"tags":[4131,1849,1806,1807],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/13722"}],"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=13722"}],"version-history":[{"count":5,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/13722\/revisions"}],"predecessor-version":[{"id":13790,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/13722\/revisions\/13790"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13722"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=13722"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13722"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}