Dear All, It seems, there is a problem with the class C mesosiderites and the metal-rich diogenites, which may just be fragments of the same meteorite shower.
In the last Met. Bulletin 88, the following classifications and remarks are given: NWA 1982: an ungrouped achondrite "not paired with NWA 1827 or NWA 1879 mesosiderite" NWA 1827: mesosiderite (tentatively classified C) "resembles a metal-rich diogenite... [but is] part of a large, heterogeneous mesosiderite containing sparse eucritic and diogenitic clasts" In the abstract by T. E. Bunch et al. (2003) MAPS 39, no. 8 (Suppl.), p.A19, which is the same MAPS issue with the Bulletin 88, the authors conclude that NWA 1827 and NWA 1982 are paired and that they "could be misidentified as "metal-rich diogenite." So, at least for NWA 1982, we have a clear ambiguity between these two references. Best regards, Jörn > -----Ursprüngliche Nachricht----- > Von: David Weir [mailto:[EMAIL PROTECTED] > Gesendet: Mittwoch, 15. September 2004 20:03 > An: [EMAIL PROTECTED] > Cc: [EMAIL PROTECTED] > Betreff: Re: [meteorite-list] metal-rich diogenite vs mesosiderite-C > > > John, > > According to the scientists at NAU (Wittke, Bunch), this is a > metal-rich > diogenite and not a meso. Check out their nice website: > > http://jan.ucc.nau.edu/~wittke/Microprobe/Probe.html > > Click on "NAU Meteorite Classifications" and then on the diogenite > section and scroll to the bottom to read the official > classification. My > website also has some information on this unique diogenite. > > David > ______________________________________________ > Meteorite-list mailing list > [EMAIL PROTECTED] > http://six.pairlist.net/mailman/listinfo/meteorite-list > ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://six.pairlist.net/mailman/listinfo/meteorite-list
