[meteorite-list] Portales Valley Classification Info
From: martinh_at_isu.edu <martinh_at_meteoritecentral.com>
Date: Mon May 16 22:29:03 2005 Message-ID: <b1f8d9a7.d9a7b1f8_at_isu.edu> Hello Robert and all, I've always considered PV a round peg in a square hole. I mean that even a quick glance at PV is enough to know it doesn't make sense to lump it in with the run-of-the-mill ordinary chondrite. So this change in heart by the classification gods is really good news. Looking forward to knowing more.... Martin ----- Original Message ----- From: Robert Woolard <meteoritefinder_at_yahoo.com> Date: Monday, May 16, 2005 7:21 pm Subject: [meteorite-list] Portales Valley Classification Info > Hello List, > > Well for years now, I know a lot of us were puzzled > by the classification of Portales Valley as an " H6 > ordinary chondrite". (See my article in the May 2001 > issue of Meteorite, titled " Portales Valley - A Not > So Ordinary (Ordinary Chondrite??)! " In the recent > past, the classification was modified a bit, being > changed to read as an " H6 Impact Melt Breccia ". > > I am excited to be able to say that there is a > distinct chance the true uniqueness of PV may soon be > reflected in a possible new moniker for this > intriguing meteorite. David Weir was kind enough to > make me aware of a new and comprehensive paper by Alex > Ruzicka, Marvin Killgore, David Mittlefehldt, and Marc > Fries in the current MAPS. In this detailed work, we > now have the proposed reclassification of PV as an " > H7, metallic-melt breccia (primitive achondrite)", > with the case made for a new meteorite type > designation of "Portalesite" due to this metallic-melt > breccia characteristic. > > You can read David's updated description of PV on > his excellent website here: > > http://www.meteoritestudies.com > > Many thanks to David for news of this exciting > paper, and to the authors of the paper as well. > > Sincerely, > Robert Woolard > > > > > > > > > > > > > > > > > > > > > > > > __________________________________ > Do you Yahoo!? > Yahoo! Mail - You care about security. So do we . > http://promotions.yahoo.com/new_mail > ______________________________________________ > Meteorite-list mailing list > Meteorite-list_at_meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list > Received on Mon 16 May 2005 10:28:52 PM PDT |
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