[meteorite-list] Portales Valley Classification Info

[martinh 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  
> 
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