[meteorite-list] NWA 773 lunar pairings

From: David Weir <dgweir_at_meteoritecentral.com>
Date: Mon Jul 31 17:02:11 2006
Message-ID: <44CE6FCF.8040105_at_earthlink.net>

Dave and List,

I believe you are seeing the individual descriptions of a variety of
clasts comprising a single large fragmental breccia meteorite. The fact
that this was such a fragmental breccia was not made clear until many of
the smaller individual lithologies were found and analyzed and
determined to belong together.

My point about NomCom concerned the issue of whether these new Bulletin
entries (e.g., NWA 2727) would be permitted to include a statement about
its likely pairing to NWA 773. I didn't think that NomCom rules would
permit this, even though it would be beneficial information for which to
have access. As Jeff acknowledged, it would be the professional journals
in which this info would be deseminated.

David


Dave Carothers wrote:


> Good evening, all.
>
> Can someone please help me out with an explanation?
>
> In looking at the Met Bul classifications of the "pairings" we have:
>
> NWA 773, Lunar cumulate olivine norite with regolith breccia
> NWA 2700 Classification pending
> NWA 2727 Lunar mare basalt/gabbro breccia
> NWA 2977 Lunar gabbro
> NWA 3160 Lunar mare basalt breccia
> NWA 3333 Classification pending
>
> To my military mind, it seems to me that the classifications of the above
> Lunars are divergent enough to wonder how they could be paired. If they are
> truely paired, shouldn't the original classifications been the same or
> closer?
>
> Thanks,
>
> Dave
> ----- Original Message -----
> From: "David Weir" <dgweir_at_earthlink.net>
> To: "Meteorite List" <meteorite-list_at_meteoritecentral.com>
> Sent: Monday, July 31, 2006 3:23 PM
> Subject: [meteorite-list] NWA 773 lunar pairings
>
>
>> List,
>>
>> Well, the results are in - in the MetSoc 69th Annual Meeting abstract
>> #5235 that is... and just as I had suspected, NWA 773 has any brothers
>> and sisters: NWA 2700 (previously with Boswell), 2727 (Oakes et al.),
>> 2977 (Farmer), 3160 (Hupe), and 3333 (Kuntz) are all considered to be
>> paired by the eminent scientists Zeigler, Korotev, Jolliff, Bunch, and
>> Irving. Of course, I'm not sure the NomCom rules allow such an official
>> pairing with NWA 773 after the fact, especially with no reliable
>> geographic coordinates. But then a future peer-reviewed journal
>> publication could make it officially "official" I believe. No matter,
>> the abstract is more than convincing if your own eyes have ever cast
>> doubt on their pairing. I have some revisions to make on my site.
>>
>> David
Received on Mon 31 Jul 2006 05:02:07 PM PDT