This answer comes from Randy Korotev, emailed to me in response to
Dave's question:
If these stones really are all from one meteorite, which is my
working hypothesis, it is the most lithologically (rock-type)
complex lunar meteorite there is. It's a coarse-grained
breccia. On my web site, I call it "complex fragmental and regolith
breccia consisting of basalt and cumulate olivine gabbro." The
different stones are each different pieces of the elephant, the thin
sections are (too) small, and the stones have not all been described
by the same petrologists.
Our reasons for believing that they're all paired are described in
our MetSoc abstract:
http://www.lpi.usra.edu/meetings/metsoc2006/pdf/5235.pdf
I haven't actually seen NWA 2700 yet, though. The abstract should
have stressed that in detail there's no sample in the Apollo
collection like any of the rock types in this meteorite. It would
be a real coincidence if they're not all related (two or more
impacts into a unique, anomalous area).
Jeff
At 04:27 PM 7/31/2006, 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" <[EMAIL PROTECTED]>
To: "Meteorite List" <[email protected]>
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
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>
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Dr. Jeffrey N. Grossman phone: (703) 648-6184
US Geological Survey fax: (703) 648-6383
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