[meteorite-list] Ad - Outstanding Specimens Ending This Afternoon -MUST SEE!

[Adam Hupe]

I talked to Dr. Bunch about this classification and he stands by the results
published in the Meteoritical Bulletin.

Here is the peer reviewed link including the wide Cr2O3 spread indicating a
3.0:
http://tin.er.usgs.gov/meteor/metbull.php?code=33368

Dr. Grossman's proposed method was used in determining the perfect 3.0 with
a peer-reviewed and published Cr2O3 spread in olivine = 0.38 wt % ± 0.24.
If this wide spread is not reproducible in another laboratory then maybe
another method should be used or maybe a wider range of chondrules should be
studied.  Either way, Dr. Bunch, who has been studying meteorites for
decades tested NWA2918 extensively and claims it is much better than Colony,
a proposed 3.05 using this method. Unless another method proves otherwise, I
will go with Dr. Bunches classification for now.

Regards,

Adam


----- Original Message ----- 
From: "David Weir" <dgweir at earthlink.net>
To: "Meteorite List" <meteorite-list at meteoritecentral.com>; "Adam Hupe"
<raremeteorites at comcast.net>
Sent: Tuesday, September 05, 2006 1:27 PM
Subject: Re: [meteorite-list] Ad - Outstanding Specimens Ending This
Afternoon -MUST SEE!


> Jeff Grossman wrote:
>
> > 1) NWA 2918. An abstract is not peer reviewed, however I'll stand by my
> > classification of NWA 2918.  It's a very nice meteorite, but more
> > metamorphosed than 3.0.  There are actually three CO3.0 chondrites.  In
> > addition to ALHA77307, Y-81020 and Colony are both 3.0, but Colony is so
> > horribly weathered that it is scarcely worth mentioning.