[meteorite-list] Gebel Kamil iron is official now - 1.6 metric tons!?!?

From: Alexander Seidel <gsac_at_meteoritecentral.com>
Date: Tue, 13 Jul 2010 21:54:25 +0200
Message-ID: <20100713195425.259700_at_gmx.net>

With an info like this - "A total of about 1600 kg of iron meteorite shrapnel (thousands of pieces), ranging in mass from < 1 to 35,000 g, plus a single 83 kg individual completely covered with well developed regmaglypts, was found in and around the 45 m diameter Kamil impact crater by an Italian-Egyptian geophysical team in February 2009 and February 2010" - shouldn?t we be a bit more patient and careful at this very early point after the discovery and quite early publication? I expect much more clearness at the taxonomic horizon once e.g. parts of that 83 kg individual or others will have been analyzed one of these days. And with a crater *THAT* large much more material may surface and be recovered as time goes by, and analysis may well be refined to some definite point. Just a matter of time and patience, right...??

Alex
Berlin/Germany


  
-------- Original-Nachricht --------
> Datum: Tue, 13 Jul 2010 07:48:03 -0400
> Von: Jeff Grossman <jgrossman at usgs.gov>
> An: meteorite-list at meteoritecentral.com
> Betreff: Re: [meteorite-list] Gebel Kamil iron is official now - 1.6 metric tons!?!?

> "Ataxite" is a structural term, like octahedrite and hexahedrite.
> Modern classification of iron meteorites is based on the chemical group,
> which can tell you something about the parent asteroid. The structural
> classification is quasi-independent of the chemical classification,
> inasmuch as members of each structural group can belong to multiple
> chemical groups. So "ataxite" has not been replaced with "iron,
> ungrouped." Both are correct.
>
> When I used to edit MetBull, the heading on the description of this
> meteorite would have said "Iron, ataxite (ungrouped)", but other editors
> have abandoned this.
>
> Jeff
>
> On 7/12/2010 9:48 PM, Galactic Stone & Ironworks wrote:
> > Hi List,
> >
> > The new Egyptian iron is now official and in the Met Bulletin
> > database. Notice the TKW! 1.6 metric tons! That is a lot of
> > fragments.
> >
> > Also notice the classification type - iron ungrouped. Not "ataxite".
> > Although the write-up does say the meteorite shows an "ataxitic
> > structure".
> >
> > http://tin.er.usgs.gov/meteor/metbull.php?code=52031
> >
> > Best regards,
> >
> > MikeG
> >
> > ------------------------------------------------------------
> > Mike Gilmer - Galactic Stone& Ironworks Meteorites
> > http://www.galactic-stone.com
> > http://www.facebook.com/galacticstone
> > ------------------------------------------------------------
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Received on Tue 13 Jul 2010 03:54:25 PM PDT