[meteorite-list] Capot Rey...photos please of the H5

From: drtanuki <drtanuki_at_meteoritecentral.com>
Date: Sat Sep 24 04:23:16 2005
Message-ID: <20050924082314.26995.qmail_at_web53202.mail.yahoo.com>

Dear Martin and List,
  Respectfully Martin, because it has not be
classified by a qualified scientist. An IMB commands
a different price than a breccia. Best, Dirk

--- Martin Altmann <Altmann_at_Meteorite-Martin.de>
wrote:

> Hi Jeff,
>
> why it should not be an IMB?
> Maybe you have in mind, if you think to an IMB, only
> such optically on first
> glimpse uniformly looking black IMBs like Cat
> Mountain or el Kachla, as they
> have only a poor contrast between melt and clasts?
> An IMB has not to have lost all chondritic
> structures, it hasn't to be
> totally and completely recrystallized.
> On contrary a characteristicum of a IMB is the
> mixture of molten material
> and unmolten material with chondritic structure.
> Some say the chondritic
> parts are remainders of the impactor, others that
> the melt was pressed by
> impact into the chondritic host material, again
> others see many different
> impact events...depending, what is to be found in
> the very location.
>
>
> Take a look on this slice from Erich Haiderer of
> famous Rio Limay:
> http://www.meteorite.com/Erichs/riolimay.jpg
> Look at the upper part. Do you see the clasts?
>
> And voila Dho 010:
> http://www.star-bits.com/dhofar010.htm
> (didn't found in that hurry pictures of larger
> slices)
>
> Cat Mountain I hadn't in my hands yet,
> but perhaps you'll find also some nice chondrules
> left in the single rounded
> fragment in your specimen:
>
http://www.meteorites.com.au/odds&ends/catmountain.jpg
>
> Ah - I see, you listed some samples on your hp, a
> little IMB-page:
>
http://www.meteorites.com.au/odds&ends/impactmelts.html
>
> Look there Matteo, the melt hasn't to be metal free,
> see NWA 2085
> and if I think of El Kachla-NWA 722, the dynamic
> looking distribution of the
> metal in the molten parts is the main reason, why
> that IMB is so
> spectacular!
> http://www.meteorite.fr/en/forsale/IMB.htm
> More interesting would be, Matteo, whether you can
> find chondrules in that
> parts supposed to be a melt.
>
> Hence, if I look at Carstens fullslice of Capot Rey
> on his pages,
> http://www.gi-po.de/main_eng.htm ,
> I really can't follow you Jeff, why you exclude with
> such a certainity that
> it can't be an IMB?
> Is it because the slice recently shown by Carsten
> has such a small surface,
> that you guess that the melt streams are only some
> somewhat larger shock
> veins?
> (Cahaaarsten, please send a detailled picture of the
> full slice from your
> hp, make also some close ups. We want to see the
> stuff!)
> In Dho 010 for example, you find also aereas, where
> the rounded clasts are
> sitting very close to each other.
> (O Carsten, are you sick? That cool NWAxxx IMB is
> much to cheap with 5$/g)
>
> Anyway, if you're not content with simple
> eyeproving,
> voila IMCA should enter the stage - we know, how
> difficult it is to find a
> place, where classification is done in a
> non-biblical time,
> therefore I'm sure IMCA will help to find a place
> and Carsten will give a
> nice IMB-Capot-Rey piece to get it examined,
> if you feel better then.
> Thrilling, isn't it?
>
> Cheerio!
> Martin
>
>
>
> ----- Original Message -----
> From: "Jeff Kuyken" <info_at_meteorites.com.au>
> To: "Martin Altmann" <Altmann_at_Meteorite-Martin.de>;
> <meteorite-list_at_meteoritecentral.com>
> Sent: Saturday, September 24, 2005 3:57 AM
> Subject: Re: [meteorite-list] Capot Rey...photos
> please of the H5
>
>
> > Hi Martin,
> >
> > I can certainly see what you are saying but that
> was not really my point.
> My
> > point is that it is not up to us to 'make-up'
> classifications without the
> > proper science being done. Admittedly, I've only
> seen a few photos of the
> > Caopt Rey pieces and in my opinion the one that
> was just posted by Cartsen
> > is certainly a highly shocked piece but it's not
> an IMB. I think if you
> > compare them to meteorites like Cat Mountain or
> Mike Farmer's NWA 2085 you
> > will see what I mean. That said, it is certainly a
> gorgeous meteorite
> which
> > I wouldn't mind having a piece myself! ;-)
> >
> > Cheers,
> >
> > Jeff
> >
>
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Received on Sat 24 Sep 2005 04:23:13 AM PDT