[meteorite-list] ORANGE fresh Chelyabinsk (was: Two special Chelyabinsk individualswith Brown Lee-side Crust - color-oriented!)

From: Graham Ensor <graham.ensor_at_meteoritecentral.com>
Date: Wed, 29 May 2013 19:35:06 +0100
Message-ID: <CAJkn+kYLF25sNF-=Wg2Et6p0kPNDmdQX1gGSBbp0LQW8iXUSmA_at_mail.gmail.com>

Hi Martin....Svend beat us too it on his wonderful website ages
ago....see here for his explanation.

http://www.niger-meteorite-recon.de/en/Meteorite_fusion_crust_2.htm

Look forward to seeing you in Ensisheim.

Graham

On Wed, May 29, 2013 at 12:34 PM, Martin Altmann
<altmann at meteorite-martin.de> wrote:
> Hi Steve, Fred, all...
>
> Marvelous!
>
> Now we saw examples of Bensour, "Mauretania", Chelyabinsk and have from old
> literature Pultusk and Mocs..
>
> ...seems that Captain Blood's "Orientata" needs a new chapter:
> "Color-Orientation"!
>
> (Fascinating, after such a long time spent with meteorites, we from the
> Meteorite House weren't aware of that phenomenon,
> you always can learn something new!).
>
> Though we have to have some discipline and to be cautious, not to establish
> a new artificial hype or to create a new fashion, multiplying the prices,
> as it had happened, if you remember, first with the "hammers", then with the
> "meteorites with holes" and again afterwards with the "irons with impact
> craters".
>
> At least now the Ensisheim visitor have an additional hint, what to look
> for, if they'll rummage the tables of the Russian colleagues, which will sag
> from the loads of fantastic Chelyabinsk individuals.
>
> Cheers!
> Meteorite House
>
>
> On Tue, May 28, 2013 at 9:58 PM, Steve Witt <stelor96 at yahoo.com> wrote:
>> Martin, Fred and all,
>>
>> I just got in some of the new meteorite from Mauritania showing the
>> same thing. No black lipping, but brown crust on the back side of a
>> fresh stone.
>>
>> Front: http://www.flickr.com/photos/stevewitt/8870872109/
>>
>> Back: http://www.flickr.com/photos/stevewitt/8870872297/
>>
>>
>>
>> Steve Witt
>> IMCA #9020
>> http://imca.cc/
>>
>>
>> ________________________________
>> From: Martin Altmann <altmann at meteorite-martin.de>
>> To: meteorite-list at meteoritecentral.com
>> Sent: Monday, May 27, 2013 4:03 PM
>> Subject: Re: [meteorite-list] (House-AD): ORANGE fresh Chelyabinsk (was:
>> Two special Chelyabinsk individualswith Brown Lee-side Crust -
>> color-oriented!)
>>
>>
>> Hi Fred,
>>
>> Exactly and Wow!
>> With your Bensour it seems that just the same had happened!
>> Has also the black rim!
>>
>>
>>>My guess at the time I got it, was simply a matter of primary fusion
>>>crust
>> (the brownish one) and secondary fusion crust >(the darker one). Could
>> it be a matter of altitude where it was formed? Speed & temperature of
>> fusion?...
>>
>> There we definitely have to ask our experts of aerodynamics and
>> chemistry here.
>>
>> To me it's evident, because the black crust lips over the brown one,
>> that that brown on the back must have been formed before the crust on the
> apex.
>>
>> There are going things in flight on the back of the stones....
>> remember the Tamdakht-Couscous or the 12.5kg-flat heat-shield, which
>> had also such fragments incorporated in the skin..
>>
>> Now these color-crusts with Chelyabinsk (and Tissint).
>>
>> Here, look, our most shocking example!
>> Is something for Jan, Menno or Rob,
>> Because half of the stone is almost: ORANGE!
>>
>> Has 63.55g
>>
>> These sides are normal:
>> http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_01.JPG
>>
>> http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_02.JPG
>>
>> But look at that!
>>
>> http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_03.JPG
>>
>> http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_04.JPG
>>
>> http://www.meteoritenhaus.de/img/Chelyabinsk_63_55_g_05.JPG
>>
>> Hmm, shall we sell it too?
>> O.k....
>>
>> :-)
>> Your Meteorite House
>>
>>
>>
>> Von: Meteoriteshow [mailto:meteoriteshow at free.fr]
>> Gesendet: Montag, 27. Mai 2013 17:32
>> An: 'Martin Altmann'; meteorite-list at meteoritecentral.com
>> Betreff: RE: [meteorite-list] (House-AD): Two special Chelyabinsk
>> individualswith Brown Lee-side Crust - color-oriented!
>>
>> Hi All again,
>>
>> It seems that my link didn't work; let me try again, actually I have
>> several
>> pictures:
>>
>> http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/bengu
>> erir-7
>> 9.6g(1).jpg
>>
>> http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/bengu
>> erir-7
>> 9.6g(7).jpg
>>
>> http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/bengu
>> erir-7
>> 9.6g(6).jpg
>>
>> http://meteoriteshow.free.fr/images/for_sale/July_2007/Benguerir/bengu
>> erir-7
>> 9.6g(3).jpg
>>
>>
>> Cheers
>>
>> Fred
>> www.meteoriteshow.com
>> IMCA #2491
>>
>> -----Message d'origine-----
>> De : meteorite-list-bounces at meteoritecentral.com
>> [mailto:meteorite-list-bounces at meteoritecentral.com] De la part de
>> Martin Altmann Envoy? : lundi 27 mai 2013 14:26 ? :
>> meteorite-list at meteoritecentral.com
>> Objet : [meteorite-list] (House-AD): Two special Chelyabinsk
>> individualswith Brown Lee-side Crust - color-oriented!
>> Importance : Haute
>>
>> Hello there,
>>
>> we have to share with you a pretty exciting observation.
>> It was here already on the list, that some of you found on the
>> first-pick Chelyabinskis places with a brownish, nevertheless fresh fusion
> crust.
>> That
>> phenomenon btw. you had sometimes also on a few Tissints, there the
>> brown crust was even translucent (were horribly difficult to sell,
>> because people watching the photos were skeptical, thought, they
>> wouldn't be fresh, but weathered - and that, where no iron is present
>> in Tissint to rust).
>>
>> Many of you blossomed during the last 3 months into true
>> Chelyabinsk-experts, so please, pay attention to those two individuals
>> and tell us your
>> opinion:
>>
>> 75.45g
>>
>> http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_01.JPG
>> http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_02.JPG
>> http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_03.JPG
>>
>>
>> 68.37g
>>
>> http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_01.JPG
>> http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_02.JPG
>> http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_03.JPG
>> http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_04.JPG
>>
>>
>> Well, baffling, aren't they?
>>
>> Both of them have a side, and ONLY one side, which is fully coated by
>> the brown crust, while all other sides are black, as usual.
>>
>> Here:
>> http://www.meteoritenhaus.de/img/Chelyabinsk_68_37_g_02.JPG
>>
>> And here:
>> http://www.meteoritenhaus.de/img/Chelyabinsk_75_45_g_02.JPG
>>
>>
>> And you see, that the brown-side is framed all around by a lipping,
>> which is black, hence most would therefore say, only because of the
>> rollover-lip, that the stones are flight-oriented.
>> At least one can say, by means of the circular lipping around the
>> edges, that the stones had for a longer time a stable position in flight.
>> And that the brown side is the backside, the lee-side.
>>
>> And what is striking, is, that the lipping overlaps the brown crust,
>> hence the brown crust must have formed simultaneously, while the front
>> surface was melting.
>>
>> Now one could speculate, what could have caused that different crust -
>> from the chip missing in one of the stones, we see that the material
>> beneath the brown crust isn't special (anyway, on the sides the fusion
>> crust for the same material is black).
>> Thus maybe the different color could stem from a lack of oxygen, when
>> it melted, on the lee-side of the stone in flight, where one has a low
>> pressure/partial vacuum?
>>
>> We think, one could even speak of a new category of orientation:
>>
>> COLOR-ORIENTED!
>>
>>
>> Well, if you like to have them, what shall we do with so special
>> specimens...
>> Let's make 20$/g to be among the very cheapest Chelyabinsk-offerers,
>> + 50cents for the lipping, where others would scream: oriented, oriented!
>> + 1.5$/g for the fantastic "color-orientation"...
>>
>> Makes 22$/g.
>>
>>
>> Fascinating, aren't they?
>>
>> Your Meteorite House Team
>>
>>
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Received on Wed 29 May 2013 02:35:06 PM PDT