[meteorite-list] Help with Kunya-Urgench

From: Chladnis Heirs <news_at_meteoritecentral.com>
Date: Thu, 6 May 2010 13:03:36 +0200
Message-ID: <001f01caed0b$cc6f4d70$07b22959_at_name86d88d87e2>

Hi Henry and Gary,

in my opinion this specimen is definitely no Kunya-Urgench.

In principle Kunya-Urgench, if fresh, is of a light-grey to witish
appearance.

But Kunya seemed to have to be exposed to humidity on the place of fall,
so that it has more or less very often hefty stainings from rust.

Kunya was a large mass - the second largest stone meteorites in existence.
Scattered around the impact pit were collected hundreds of small and
smallest fragments and a few larger ones.
Some of the hunters, who collected them, are here also on the list.

The small fragmets, usually in the weight range form 1-10 grams, are almost
all very oxidized, but nevertheless some show here and there still some
fresh corners.

The larger ones (like necessary for having such a cut like Henry has)are
often somewhat better preserved.
The clean ones are withish grey mottled with tiny brown and ochre rust
spots, the somewhat more oxidized ones, have larger areas of rust.

But all have still parts of the original fresh matrix preserved.

Here some examples of various degrees of oxidation of Kunya.
http://www.thetricottetcollection.com/met_kunyaurgench.html

http://www.meteoritelabels.com/images/Kunya.jpg

http://www.meteorite-martin.de/images/meteor/kunyaurgench.jpg


Henry's specimen display a fully oxidized matrix, hence it is an old and
weathered chondrite, which certainly doesn't belong to the fall of
Kunya-Urgench.

I'd recommend to return it to the seller.

Best!
Martin


-----Urspr?ngliche Nachricht-----
Von: meteorite-list-bounces at meteoritecentral.com
[mailto:meteorite-list-bounces at meteoritecentral.com] Im Auftrag von Gary
Fujihara
Gesendet: Donnerstag, 6. Mai 2010 04:07
An: hxmendoza
Cc: meteorite-list at meteoritecentral.com
Betreff: Re: [meteorite-list] Help with Kunya-Urgench

Henry Mendoza's specimen, possibly Kunya-Urgench:

http://bigkahuna-meteorites.com/Images/KU.jpg

On May 5, 2010, at 3:59 PM, hxmendoza wrote:

> Thanks for the responses folks. I've tried replying to some of you
> emails directly. I hope you received them as I don't know how it works
> when the emails are sent thru this list.
>
> I work graveyards eight on and six off. Tonite is the first day of my
> eight day stretch so it's off to work I go. I will try to send pics of
> my mystery endpiece over the next couple days or so to whomever asks
> for them, as time permits. I sent them to Gary Fujihara as he said he
> may post them thru his website for me. Thanks once again Gary. Oh and
> did I tell you folks that Gary's a swell guy?! LOL!!
>
> Ann thank you. And yes I don't believe the dealer in question to be
> deceitful just very disorganized. I really believe that.
>
> Martin, my endpiece matrix does not look like that. On the Meteorite
> Bulletin listing for the Kunya, the only puc that matches mine is the
> one posted by a person called Brice D. Hornback, or something like
> that. It's a little slice in an acrylic box.
> Gotta go. If work permits I'll keep reading. Nite to you all.
>
> Regards,
> Henry Mendoza
> Aurora, CO
>
> Sent from my iPod
>
>
>
>
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Gary Fujihara
Big Kahuna Meteorites (IMCA#1693)
105 Puhili Place, Hilo, Hawai'i 96720
http://bigkahuna-meteorites.com/
http://shop.ebay.com/fujmon/m.html
(808) 640-9161

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Received on Thu 06 May 2010 07:03:36 AM PDT