[meteorite-list] GAO's

From: Martin Altmann <altmann_at_meteoritecentral.com>
Date: Fri, 16 Mar 2007 00:00:59 +0100
Message-ID: <00a501c76755$cc5ce6b0$e46dfea9_at_name86d88d87e2>

Anyone guesses about the tkw of Gao?

I learned that Carion, the master, alone brought 500kgs of Gao during the
decades together.

Hehe, I have also a Gao(c) oder (d) or (e),
in a batch of dusty Gaos from Carion, there was one, which turned out after
cutting not to be a Gao, but a different ordinary chondrite, rather an L
than a H.
Unfortunately it had only 10g, so it still lays around here unclassified.

Btw. I personally don't like, if the crust from the more weathered and later
finds are pimped to look black again.
Uuuuh I saw some early Gaos, they are stunners!

Martin

-----Urspr?ngliche Nachricht-----
Von: meteorite-list-bounces at meteoritecentral.com
[mailto:meteorite-list-bounces at meteoritecentral.com] Im Auftrag von Peter
Marmet
Gesendet: Donnerstag, 15. M?rz 2007 20:11
An: Meteoritenliste
Betreff: Re: [meteorite-list] GAO's

Hello Bernd, Zelimir and All,

don't forget Marcin Cimala's great GAO site: http://www.gao-guenie.com/

Peter


bernd.pauli at paulinet.de wrote:

> Bonjour, Salut, Hello,
>
> Zelimir wrote: "I bet you also got one"
>
> Here's what I got - Please enjoy (reading about them)!
>
> Gao-ishly,
>
> Bernd
>
> 1. Gao-Guenie (H5 or H4-5):
>
> - thin section: shows fusion crust and shock veins - several
> (radiating)
> pyroxene chondrules - pyroxenes outnumber olivines.
> - crusted individual, two perfect chondrule pits (chondrules
> missing) - 2.65 g
> - lenticular dome-shaped frothy vesicular oriented individual,
> distinct rollover lip - 4.1 g
> - cut slice / brownish matrix / abundant metal / crust / brecciated
> - 8.5 g
> - triangular crusted individual with window showing several
> chondrules, one side warty - 23.26 g
> - showpiece purchased from Michael Cottingham: a fully crusted
> individual, shallow regmaglypts
> on one side and flight marks - 194 grams
>
> 2. Gao-Guenie (imb):
>
> Trapezoidal endcut. FeNi flakes close to stream channels preferred
> orientation. Delicate black
> veinlets traverse the melt flow. On one side there are remnants of
> ordinary Gao matrix texture.
> A few small troilite patches visible - 2.18 grams
>
> 3. Gao-Guenie (CR):
>
> Oval fragment with large chondrule that contains intrachondrule
> aggregates - 0.2 gram
>
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Received on Thu 15 Mar 2007 07:00:59 PM PDT