[meteorite-list] GAO's

[Martin Altmann]

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

-----Ursprüngliche Nachricht-----
Von: meteorite-list-bounces at meteoritecentral.com
[mailto:meteorite-list-bounces at meteoritecentral.com] Im Auftrag von Peter
Marmet
Gesendet: Donnerstag, 15. März 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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