The Gao -melt (H imb) is a wonderful meteorite to
look at. Here's a picture of a half stone owned by Keith Vazquez.
<http://www.meteoriteimpact.com/gaomelt.htm>
Best,
John Gwilliam
At 10:30 AM 3/15/2007, Zelimir Gabelica wrote:
Hello Bernd, list,
Bernd, thanks much for your wise thoughts and
advices. Gao is indeed a very popular meteorite,
probably because it is as showy as abundant in
weight and (different) shapes. I can understand
Steve's falling in love for these.
I also second your suggestion, namely that Steve
should do more to valorize his Gao collection.
This brings me to a question that is probably
puzzling most of us since a while.
You might not ignore that besides "our old good
friend Gao (H5)" (that actually carries the
official name "Gao-Guenié"), there are 2 other Gaos (or Gao-Guéniés):
1) Gao(b) that is a CR (S1), found by Eric
Twelker in a parcel full of "normal Gaos" sent
to him from Burkina Faso. The 2 small stones he
got weighed 344 g (Bernd, by the way, a slice of
that stuff is just outstanding! I bet you also
got one.... See Eric's site: there are 2 pieces left!)
2) The Gao-melt (H imb) described and put for
sale by Eric Olson. This stuff is definitely far
different from Gao (H5) in that, when cut, this
almost black meteorite shows "melts and rivers" just as Portales or others.
Definitely a weird stuff. See pictures on Eric's site.
E. Olson is reporting a tkw of 570+ grams.
However, I got a few years ago 3 such Gao-melt
individuals from a quite different source
(directly from Burkina, not from Eric's source)
that are exactly the same. They already showed a
weird outline when complete (uncut). Once cut,
not only they showed the strange metled parts
but also huge vugs, some of which reaching 20+ mm !!
E. Olson is anouncing on his site since a time
that these are "under study". Did someone got more recent news ?
Note: my source confirmed thet Gao imb and Gao
(H5) are (still being) found on the unique
strewnfield. To my knowledge, nothing is known
about the place where Gao(b) was found...
I suggest Steve starts inquiring about these
other 2 Gaos and perhaps envisages to extend
his collection to "Gao, Gao and Gao".
By the way, here are the tkw's I have in my archives:
Gao-Guénié (H5): [EMAIL PROTECTED] kg
Gao-Guénié (H imb): [EMAIL PROTECTED] g (Olson's site)
Gao-Guénié (b) (CR)): 2@@344 g (Twelker's site)
Could someone (along with the two Erics) provide an update for these figures ?
Thanks and have a nice day all,
Zelimir
A 16:33 15/03/2007 +0000, [EMAIL PROTECTED] a écrit :
Knock, knock !
"You seem to be building quite a collection of Gao! Go get 'em!"
"The next step in his obsession -- head for the strewn field."
Hello Steve and List,
First off: I must also admit that this is becoming a very impressive,
an awesome collection of Gao meteorites! Sincere congratulations!
The next best step after displaying them for all of us to see, would or could
now be to study them, to compare them, to look at their respective fusion
crusts, to describe their individual
characteristics, to do a little research on
their different degrees of weathering (and maybe even shock stage[s]), the
thickness or thinness of their fusion crusts, and so much more and then share
your observations with the List. This would give them a "life".
Of course, you might also consider constructing a special Gao info page:
dates of fall / find, classification, history,
repositories, strewn field parameters,
scientific papers / articles, and, and, and, ...
"The next step in his obsession -- head for the strewn field."
.. Well, why not!? Gao instead of London if the
risks involved are not too high!
He would surely come back with some personal finds or purchases.
Such specimens have an even higher, personal value!
Best regards,
Bernd
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Prof. Zelimir Gabelica
Université de Haute Alsace
ENSCMu, Lab. GSEC,
3, Rue A. Werner,
F-68093 Mulhouse Cedex, France
Tel: +33 (0)3 89 33 68 94
Fax: +33 (0)3 89 33 68 15
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