Dear Svend,
I have read the report of EMTT and i agree with you. I know EMTT and
Emmanuel Dransart, who performed the analyses, the purpose being just to
bring "an opinion on the metallic structure of a meteorite's fragment".
Therefore, a polished and etched surface was observed with a binocular, with
a picture showing the surface that was observed.
The picture displays "a kamacite grain with Neumann lines" and some
"silicated phases, rich in pyroxene and olivine".
The conclusion of Emmanuel Dransart is that it is an Og Octahedrite, such as
Ziz that was also studied at the same lab (EMTT). And as you said, Svend,
pairing with Ziz is not claimed, but as far as the 1st examination can tell,
their grain size are similar and it is the same type.
All the best,
Frederic Beroud
www.meteoriteshow.com
IMCA #2491
----- Original Message -----
From: "Dr. Svend Buhl" <[EMAIL PROTECTED]>
To: "Meteorite Mailing List" <[email protected]>
Sent: Sunday, August 24, 2008 3:45 PM
Subject: [meteorite-list] follow up on Ziz vs. new iron RFSPOD August 14
to all interested,
The Hmanis asked me to forward a follow up on their new irons including a
34kg specimen they had displayed at this year's Enisheim/France meteorite
fair. One of the new finds acquired from another dealer was kindly posted
by Michael Johnson as Rocks from Space Picture of the Day on August 14.
M. Hmani informed me that he had meanwhile been issued a "certificate" by
the Etudes Metallurgiques et de Traitment Thermique (EMTT) which arrives
to the conclusion that "grain size and structure of the new material is
identical with Ziz (NWA 854)". Mr. Hmani was so kind to forward me the
certificate on my request and allowed me to upload the paper on my
website: http://www.meteorite-recon.com/en/Meteoritensammlung.htm (see
Inventory # B-0243)
To my understanding the paper states that the questioned iron is an og
octehedrite such as Ziz. According to the certificate a microscopic
analysis of an etched surface has been performed but no element mapping or
neutron activation scan. I assume, the certificate does not intend to
claim a pairing. Please note that this is my personal opinion.
cheers
Svend
www.meteorite-recon.com
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