[meteorite-list] Gebel Kamil iron is official now - 1.6 metric tons!?!?

From: Martin Altmann <altmann_at_meteoritecentral.com>
Date: Tue, 13 Jul 2010 14:30:50 +0200
Message-ID: <003201cb2287$3ae9eed0$6502a8c0_at_name86d88d87e2>

But is there a finest octahedrite among the chemical IAB/IIICD-complex....?
And are there coarsest octahedrites to be found among the IVAs?

I think, it's quite reasonable, not to give a structural type at that point
of time for the Egypt iron, if there were only shrapnels found, respectively
analyzed.
Shrapnels by their nature are always ataxitic.

Or was meanwhile a not so damaged individual found and examined?

Best!
Martin


-----Urspr?ngliche Nachricht-----
Von: meteorite-list-bounces at meteoritecentral.com
[mailto:meteorite-list-bounces at meteoritecentral.com] Im Auftrag von Jeff
Grossman
Gesendet: Dienstag, 13. Juli 2010 13:48
An: meteorite-list at meteoritecentral.com
Betreff: Re: [meteorite-list] Gebel Kamil iron is official now - 1.6 metric
tons!?!?

"Ataxite" is a structural term, like octahedrite and hexahedrite.
Modern classification of iron meteorites is based on the chemical group,
which can tell you something about the parent asteroid. The structural
classification is quasi-independent of the chemical classification,
inasmuch as members of each structural group can belong to multiple
chemical groups. So "ataxite" has not been replaced with "iron,
ungrouped." Both are correct.

When I used to edit MetBull, the heading on the description of this
meteorite would have said "Iron, ataxite (ungrouped)", but other editors
have abandoned this.

Jeff
Received on Tue 13 Jul 2010 08:30:50 AM PDT