[meteorite-list] Widmanstatten Pattern on the outside??

From: Galactic Stone & Ironworks <meteoritemike_at_meteoritecentral.com>
Date: Tue, 10 May 2011 08:59:03 -0400
Message-ID: <BANLkTinyTxmM8B3mwmp9rOM6wVjfSYZzrw_at_mail.gmail.com>

Hi Jay,

Yes, I have seen external widmanstatten patterns on many irons -
usually weathered ones.

Sometimes it is more obvious than others. It depends on the iron type
and the condition of the specimen.

See this Canyon Diablo. It was very oxidized, but was then treated
with the Pat Mulvany process. The outer rind of oxidation was removed
and now the internal widmanstatten pattern is visible on portions of
the outer surface.

http://www.galactic-stone.com/product/canyon-diablo-big-iron-meteorite-stable-nickel-silver-patina-144g

Best regards,

MikeG

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On 5/10/11, Jay Snyder <jayray27 at gmail.com> wrote:
> Hello list,
>
> I am curious if anyone has ever observed an iron meteorite with a
> widmanstatten pattern on the outside or I guess what would be the
> outside or a weathered iron meteorite? I have a very small SaW 005
> that shows the patten after cleaning with a mild vinegar solution,
> under the microscope. I've tried to capture some pictures, but am
> unable at this time through the scope. Very interesting indeed, and
> if anyone has had experiences with this I would like to hear about
> them or see them too.
> --
> Jason Snyder
> Amateur Meteor Hunter
> meteorseeker at cox.net
> Jayray27 at gmail.com
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Received on Tue 10 May 2011 08:59:03 AM PDT