[meteorite-list] CAIs In Ordinary Chondrites

From: Mark Fox <unclefireballmtf_at_meteoritecentral.com>
Date: Thu Apr 22 09:54:02 2004
Message-ID: <20020209230726.62893.qmail_at_web14911.mail.yahoo.com>

Feb. 9, 2002

Greetings Mr. Franco and Fellow Meteorite Enthusiasts!

Nice Picture! Nevertheless, the shiny, white clasts
in your scan resemble metallic iron-nickel grains ---
at least to me. If possible, you may want to try to
isolate a wee piece of the clasts in question and see
if it has any reaction to a drop of a dilute solution
of sulfuric, hydrochloric, or acetic acid (vinegar).
Examination under a microscope while conducting this
test may help catch any sign of fizzling.

Also, seeing whether or not the white areas are
malleable will of course help draw conclusions of a
metallic origin and not a product of weathering.

If they are truely metal grains, there may be more
than just iron-nickel and trace amounts of other
elements in them.
  
Long strewn fields!

Mark Fox
Newaygo, MI USA

--- Michel Franco <MICH-FRANCO_at_wanadoo.fr> wrote:
> Rhett, Dirk, Paul, and list,
>
> Please find a pict of the white clasts at
>
>
http://www.caillou-noir.com/images/temp02005slice1.jpg
>
> Or visit my new caillou-noir site at
> http://www.caillou-noir.com
>
> The meteorite with white clasts is temp 02005.
>
> Be indilugent I am working on the site and will
> hopefully improve it in the
> next days.
>
> Best wishes
>
> Michel FRANCO
> Caillou Noir
> 100 Chemin des Campènes
> 74400 CHAMONIX - FRANCE
> http://www.themeteorites.com


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Received on Sat 09 Feb 2002 06:07:26 PM PST