[meteorite-list] CAIs In Ordinary Chondrites

From: drtanuki <drtanuki_at_meteoritecentral.com>
Date: Thu Apr 22 09:54:03 2004
Message-ID: <3C65ACF8.21F8EBFF_at_tkc.att.ne.jp>

Michel,
   The problem is not the photograph! Just do the three tests I asked (
and Mark has suggested) and report to the list. The photo is fine. 95%
chance for an answer! DR

Mark Fox wrote:

> 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 06:12:57 PM PST