[meteorite-list] CAIs in Ordinary Chondrites

From: Mark Fox <unclefireballmtf_at_meteoritecentral.com>
Date: Thu Apr 22 09:54:02 2004
Message-ID: <20020209230431.83610.qmail_at_web14905.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
>
>
>
> ----- Message d'origine -----
> De : Rhett Bourland <rbourlan_at_evansville.net>
> À : Michel Franco <MICH-FRANCO_at_wanadoo.fr>
> Envoyé : samedi 9 février 2002 02:13
> Objet : RE: [meteorite-list] CAI
>
>
> > Hi Michel,
> > Could you post a picture please? I've not really
> heard of CAI's being
> found
> > in ordinary chondrites before but I would guess
> that it is possible.
> > Best wishes,
> > Rhett Bourland
> > www.asteroidmodels.com
> > www.asteroidmodels.com/personal
> > www.meteoritecollectors.org
> >
> > -----Original Message-----
> > From: meteorite-list-admin_at_meteoritecentral.com
> >
> [mailto:meteorite-list-admin_at_meteoritecentral.com]On
> Behalf Of Michel
> > Franco
> > Sent: Friday, February 08, 2002 5:00 PM
> > To: METEORITELIST
> > Subject: [meteorite-list] CAI
> >
> >
> > Dear List
> >
> > I think that many list members are busy in Tucson,
> but if one has some
> time
> > to lighten my ignorance I will really appreciate.
> >
> > It happened that I found few new meteorites
> recently and that, having cut
> > them into slices for analyses i discovered some
> white clasts inside what
> > seems to be a weathered chondrite. It does not
> look like a terrestrial
> > contamination into cracks and I was wondering if
> it could be a CAI.
> >
> > Thanks in advance.
> >
> > Best wishes
> >
> >
> > Michel FRANCO
> > Caillou Noir
> > 100 Chemin des Campènes
> > 74400 CHAMONIX - FRANCE
> > http://www.themeteorites.com
> >
> >
> >
> > ______________________________________________
> > Meteorite-list mailing list
> > Meteorite-list_at_meteoritecentral.com
> >
>
http://www.pairlist.net/mailman/listinfo/meteorite-list
> >
>
>
>
>
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Received on Sat 09 Feb 2002 06:04:31 PM PST