[meteorite-list] CAI

From: drtanuki <drtanuki_at_meteoritecentral.com>
Date: Thu Apr 22 09:54:02 2004
Message-ID: <3C65A72B.BB0022ED_at_tkc.att.ne.jp>

Dear Michel,
  (1). Is this a polished surface? (2). And if held to a strong light and
shifted from 0 degree to 45 degree angle do they shine (reflect light
strongly)? (3). Third, apply a very, very small drop of vinegar to one
of the spots is there any observation (bubbles of gas being released).
Please let me know the results of those three tests and perhaps I have an
answer.

Sincerely, Dirk Ross...Tokyo

Bernd Pauli HD wrote:

> "Matson, Robert" wrote:
>
> > > http://www.caillou-noir.com/images/temp02005slice1.jpg
> >
> > Hmmm. They don't look like stereotypical CAI's to my eye.
> > Missing the circular/concentric symmetry. As stated earlier,
> > it would be most unusual to find CAI's in a non-carbonaceous
> > chondrite. My guess is an aqueous weathering product. I've
> > seen similar spots in some of the Mojave desert meteorites
> > I've found.
>
> ... the contrast between these "islands" and the surrounding matrix is
> too well defined and the white color of these inclusions almost too
> vivid.
>
> Bernd
>
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Received on Sat 09 Feb 2002 05:48:12 PM PST