[meteorite-list] Campo Preservation

From: Gary K. Foote <gary_at_meteoritecentral.com>
Date: Tue Jan 17 19:10:09 2006
Message-ID: <43CD40FA.2641.259515D_at_localhost>

Hi Adam,

Have you tried applying a dry polish first to see if it helps stabalize things? Just
inquiring.

Gary
http://www.meteorite-dealers.com

On 17 Jan 2006 at 13:49, Adam Hupe wrote:

> Hi Gary and List,
>
> This is a tough question to answer because each meteorite is different. In
> all cases that involve liquid polishing it is good to use distilled water or
> oil starting with coarse grits and going finer until the desired contrast is
> reached. I start with 180, then 220, then 360, then 600, then 1200 and if
> needed all the way up to 3000 grit. Sometimes I will stop at 360 or 600 if I
> start losing contrast between the chondrules and the matrix. I always dry
> the specimen afterwards using a halogen lamp and do a final dry finish by
> hand. If rust appears, I apply a second dry polish. The surfaces then seem
> to fall into equilibrium with their new alien environment (Earth's
> atmosphere).
>
> Take Care,
>
> Adam
>
>
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Received on Tue 17 Jan 2006 07:09:46 PM PST