[meteorite-list] Campo Preservation

[Gary K. Foote]

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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