[meteorite-list] RE: Polishing slices?

[Martin Altmann]

Hi Darren,

and carbonaceous are often not so fine for a high polish.
Nothing more horrible than a shiny, glossy Allende!
I mean, it's not harmfull to the stone or it won't loose any value, it's a
question of personal taste,
as it's with any stone.  NWA 869 high polished f.e.: superb!! - we so many
examples posted here to the list too.
Uuuh once I saw highly polished Moon. I really didn't like it!

Buckleboo!
Martin


----- Original Message ----- 
From: "Christian Anger" <christian.anger at aon.at>
To: <cynapse at charter.net>; <meteorite-list at meteoritecentral.com>
Sent: Monday, March 07, 2005 11:14 PM
Subject: [meteorite-list] RE: Polishing slices?


> Hi Darren,
>
> I polish all my meteorite slices, endcuts, windowed meteorites  with
sanding
> paper by hand.
> I begin at 80 grit and then polish
> with 120,220,400,800,1000,1500,2000,3000 grit sanding paper.
>
> A long hard work, but the result is like a dream.
> This does not work with friable material.
> There you should stop at 400 grit appr.
>
> or e.g. most of the Howardites or some Eucrites are also
> no good polishing candidates.
>
> Also it depends on the overall composition of the meteorite.
> Sometimes you loose contrast and sometimes you increase contrast.
>
> The best way to check how a material will look like when it's polished is
to
> make it wet. This appearance will show you how a mirror polished face will
> look like. Test yourself.
>
> best wishes,
>
> Christian
>
>
> IMCA #2673
> www.austromet.com
>
> Christian Anger
> Korngasse 6
> 2405 Bad Deutsch-Altenburg
> AUSTRIA
>
> email: christian.anger at aon.at
>