[meteorite-list] Polishing Chondrite Slices

[Impactika at aol.com]

In a message dated 5/3/2007 1:27:02 P.M. Mountain Standard Time,  
marcin at polandmet.com writes:
> Hi, This is Tom Phillips, the microscope  guy,  which really means the
> polishing guy.  I have to agree,  Ghubara is both  tough to polish with out 
> scratches
> and  when I revisited some polished slices I  had made a year ago, all  were
> good except the Ghubara.  It had to be  repolished before  any scope time.
>
> Perhaps some one can suggest a sealing   method that would work for your
> sphere?

I think in that case You  must make the same "tricks" like with iron 
meteorites.
Using oil +heating  or try to put it into red devil solution to remove all 
acids that can start  rusting. Ghubara must fall in very "bad" place, thats 
why he is now heavy  ruster.

-----[ MARCIN CIMALA ]-----[ I.M.C.A.#3667 ]-----
 
I am sorry but I have to disagree with both of you.
Ghubara is not a ruster. In fact it is quite stable. Look at this  one:  

_http://www.impactika.com/catpix/AB145.jpg_ 
(http://www.impactika.com/catpix/AB145.jpg) 
 
I have had it a couple years, it is in a Riker mount, no special care at  
all. And it is just fine. And I have a few other slices of Ghubara, all are in  
Rikers, and there is no rust on anyone of them.
In fact, I think that Ghubara is a very pretty, very interesting meteorite,  
and greatly under-rated. But then I like those dark meteorites, they look like 
 thousands of stars in a dark night sky.  

Anne M. Black
www.IMPACTIKA.com
IMPACTIKA at aol.com
President,  I.M.C.A. Inc.
www.IMCA.cc
 



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