[meteorite-list] Did I Destroy This End Cut

[David & Kitt Deyarmin]

I am processing some Uruacu Iron Meteorites for a fellow collector and they 
are covered in a brownish black material.

I was concerned that it was rust so I soaked them in a solution of NaHO but 
it had little effect, so I soaked one specimen over night in a chemical that 
literally eats rust without damaging the original metal.

It also had no effect on the material, so I figured it was just some sort of 
terrestrial matter.

It's not too hard to remove with my cleaning process so I'm not too worried 
about it.

But just to be sure I figured I would soak a small end cut in this solution 
for a couple days to see what would happen

Well it had no effect on the surface material but it did eat deeply into the 
surface of the cut face, I think it was strong enough to dissolve all of the 
non-iron material.

When I removed it from the solution it was black so I took it to my buffing 
wheel and this is the best I could get it to look:

http://s131.photobucket.com/albums/p298/BobaDebt/Uruacu/?action=view&current=280grec1.jpg

It will not take an etch BUT you can still see the cohenite worms and this 
piece is loaded with them.

So should I try to sand this piece down and hope it takes and etch or should 
I just try to sell it "as is"