[meteorite-list] cleaning Gaos

[tett]

Hello List,

Looking for help in cleaning little Gaos.  I have one which has been in my 
collection for over 10 years and it is as black and fresh as any pristine 
meteorite I have seen.  I also have some Gaos which are also very nice but 
rusty lookng.

I cleaned one with acid and a light scrub.  This turned the stone chaulky 
white.  Some olive oil helped to turn it black but still not as nice as my 
1st beauty.

Does anyone have a secret recipe they are willing to share on how to clean 
Gaos?  Any help would be appreciated.

Cheers,

tett
Owen Sound, Ontario