[meteorite-list] caliche cleaning

[stan .]

I have seen several suggestions for cleaning caliche off of desert 
meteorites, but would anyone care to suggest if there would be any safe way 
to remove caliche specifically from a 2 kg+ cumulate eucrite? On a smaller 
piece I'd be willing to take a gamble and give it a shot, but needless to 
say the piece in question is not something that I would go dipping into a 
container of phosphoric acid just to see what happens..

Thanks in advance..

stan

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