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Cleaning copper specimens

Posted by James Cheshire  
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James Cheshire May 06, 2012 11:31PM
I have some samples of amygdaloidal copper in basalt from Michigan. They have quite a lot of adhering rock dust, and I would like to clean them off. I don't want to use water, as that might tarnish the copper. Is there anything else I could use for this? Thanks!
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Paul Brandes May 07, 2012 01:50AM
James,

Please see the following thread for more information:
Cleaning native copper

You may want to try using compressed air if you have access to such equipment.
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