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! http://www.mindat.org/forum.php?read,6,260066,260066#msg-260066 Thu, 20 Jun 2013 09:52:02 +0000 Phorum 5.2.15a http://www.mindat.org/forum.php?read,6,260066,260077#msg-260077 http://www.mindat.org/forum.php?read,6,260066,260077#msg-260077
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.]]> Paul Brandes General Mon, 07 May 2012 00:50:50 +0000 http://www.mindat.org/forum.php?read,6,260066,260066#msg-260066 http://www.mindat.org/forum.php?read,6,260066,260066#msg-260066 James Em General Sun, 06 May 2012 22:31:37 +0000