Is there a safe way to remove gypsum/selenite over growths from mineral specimens other than "club soda" aka carbonated water? I have a few nice Murdochite specimens from the Mex-Tex mine that are covered with gypsum crystals. http://www.mindat.org/forum.php?read,19,255332,255332#msg-255332 Sat, 18 May 2013 20:39:37 +0000 Phorum 5.2.15a http://www.mindat.org/forum.php?read,19,255332,257919#msg-257919 http://www.mindat.org/forum.php?read,19,255332,257919#msg-257919 Stephen Rose Mineral Cleaning and Preparation Thu, 12 Apr 2012 15:18:56 +0000 http://www.mindat.org/forum.php?read,19,255332,257916#msg-257916 http://www.mindat.org/forum.php?read,19,255332,257916#msg-257916 Alfredo Petrov Mineral Cleaning and Preparation Thu, 12 Apr 2012 14:54:37 +0000 http://www.mindat.org/forum.php?read,19,255332,257915#msg-257915 http://www.mindat.org/forum.php?read,19,255332,257915#msg-257915
Jolyon]]> Jolyon & Katya Ralph Mineral Cleaning and Preparation Thu, 12 Apr 2012 14:36:16 +0000 http://www.mindat.org/forum.php?read,19,255332,257883#msg-257883 http://www.mindat.org/forum.php?read,19,255332,257883#msg-257883
Bill Barr
Canadian-American, eh?]]> Bill Baker Barr Mineral Cleaning and Preparation Thu, 12 Apr 2012 04:13:27 +0000 http://www.mindat.org/forum.php?read,19,255332,257881#msg-257881 http://www.mindat.org/forum.php?read,19,255332,257881#msg-257881 Ron Layton Mineral Cleaning and Preparation Thu, 12 Apr 2012 02:11:22 +0000 http://www.mindat.org/forum.php?read,19,255332,255392#msg-255392 http://www.mindat.org/forum.php?read,19,255332,255392#msg-255392 Steve Hardinger Mineral Cleaning and Preparation Thu, 15 Mar 2012 16:06:58 +0000 http://www.mindat.org/forum.php?read,19,255332,255376#msg-255376 http://www.mindat.org/forum.php?read,19,255332,255376#msg-255376 Rock Currier Mineral Cleaning and Preparation Thu, 15 Mar 2012 13:17:54 +0000 http://www.mindat.org/forum.php?read,19,255332,255365#msg-255365 http://www.mindat.org/forum.php?read,19,255332,255365#msg-255365 Ron Layton Mineral Cleaning and Preparation Thu, 15 Mar 2012 12:27:42 +0000 http://www.mindat.org/forum.php?read,19,255332,255358#msg-255358 http://www.mindat.org/forum.php?read,19,255332,255358#msg-255358 Rock Currier Mineral Cleaning and Preparation Thu, 15 Mar 2012 11:49:39 +0000 http://www.mindat.org/forum.php?read,19,255332,255337#msg-255337 http://www.mindat.org/forum.php?read,19,255332,255337#msg-255337
Don't remove the gypsum.

I find that the gypsum association is more interesting, and generally more valuable, than the murdochite or gypsum alone.]]> Steve Hardinger Mineral Cleaning and Preparation Thu, 15 Mar 2012 02:43:16 +0000 http://www.mindat.org/forum.php?read,19,255332,255332#msg-255332 http://www.mindat.org/forum.php?read,19,255332,255332#msg-255332 Ron Layton Mineral Cleaning and Preparation Thu, 15 Mar 2012 00:21:56 +0000