Mindat.org - Jeff Weissman's blog http://www.mindat.org/u-9604.html The mindat.org user blog written by Jeff Weissman Interesting Mineral Quality Statistics http://www.mindat.org/blog.php/811/Interesting+Mineral+Quality+Statistics Mon, 05 Oct 2009 Published: Mon, 05 Oct 2009, Subject: Interesting Mineral Quality Statistics