Mindat.org - Alfredo Petrov's articles http://www.mindat.org/u-275.html The mindat.org user blog written by Alfredo Petrov Mining Tourmaline in North Korea (and similar acts of mineralogical desperation) http://www.mindat.org/article.php/1466/Mining+Tourmaline+in+North+Korea+%28and+similar+acts+of+mineralogical+desperation%29 Wed, 21 Mar 2012 Published: Wed, 21 Mar 2012, Subject: Mining Tourmaline in North Korea (and similar acts of mineralogical desperation) Iris Quartz http://www.mindat.org/article.php/1335/Iris+Quartz Thu, 03 Nov 2011 Published: Thu, 03 Nov 2011, Subject: Iris Quartz Anorthite and Native Brass http://www.mindat.org/article.php/976/Anorthite+and+Native+Brass Thu, 21 Oct 2010 Published: Thu, 21 Oct 2010, Subject: Anorthite and Native Brass Jade http://www.mindat.org/article.php/883/Jade Tue, 19 Jan 2010 Published: Tue, 19 Jan 2010, Subject: Jade A Scientific Study of the Absorption of Evil by Vivianite http://www.mindat.org/article.php/137/A+Scientific+Study+of+the+Absorption+of+Evil+by+Vivianite Tue, 01 Jan 2008 Published: Tue, 01 Jan 2008, Subject: A Scientific Study of the Absorption of Evil by Vivianite