http://www.mindat.org/u-993.html The mindat.org user blog written by Ricardo Pimentel http://www.mindat.org/article.php/107/Ricardo+Pimentel%E2%80%99s+Zeolite+Swap+List Fri, 24 Oct 2008 Published: Fri, 24 Oct 2008, Subject: Ricardo Pimentel’s Zeolite Swap List http://www.mindat.org/article.php/104/S.+Domingos+Mine...+journey+to+the+old+days Wed, 12 Dec 2007 Published: Wed, 12 Dec 2007, Subject: S. Domingos Mine... journey to the old days