http://www.mindat.org/u-993.html The mindat.org user blog written by Ricardo Pimentel http://www.mindat.org/article.php/1085/Narodni+Museum+-+Prague Sun, 23 Jan 2011 Published: Sun, 23 Jan 2011, Subject: Narodni Museum - Prague http://www.mindat.org/article.php/107/Ricardo+Pimentel%E2%80%99s+Zeolite+Swap+List Tue, 25 Oct 2011 Published: Tue, 25 Oct 2011, 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