Engineering Queen’s University, Kingston, ON K7L 3N6, Canada E-mail: jamieson@geol.queensu.ca E LEMENTS , V...Cu, Zn, Pb, and Cd. On the other hand, orogenic gold deposits are less likely to produce acid mine drainage...Hammarstrom 2003). However, wastes from orogenic gold deposits may liberate As from arsenopyrite during...Territories from 1949 to 1999, ore was roasted to release gold, transforming arsenopyrite into Fe oxides (maghemite...collected from streams draining a former gold-mining district in France. They show how the transport of |