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Acid mine drainage from Pan de Azucar Mine, and possible arsenic input in Pozuelos Lagoon basin, Argentina

Sulfide oxidation in tailings impoundments, especially pyrite, produces acid mine drainage (AMD), which is one of the most serious environmental problems caused by mining. Pan de Az?car Mine is located in the Altiplano Region of Northwest Argentina. The mine is situated at an altitude of 3,300 m and the annual precipitation is 350 mm. Mining operations ceased in 1990 without setting any closure plan. Pb-Zn-Ag metals were recovered after a benefaction process that included milling and flotation. Authors: Jesica Murray, Alicia Kirschbaum, Bernhard Dold. Published by InfoMine Inc. 2013.
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