Geological impact of some tailings dams in Sardinia,Italy |
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| Authors: | Felice Di Gregorio Raniero Massoli-Novelli |
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| Institution: | (1) Department of Earth Sciences, University of Cagliari, Via Trentino 51, 09127 Cagliari, Italy |
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| Abstract: | This article deals with the results of a survey carried out in Sardinia on both active and abandoned tailings dams, and we also discuss the geological impact of tailings dams of two mines: the Masua mine, a large syngenetic Pb-Zn deposit located in Cambrian limestones, and the Montevecchio mine, a Pb-Zn vein deposit near a Hercynian granite intrusion. The characteristics and metal content of material in the dams were analyzed. A high contamination of heavy metals (Pb, Zn, Cd, Cu) was found both in the soils and water of Rio Montevecchio, a stream draining the tailings dams and other mining operations in the area.The study indicates that a control plan to minimize heavy metal pollution must be drawn up for all mines of the area, whether active or abandoned. |
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