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A comprehensive study at Sierra de Cartagena-La Unión (SE Spain) abandoned mine site was carried out to characterize the regime and water quality of the groundwater system after the mine closure. The system consists of five geologic fractured blocks belonging to the Alpujarride and Nevado-Filabride complexes. The aquifer units are composed of limes...
The environmental impact and potential-risk assessment of an abandoned sulphide-mining site in a semiarid climate is presented here, by the study case of Sierra de Cartagena–La Unión (SE Spain), a 2,500-year-old mining district extending over an area of 100km2. The regional map illustrates the existence of 12 open-pits, 1,902 mining wells, 2,351 wa...
The work shows the contamination of surface and ground waters due to acid mine drainage, the erosion of different types of mining waste. The waters are characterized by presenting high concentrations of metals (Zn, Cd, Cu, Pb), metalloids (As, Sb) and sulfates. The pH is variable predominance of acid pH in surface waters.
This work shows an environmental risk analysis of the mining-metallurgical waste of the Sierra Minera de Cartagena La Unión, Spain. For this purpose, the cartography and inventory of the different types of mining and metallurgical waste were carried out (open-pit spoils, post-flotation stores in tailings ponds, gravity concentration spoils, gossan...
In the North-eastern part of Spain (Pyrenean Range, Aran Vally) lead-zinc ore deposits are found. These ores had been mined for several decades and the exploitations ceased approximately fifty years ago. Nowadays the mining galleries are flooded and the mine waters outlets placed in the upper part of the catchments flow to the lowland streams to th...