3D Spatial Distribution of Arsenic in an Abandoned Mining Area: A Combined Geophysical and Geochemical Approach



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Ruiz Roso, Jesús and García Lorenzo, Mari Luz and Castiñeiras García, Pedro and Muñoz Martín, Alfonso and Crespo Feo, Elena (2020) 3D Spatial Distribution of Arsenic in an Abandoned Mining Area: A Combined Geophysical and Geochemical Approach. Minerals, 10 (1130). pp. 1-15. ISSN 2075-163X

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Official URL: https://doi.org/10.3390/min10121130


Abandoned mine wastes, containing high sulfide contents, are of particular concern because of the formation of acid mine drainage (AMD), becoming an active and harmful point source of potentially toxic elements (PTEs) to the environment. A detailed evaluation of the chemical and mineralogical composition of mining wastes is necessary to determine effective remediation actions. Due to the high amount of generated wastes as a result of mining and processing activities, the cost and time consumed for this characterization are limiting. Hence, efficient tools could be applied to predict the composition of these wastes and their spatial distribution. This study aims to determine the physico-chemical characterization of wastes from mining activities using geochemical and geophysical techniques. The obtained results, both geochemical and geophysical, allow us to locate areas with a high potential risk of contamination by As in an economic and simple way, and enable us to design detailed geochemical sampling campaigns. In addition, the fact that there are conductive fractures in depth suggests the possible circulation of contaminants through them as well as the preferential lines of circulation.

Item Type:Article
Uncontrolled Keywords:Arsenic; Soil contamination; Geochemical Characterization; Electromagnetic conductivity; Electrical resistivity tomography; Risk assessment
Subjects:Sciences > Physics > Geophysics
Sciences > Geology
Sciences > Geology > Geodynamics
Sciences > Geology > Geochemistry
Sciences > Geology > Petrology
ID Code:63421
Deposited On:17 Dec 2020 08:48
Last Modified:17 Dec 2020 11:34

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