RT Journal Article
T1 Weathering processes in waste materials from a mining area in a semiarid zone
A1 Navarro Hervás, Cortés
A1 Pérez Sirvent, Carmen
A1 Martínez Sánchez, Maria José
A1 García Lorenzo, María de la Luz
A1 Molina Ruiz, José
AB Chemical and mineralogical characterization of waste materials present in an abandoned Pb, Zn–Ag mining site (SE, Spain) was carried out. In unaltered rocks, the mineralogy is characterized by plagioclase, pyroxene, magnetite, ilmenite, amphibole, biotite and quartz. Trace-element contents of these samples represent unaltered values. In mine-waste materials, pH ranged from acidic to slightly acidic and trace-element content was generally high, especially for Pb and Zn, although there were also substantial As concentrations. X-ray diffraction results suggested that these samples have a complex mineralogy, including alteration products. Surficial materials in the study area were affected by weathering processes, generating supergene assemblages, including Fe and Mn oxides and hydroxides, carbonates, hydrated sulfates and jarosite. Knowledge of the geochemical processes that took place in the past and whichare still taking place provide an important tool for assessing associated environmental problems in this area.
PB Elsevier
SN 0883-2927
YR 2012
FD 2012
LK https://hdl.handle.net/20.500.14352/42985
UL https://hdl.handle.net/20.500.14352/42985
LA eng
NO Ministerio de Ciencia e Innovación (MICINN)
DS Docta Complutense
RD 19 abr 2025