2 documents found, page 1 of 1
Mineralogical and geochemical characterization of surface soils and waste piles...
André da Silva Costa, Óscar Filipe; Reis, Amelia; Nogueira, Pedro; Simões, Pedro Pimenta; Kumoleha, A.ABSTRACT: The Preguiça and Vila Ruiva mines, located in the Ossa Morena Zone, Beja district, were explored for Fe-Zn-Pb in the early and mid-20th century. This study aims to reassess their mining potential by creating geochemical maps using modern exploration techniques combined with petrographic and mineralogical analyses. These maps resulted from field measurements obtained by portable X-ray fluorescence (XRF...
Copiapite group: occurrence and properties in mining contamination scenarios
Barroso, Ana; Valente, Teresa; antunes, Isabel Margarida; Reis, Amelia; Correia Neves, IsabelABSTRACT: The copiapite group shows a wide range of chemical compositions, allowing the identification of several mineral phases (e.g., aluminocopiapite and magnesiocopiapite). These minerals, typically observed in mining environments, are formed from evaporation and acid mine drainage (AMD) precipitation. In these areas, the copiapite has been studied to comprehend its ability to store some potentially toxic e...