RT Journal Article
T1 Control mineralógico sobre la fijación de metales en procesos de oxidación de sulfuros
T1 Mineralogical control on the fixing oi metals in sulphide oxidation processes
A1 Capitán, M. A.
A1 Nieto Liñán, José Miguel
A1 Sáez Ramos, Reinaldo
A1 Ruiz de Almodóvar Sel, Gabriel
AB Gossans are the products of intense oxidation of massive sulphide deposits exposed in the surface. In the Filón Sur deposit (Tharsis, Huelva), a detailed petrological and mineralogical study of the gossan has allowed us to establish the distribution and abundance of the main mineral phases in the gossan profile. Among these mineral phases, beudantite is present in the whole profile, although it tends to concentrate tower the lower part, where this mineral can reach up to 40 %. Chemical analyses of beudantite have shown the presence of important amounts of As and Pb in their structure (up to 13 %As203 and 41% PbO). Taking into account that the content of As and Pb in the original sulphides is very low, beudantite acts as a sink for these two elements during the gossan formation process. This natural mechanism of As and Pb fixation can have important consequences for remediation of areas affected by acid mine drainage
PB Sociedad Geológica de España
YR 2002
FD 2002
LK http://hdl.handle.net/10272/9099
UL http://hdl.handle.net/10272/9099
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026