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Influence of tailings from a sulfide mine on drainage water quality, 60 years after its abandonment. A case study in SW Portugal

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Resumo:The GeoMatRe project aims to find low-cost solutions for water and sediment rehabilitation using raw geomaterials, in abandoned mines of the Iberian Pyritic Belt. One of our case studies is the Caveira mine in southwestern Portugal, where large piles of mining waste, containing significant amounts of metals, record the long history of its exploitation for gold (Au) and silver (Ag). After the exhaustion of its reserves, the extraction of the remaining metals (cooper (Cu), lead (Pb) and zinc (Zn)) and sulphur (S) continued, until its abandonment during the 60s of 20th century. This work has two objectives: (i) to study the influence of mine and mine tailings drainage on water quality by analysing the dissolved and particulate material in drainage waters, and (ii) to determine whether there are differences in the contamination level of these waters according to the different weather conditions of the last two winters.
Autores principais:Araújo, J.F.
Outros Autores:Albuquerque, M.T.D.; Silva, N.; Silva, R. da
Assunto:Potentially toxic elements Sulphide mine Caveira mine Water quality Elementos potencialmente tóxicos Mina de sulfuretos Mina de Caveira Qualidade da água
Ano:2025
País:Portugal
Tipo de documento:artigo original
Tipo de acesso:acesso aberto
Instituição associada:Instituto Politécnico de Castelo Branco
Idioma:inglês
Origem:Repositório Científico do Instituto Politécnico de Castelo Branco

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