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Potential accumulation of strategic elements in mining dams : from remining to rehabilitation

2025-04Journal article Open access
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datacite.subject.fosCiências Naturais::Ciências da Terra e do Ambiente
dc.contributor.authorGomes, Patrícia
dc.contributor.authorValente, Teresa
dc.contributor.authorGazire Lemos, mariana
dc.date.accessioned2025-05-28T14:16:30Z
dc.date.available2025-05-28T14:16:30Z
dc.date.issued2025-04
dc.description.abstractABSTRACT: Raw materials, from oil to industrial minerals, are essential to the efficient functioning of the world economy. However, the extraction of base metals, for example, allowed the mobilization and accumulation of large amounts of reactive wastes, triggering critical environmental problems. The Iberian Pyrite Belt, one of the largest metallogenetic provinces in the world, is an example of this, as it presents numerous abandoned mining exploitations that were closed without or with inadequate environmental remediation. However, Europe is particularly vulnerable, as it depends on importing these metals. In this context, the present study addresses the theme of remining, assuming premises of rehabilitation and circular economy. The work focused on one of the most Portuguese paradigmatic mining complexes - the São Domingos mine. The methodological protocol was based on drilling to characterize stream sediments. The results revealed an estimate of the economic potential of accumulated sediments, offering a hopeful and optimistic outlook. These suggest reusing critical elements, such as Ag and Sc. The information in this research aims to help the competent authorities build a recovery strategy based on the valorization of resources centered on the circular economy.eng
dc.description.abstractRESUMO: As matérias-primas, desde o petróleo aos minerais industriais, apresentam-se como essenciais ao funcionamento eficiente da economia mundial. Contudo, a extração de metais básicos, por exemplo, permitiu a mobilização e acumulação de grandes quantidades de rejeitos reativos, desencadeando sérios problemas ambientais. A Faixa Piritosa Ibérica, uma das maiores províncias metalogenéticas do mundo, é exemplo disso, pois apresenta inúmeras antigas explorações mineiras abandonadas, que foram encerradas sem ou com inadequada remediação ambiental. No entanto, a Europa está numa posição particularmente vulnerável, pois encontra-se dependente da importação desses metais. É neste contexto que o presente estudo aborda a temática da remineração, assumindo premissas de reabilitação e economia circular. O trabalho incidiu sobre um dos complexos mineiros portugueses mais paradigmáticos - a mina de São Domingos. O protocolo metodológico baseou-se na caracterização de sedimentos fluviais, através de sondagens. Os resultados revelaram uma estimativa do potencial económico dos sedimentos acumulados. Estes sugerem a possibilidade de reaproveitamento de elementos críticos, como a Ag e o Sc. As informações contidas nesta investigação visam auxiliar as autoridades competentes a construir uma estratégia de recuperação baseada na valorização de recursos, assente na economia circular.por
dc.identifier.citationGomes, P., Valente, T. & Lemos, M. (2025). Potential accumulation of strategic elements in mining dams : from remining to rehabilitation. In: Comunicações Geológicas, 2025, vol. 112, Fascículo Especial I, pp. 217-220. https://doi.org/10.34637/dtz1-d457
dc.identifier.doi10.34637/dtz1-d457
dc.identifier.eissn1647-581X
dc.identifier.issn0873-948X
dc.identifier.urihttp://hdl.handle.net/10400.9/5810
dc.language.isoeng
dc.peerreviewedyes
dc.publisherLNEG - Laboratório Nacional de Energia e Geologia
dc.relationINSTITUTE OF EARTH SCIENCES
dc.relationImpact of Acid Mine Drainage on the environmental quality and potential accumulation of strategic metals in water dams located in the Iberian Pyrite Belt
dc.relation.hasversionhttps://www.lneg.pt/wp-content/uploads/2025/04/42_Gomes-et-al.pdf
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectMining sediments
dc.subjectDrilling
dc.subjectRemining
dc.subjectRehabilitation
dc.subjectCircular economy
dc.subjectSedimentos mineiros
dc.subjectSondagens
dc.subjectRemineração
dc.subjectReabilitação
dc.subjectEconomia circular
dc.titlePotential accumulation of strategic elements in mining dams : from remining to rehabilitationeng
dc.title.alternativeAcumulação potencial de elementos estratégicos em barragens mineiras : da remineração à reabilitaçãopor
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleINSTITUTE OF EARTH SCIENCES
oaire.awardTitleImpact of Acid Mine Drainage on the environmental quality and potential accumulation of strategic metals in water dams located in the Iberian Pyrite Belt
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04683%2F2020/PT
oaire.awardURIhttp://hdl.handle.net/10400.9/5809
oaire.citation.endPage220
oaire.citation.issueEspecial I
oaire.citation.startPage217
oaire.citation.titleComunicações Geológicas
oaire.citation.volume112
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamPOR_NORTE
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameGomes
person.familyNameValente
person.familyNameGazire Lemos
person.givenNamePatrícia
person.givenNameTeresa
person.givenNamemariana
person.identifier.orcid0000-0002-8128-7837
person.identifier.orcid0000-0002-7293-3825
person.identifier.orcid0000-0002-9629-3332
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
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Volume 112 (2025) Fascículo Especial I - XI Congresso Nacional de Geologia