Evaluation of the mining potential of the São Domingos mine wastes, Iberian Pyrite Belt, Portugal

Detalhes bibliográficos
Autor(a) principal: Vieira, Alexandre
Data de Publicação: 2020
Outros Autores: Matos, João, Lopes, Luís, Martins, Ruben
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/29032
Resumo: Abstract: The outcropping São Domingos Iberian Pyrite Belt deposit was mined since Roman time and between 1857 and 1966. The mine is formed by a 120 m depth flooded open pit and galleries until 420 m depth. Associated with felsic volcanic rocks and black shales of the Volcano-Sedimentary Complex, the deposit is formed by massive sulphide and stockwork ore (py, ccp, sp, ga, tt, apy) and related supergene enrichment ore (hematite gossan and covellite/chalcocite). Different mine wastes classes were mapped: gossan, felsic volcanic and shales, shales and landfill. Considering the CONASA mining waste characterization (162 shafts and 160 reverse circulation boreholes/LNEG database), new inferred resources are presented, using block modelling software: 2.38 Mt @ 0.77 g/t Au and 8.26 g/t Ag in non-conditioned volumes. Considering all evaluated wastes, including urban areas, an inferred resource of 4.0 Mt @ 0.64 g/t Au and 7.30 g/t Ag is presented, corresponding to a metal content of 82,878 oz t Au and 955,753 oz t Ag. Keywords: São Domingos mine, mining wastes resources, Iberian Pyrite Belt.
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spelling Evaluation of the mining potential of the São Domingos mine wastes, Iberian Pyrite Belt, PortugalSão Domingos minemining wastes resourcesIberian Pyrite BeltAbstract: The outcropping São Domingos Iberian Pyrite Belt deposit was mined since Roman time and between 1857 and 1966. The mine is formed by a 120 m depth flooded open pit and galleries until 420 m depth. Associated with felsic volcanic rocks and black shales of the Volcano-Sedimentary Complex, the deposit is formed by massive sulphide and stockwork ore (py, ccp, sp, ga, tt, apy) and related supergene enrichment ore (hematite gossan and covellite/chalcocite). Different mine wastes classes were mapped: gossan, felsic volcanic and shales, shales and landfill. Considering the CONASA mining waste characterization (162 shafts and 160 reverse circulation boreholes/LNEG database), new inferred resources are presented, using block modelling software: 2.38 Mt @ 0.77 g/t Au and 8.26 g/t Ag in non-conditioned volumes. Considering all evaluated wastes, including urban areas, an inferred resource of 4.0 Mt @ 0.64 g/t Au and 7.30 g/t Ag is presented, corresponding to a metal content of 82,878 oz t Au and 955,753 oz t Ag. Keywords: São Domingos mine, mining wastes resources, Iberian Pyrite Belt.LNEG, – Laboratório Nacional de Energia e Geologia IP2021-01-29T18:37:23Z2021-01-292020-12-03T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/29032http://hdl.handle.net/10174/29032engVieira, A.; Matos, J.; Lopes, L., Martins, R. 2020. Evaluation of the mining potential of the São Domingos mine wastes, Iberian Pyrite Belt, Portugal. Comunicações Geológicas (2020) 107, III, 91-100 ISSN: 0873-948X; e-ISSN: 1647-581X. https://www.lneg.pt/wp-content/uploads/2020/07/Volume_107_III.pdfhttps://www.lneg.pt/wp-content/uploads/2020/07/Volume_107_III.pdfalexandrev@outlook.ptjoao.matos@lneg.ptlopes@uevora.ptrubenvm@uevora.ptVieira, AlexandreMatos, JoãoLopes, LuísMartins, Rubeninfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:25:50Zoai:dspace.uevora.pt:10174/29032Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:18:48.924822Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Evaluation of the mining potential of the São Domingos mine wastes, Iberian Pyrite Belt, Portugal
title Evaluation of the mining potential of the São Domingos mine wastes, Iberian Pyrite Belt, Portugal
spellingShingle Evaluation of the mining potential of the São Domingos mine wastes, Iberian Pyrite Belt, Portugal
Vieira, Alexandre
São Domingos mine
mining wastes resources
Iberian Pyrite Belt
title_short Evaluation of the mining potential of the São Domingos mine wastes, Iberian Pyrite Belt, Portugal
title_full Evaluation of the mining potential of the São Domingos mine wastes, Iberian Pyrite Belt, Portugal
title_fullStr Evaluation of the mining potential of the São Domingos mine wastes, Iberian Pyrite Belt, Portugal
title_full_unstemmed Evaluation of the mining potential of the São Domingos mine wastes, Iberian Pyrite Belt, Portugal
title_sort Evaluation of the mining potential of the São Domingos mine wastes, Iberian Pyrite Belt, Portugal
author Vieira, Alexandre
author_facet Vieira, Alexandre
Matos, João
Lopes, Luís
Martins, Ruben
author_role author
author2 Matos, João
Lopes, Luís
Martins, Ruben
author2_role author
author
author
dc.contributor.author.fl_str_mv Vieira, Alexandre
Matos, João
Lopes, Luís
Martins, Ruben
dc.subject.por.fl_str_mv São Domingos mine
mining wastes resources
Iberian Pyrite Belt
topic São Domingos mine
mining wastes resources
Iberian Pyrite Belt
description Abstract: The outcropping São Domingos Iberian Pyrite Belt deposit was mined since Roman time and between 1857 and 1966. The mine is formed by a 120 m depth flooded open pit and galleries until 420 m depth. Associated with felsic volcanic rocks and black shales of the Volcano-Sedimentary Complex, the deposit is formed by massive sulphide and stockwork ore (py, ccp, sp, ga, tt, apy) and related supergene enrichment ore (hematite gossan and covellite/chalcocite). Different mine wastes classes were mapped: gossan, felsic volcanic and shales, shales and landfill. Considering the CONASA mining waste characterization (162 shafts and 160 reverse circulation boreholes/LNEG database), new inferred resources are presented, using block modelling software: 2.38 Mt @ 0.77 g/t Au and 8.26 g/t Ag in non-conditioned volumes. Considering all evaluated wastes, including urban areas, an inferred resource of 4.0 Mt @ 0.64 g/t Au and 7.30 g/t Ag is presented, corresponding to a metal content of 82,878 oz t Au and 955,753 oz t Ag. Keywords: São Domingos mine, mining wastes resources, Iberian Pyrite Belt.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-03T00:00:00Z
2021-01-29T18:37:23Z
2021-01-29
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10174/29032
http://hdl.handle.net/10174/29032
url http://hdl.handle.net/10174/29032
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Vieira, A.; Matos, J.; Lopes, L., Martins, R. 2020. Evaluation of the mining potential of the São Domingos mine wastes, Iberian Pyrite Belt, Portugal. Comunicações Geológicas (2020) 107, III, 91-100 ISSN: 0873-948X; e-ISSN: 1647-581X. https://www.lneg.pt/wp-content/uploads/2020/07/Volume_107_III.pdf
https://www.lneg.pt/wp-content/uploads/2020/07/Volume_107_III.pdf
alexandrev@outlook.pt
joao.matos@lneg.pt
lopes@uevora.pt
rubenvm@uevora.pt
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv LNEG, – Laboratório Nacional de Energia e Geologia IP
publisher.none.fl_str_mv LNEG, – Laboratório Nacional de Energia e Geologia IP
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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