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Geology of the recently discovered massive and stockwork sulphide mineralization at Semblana, Rosa Magra and Monte Branco, Neves–Corvo mine region, Iberian Pyrite Belt, Portugal

2021-01Journal article Open access
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dc.contributor.authorPereira, Zélia
dc.contributor.authorMatos, João Xavier
dc.contributor.authorSolá, A. Rita
dc.contributor.authorBatista, Maria Joao
dc.contributor.authorSalgueiro, Rute
dc.contributor.authorRosa, Carlos
dc.contributor.authorAlbardeiro, Luis
dc.contributor.authorMendes, Márcia
dc.contributor.authorMorais, Igor
dc.contributor.authorde Oliveira, Daniel Pipa Soares
dc.contributor.authorPacheco, Nelson
dc.contributor.authorAraújo, Vítor
dc.contributor.authorCastelo Branco, José M.
dc.contributor.authorNeto, Rodrigo
dc.contributor.authorLains Amaral, João
dc.contributor.authorInverno, Carlos
dc.contributor.authorOliveira, José T.
dc.date.accessioned2022-01-04T12:19:39Z
dc.date.available2023-01-01T01:30:18Z
dc.date.issued2021-01
dc.description.abstractAbstract The recently discovered massive and stockwork sulphide mineralization of Semblana-Rosa Magra and Monte Branco, situated ESE of the Neves–Corvo volcanogenic massive sulphide (VMS) deposit in the Iberian Pyrite Belt (IPB) is presented. Geological setting and tectonic model is discussed based on proxies such as palynostratigraphy and U–Pb zircon geochronology. The mineralization is found within the IPB Volcano-Sedimentary Complex (VSC) Lower sequence, which includes felsic volcanic rocks (rhyolites) with U–Pb ages in zircons of 359.6 ± 1.6 Ma, and black shales of the Neves Formation of late Strunian age. Massive sulphides are enveloped by these shales, implying that felsic volcanism, mineralization and shale sedimentation are essentially coeval. This circumstance is considered highly prospective, as it represents an important exploration vector to target VMS mineralization across the IPB, in areas where the Lower VSC sequence is present. The Upper VSC sequence, with siliciclastic and volcanogenic sedimentary rocks of middle–late Visean age, shows no massive mineralization but a late Tournaisian (350.9 ± 2.3 Ma) volcanism with disseminated sulphides was also identified. Nevertheless, stratigraphic palynological gaps were found within the Strunian and in the Tournaisian sediments, between the Lower and Upper VSC sequences, reflecting probable erosion and uplift mechanisms linked with extensional tectonics. The Semblana and Monte Branco deposits and the Rosa Magra stockwork are enclosed by tectonic sheets that dismembered the VSC sequence in a fold-and-thrust tectonic complex, characteristic of the NE Neves–Corvo region. The methodologies used allow a geological comparison between Neves–Corvo and other IPB mine regions such as Lousal–Caveira, Herrerias, Tharsis and Aznalcollar.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPereira et al. 2021, ‘Geology of the recently discovered massive and stockwork sulphide mineralization at Semblana, Rosa Magra and Monte Branco, Neves–Corvo mine region, Iberian Pyrite Belt, Portugal’, Geological Magazine, vol. 158, nº 7, pp. 1253-1268. doi:10.1017/S0016756820001284pt_PT
dc.identifier.doihttps://doi.org/10.1017/S0016756820001284pt_PT
dc.identifier.eissn1469-5081
dc.identifier.issn0016-7568
dc.identifier.urihttp://hdl.handle.net/10400.9/3659
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherCambridge University Presspt_PT
dc.relationAGC-Lundin Mining/ LNEG project IPBVECTORS (Geologic, stratigraphic and lithogeochemical characterization of the geological units of the Algaré structure, Rosário Antiform and the Semblana massive sulphide mineralization)pt_PT
dc.relationEXPLORA project (Definition of new geological, geophysical and geochemical knowledge vectors applied to Neves-Corvo northern region)pt_PT
dc.relationOp ALT20-03- 0145-FEDER-000025, funded by Alentejo 2020, Portugal 2020 and European Union (ERDF)pt_PT
dc.relation.publisherversionhttps://www.cambridge.org/core/journals/geological-magazine/article/abs/geology-of-the-recently-discovered-massive-and-stockwork-sulphide-mineralization-at-semblana-rosa-magra-and-monte-branco-nevescorvo-mine-region-iberian-pyrite-belt-portugal/6A2F8B6D6DCD2625941647A73D40F7B7pt_PT
dc.subjectNeves-Corvo minept_PT
dc.subjectMineral explorationpt_PT
dc.subjectPalynostratigraphypt_PT
dc.subjectU–Pb geochronologypt_PT
dc.subjectIberian Pyrite Beltpt_PT
dc.subjectPortugalpt_PT
dc.titleGeology of the recently discovered massive and stockwork sulphide mineralization at Semblana, Rosa Magra and Monte Branco, Neves–Corvo mine region, Iberian Pyrite Belt, Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceBaton Rouge, USApt_PT
oaire.citation.endPage1268pt_PT
oaire.citation.issue7pt_PT
oaire.citation.startPage1253pt_PT
oaire.citation.titleGeological Magazinept_PT
oaire.citation.volume158pt_PT
person.familyNamePereira
person.familyNameXavier Matos
person.familyNameSolá
person.familyNameBatista
person.familyNameSalgueiro
person.familyNameAlbardeiro
person.familyNameSilva Mendes
person.familyNameMorais
person.familyNamede Oliveira
person.familyNamePacheco
person.familyNameLains Amaral
person.familyNameInverno
person.givenNameZélia
person.givenNameJoão Manuel
person.givenNameA. Rita
person.givenNameMaria Joao
person.givenNameRute
person.givenNameLuís
person.givenNameMárcia Cristina
person.givenNameIgor
person.givenNameDaniel Pipa Soares
person.givenNameNelson
person.givenNameJoão
person.givenNameCarlos
person.identifier92033
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person.identifier.ridAGY-5000-2022
person.identifier.scopus-author-id7005481948
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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