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- Litoteca do LNEG Aljustrel, um espólio científico fundamental para a investigação da Faixa Piritosa Ibérica e da Zona de Ossa-MorenaPublication . Matos, João Xavier; Morais, Igor; Santos, Sara; Gonçalves, Pedro; Batista, Maria Joao; de Oliveira, Daniel Pipa Soares; Dias, Ruben PereiraSUMMARY: Since 2018 the LNEG’s Aljustrel drill core shed is dedicated to the southern Portugal collections distributed by Iberian Pyrite Belt (IPB) and Ossa-Morena Zone (OMZ). The archive includes exploration drill hole cores, soil, stream sediments and rock samples, technical reports, and a complete and detail map collection (1/5.000 and 1/25.000 scales), all organized in databases. Drill hole relog allow a better understanding of the subsurface being essential in stratigraphy, structural mapping, mineral exploration and metallogeny. Following the regional Smart Specialization Strategy defined by CCDR Alentejo to Geological Resources, the LNEG Aljustrel develops R&D programs dedicated to thematic mapping and mineral resources. Critical Raw Materials mineralizations are present at the archives like IPB VMS Cu-Zn-Pb(Au-Ag-Sn-Sb) and Fe-Mn deposits and OMZ sulphide-magnetite (Zn-Pb,Cu(Au)), magnetite and Cu(Au) veins. The preservation of the subsurface geological heritage is critical to the IPB and OMZ research and an institutional LNEG mission.
- Valorização de recursos minerais : contribuição do projecto MinReMol para uma recuperação sustentável do rénio a partir de resíduos mineirosPublication . Silva, Teresa; Figueiredo, M. Ondina; Santos, Renata; de Oliveira, Daniel Pipa Soares; Veiga, JP; Batista, Maria Joao
- Environmental assessment of Ni and Cd in topsoil and ground-level dust from urban playgrounds, public gardens and parks from Lisbon, PortugalPublication . Reis, Amélia; Patinha, Carla; Silva, Eduardo Ferreira da; Dias, Ana; Bartolomeu, Sofia; Sousa, António; Cachada, Anabela; Batista, Maria Joao; Prazeres, Cátia; Figueira, Rui; Sergio, Cecilia; Salgueiro, Rita; Neves, Orquídea; Duarte, Armando
- Towards the recovery of by-product metals from mine wastes : an X-Ray absorption spectroscopy study on the binding state of rhenium in debris from a centennial Iberian Pyrite Belt minePublication . Figueiredo, M. Ondina; Silva, Teresa; Veiga, JP; de Oliveira, Daniel Pipa Soares; Batista, Maria JoaoRhenium is a very scarce element, occurring in the Earth's crust mainly carried by molybdenite (MoS2). Due to a very low availability comparative to actual industrial demand, rhenium is nowadays one of the most expensive mineral commodities and an increased interest is focused on exploring residues resulting from a long-term mining, particularly of sulphide ore deposits. It is therefore noteworthy to assign the presence of rhenium (in a concentration up to 3 ppm) in the waste materials from the old sulphur factory at the abandoned mine of São Domingos (Iberian Pyrite Belt, Southeast Portugal), exploited since the Roman occupation of Iberia. Aiming at a potential sustainable recovery of rhenium as a by-product, X-ray near-edge absorption spectroscopy (XANES) was applied to clarify the Re-binding and mode of occurrence by comparing Re L3-edge XANES spectra obtained from mine waste samples (previously fully characterized by X-ray laboratory techniques) with similar spectra collected from Re-rich molybdenites (Mo1-xRexS2) and from Re-O model compounds configuring various valences and coordination environments of rhenium ions. Obtained results are commented, ruling out a possible Re-S binding and rather conforming with the binding of rhenium to oxygen in the analysed mine waste materials.
- El Complejo Calco-Alcalino de la Serra da Neve (SW Angola): trabajos en curso [Resumo]Publication . Prazeres, Cátia; Batista, Maria Joao; Lopes, R.; Barros, B.; Ferreira da Costa, P.; Labaredas, José; Guimarães, Fernanda; Rodrigues, José Feliciano; Cordeiro, DomingosRESUMEN: El Complejo Calco-Alcalino de la Serra da Neve (CACSN) constituye un conjunto de estructuras alcalinas volcánicas, subvolcánicas y plutónicas emplazadas en una tendencia general ONO-ESE a NOSE (Pereira y Moreira, 1978; Lopes y Caessa, 2021). Fue remapeado a escala 1:100.000 para la cartografía geológica del proyecto PLANAGEO y posteriormente fue una de las áreas seleccionadas para realizar exploración mineral para ETR-Nb-Ta a escala regional. Las campañas de campo incluyeron levantamientos con FRX portátil y SRG portátil, cuyos resultados mostraron patrones preliminares de distribución de ETR en las litologías del CACSN (Prazeres et al., en revisión). Los muestreos realizados durante el trabajo de campo permitieron estudios petrográficos y análisis con microsonda electrónica, que son la base para comprender la mineralogía de los ETR. Hasta ahora se ha demostrado que algunos carbonatos (bastnasita), fosfatos (apatito y xenotima), minerales de Zr (eudialita) y esfena incorporan cantidades apreciables de ETR, especialmente ETR ligeros.
- Carta geoambiental da região da Grande BeiraPublication . Oliveira, José Tomás; Milisse, Dino; Daudi, Elias Félix; Ramalho, Elsa; Fernandes, Judite; Quental, Lídia; Batista, Maria Joao; Dias, Ruben Pereira; Ussene, Ussene Vasco; Magaia, Almiro; Muchanga, André; Muchibane, Aníbal; Zeferino, Cátia Lídia; Balate, Gabriel; Gomane, Gertrudes; Cune, Grácio; Rebêlo, Luís Pina; Nave, Silvia; Manhiça, Vladimiro; Pereira, Aurete
- Geofísica aplicada à gestão da água subterrânea e ao ordenamento do território da cidade da BeiraPublication . Daudi, Elias Félix; Ramalho, Elsa; Fernandes, Judite; Batista, Maria Joao; Quental, Lídia; Dias, Ruben Pereira; Milisse, Dino; Ussene, Ussene Vasco; Oliveira, José Tomás; Cune, Grácio; Balate, Gabriel; Manhiça, Vítor
- Análise expedita de U e de razões Zr/Rb em solos e relação com a componente geológica na região de Nisa-Castelo de Vide, PortugalPublication . Prazeres, Cátia; Batista, Maria Joao; Silva, Teresa; Figueiredo, M. Ondina
- Distribuição de estanho em solos e em estevas da área envolvente das minas de Neves CorvoPublication . Batista, Maria Joao; Abreu, Maria Manuela; Pinto, M. Serrano
- Áreas potenciais de Portugal para recursos minerais do domínio públicoPublication . Carvalho, Jorge; Filipe, Augusto; Gonçalves, Pedro; Lisboa, Jose; Matos, João Xavier; Batista, Maria Joao; Salgueiro, Rute; de Oliveira, Daniel Pipa SoaresSUMMARY: Land-use planning is decisive for granting access to mineral resources. During the work to identify the actions to be taken for preparing the National Strategy for Geological Resources, a map of mineral potential areas for Portugal was produced. It provides the starting point scenario needed for the implementation of a methodology aimed at the delineation of mineral safeguarding areas.