New insights into mineralogy and geochemistry of allanite-bearing Mediterranean coastal sands from Northern Greece

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorAristotle Univ Thessaloniki-
Autor(es): dc.contributorUniv Athens-
Autor(es): dc.contributorKarlsruhe Inst Technol-
Autor(es): dc.contributorRhodes Univ-
Autor(es): dc.contributorKatholieke Univ Leuven-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorNCSR Demokritos-
Autor(es): dc.contributorUniv Perugia-
Autor(es): dc.creatorTzifas, I. T.-
Autor(es): dc.creatorPapadopoulos, A.-
Autor(es): dc.creatorMisaelides, P.-
Autor(es): dc.creatorGodelitsas, A.-
Autor(es): dc.creatorGoettlicher, J.-
Autor(es): dc.creatorTsikos, H.-
Autor(es): dc.creatorGamaletsos, P. N.-
Autor(es): dc.creatorLuvizotto, G. [UNESP]-
Autor(es): dc.creatorKarydas, A. G.-
Autor(es): dc.creatorPetrelli, M.-
Autor(es): dc.creatorNoli, F.-
Autor(es): dc.creatorKantarelou, V-
Autor(es): dc.creatorKontofakas, A.-
Autor(es): dc.creatorHatzidimitriou, A.-
Data de aceite: dc.date.accessioned2022-02-22T00:09:01Z-
Data de disponibilização: dc.date.available2022-02-22T00:09:01Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2019-05-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.chemer.2019.05.002-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/196292-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/196292-
Descrição: dc.descriptionAllanite-bearing black coastal sands of Kavala (N. Greece) were studied using a combination of single-crystal XRD, EMPA, mu-XRF, bulk ICP-MS, LA-ICP-MS, mu-XANES and gamma-ray spectrometry. The sands are rich in REE (Sigma REE + Y: 4010 to 10,810 mg/kg), Th (236-1205 mg/kg) and other critical metals such as Nb, Ta and Co. The main REE- and Th-hosts are allanite and titanite. The allanite unit cell parameters were calculated whereas its formula was found to be (REE0.470Ca1. 499Th0.031) (Ti0.031Fe1.089+3Al1.880) (Si-2.906Al0.094O12) (OH). The mu- XANES spectra showed that LREE are present in trivalent oxidation state. Analyses of the non-magnetic sand fractions showed higher LREE (12,470 mg/kg) due to accumulation of allanite. The materials showed elevated radioactivity ranging from 885 +/- 13 to 3467 +/- 20 Bq/kg. The obtained results provide new insights on the provenance of the sands, the abundance of REE, Th, and other immobile elements, and offer new clues for potential exploration and exploitation.-
Descrição: dc.descriptionAristotle Univ Thessaloniki, Dept Chem, Thessaloniki 54124, Greece-
Descrição: dc.descriptionAristotle Univ Thessaloniki, Sch Geol, Dept Mineral Petrol & Econ Geol, Thessaloniki 54124, Greece-
Descrição: dc.descriptionUniv Athens, Dept Geol & Geoenvironm, Panepistimiopolis 15784, Zografou, Greece-
Descrição: dc.descriptionKarlsruhe Inst Technol, Inst Photon Sci & Synchrotron Radiat, Eggenstein Leopoldshafen, Germany-
Descrição: dc.descriptionRhodes Univ, Dept Geol, Grahamstown, South Africa-
Descrição: dc.descriptionKatholieke Univ Leuven, Dept Mat Engn, Kasteelpk Arenberg 44, B-3001 Leuven, Belgium-
Descrição: dc.descriptionUniv Estadual Paulista, Inst Geociencias & Ciencias Exatas, Dept Petrol & Metalogenia, BR-13506900 Rio Claro, Brazil-
Descrição: dc.descriptionNCSR Demokritos, Inst Nucl Phys, Aghia Paraskevi 15310, Greece-
Descrição: dc.descriptionUniv Perugia, Dept Earth Sci, Piazza Univ, I-06100 Perugia, Italy-
Descrição: dc.descriptionUniv Estadual Paulista, Inst Geociencias & Ciencias Exatas, Dept Petrol & Metalogenia, BR-13506900 Rio Claro, Brazil-
Formato: dc.format247-267-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier B.V.-
Relação: dc.relationGeochemistry-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectKavala-
Palavras-chave: dc.subjectBeach placer-
Palavras-chave: dc.subjectREE-
Palavras-chave: dc.subjectThorium-
Palavras-chave: dc.subjectAllanite-
Palavras-chave: dc.subjectmu-XRF-
Palavras-chave: dc.subjectSR-XANES-
Título: dc.titleNew insights into mineralogy and geochemistry of allanite-bearing Mediterranean coastal sands from Northern Greece-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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