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dc.contributor.authorYesares Ortiz, María Dolores 
dc.contributor.authorPiña, Rubén
dc.contributor.authorGonzález Jiménez, José M.
dc.contributor.authorSáez Ramos, Reinaldo 
dc.contributor.authorRuiz de Almodóvar Sel, Gabriel 
dc.contributor.authorFanlo, Isabel
dc.contributor.authorPons, J. M.
dc.contributor.authorVega, Raquel
dc.identifier.citationYesares, L., Piña, R., González-Jiménez, J. M., Sáez, R., Ruíz de Almodóvar, G., Fanlo, I., Manuel Pons, J., & Vega, R. (2023). Distribution of critical metals in evolving pyrite from massive sulfide ores of the Iberian Pyrite Belt. In Ore Geology Reviews (Vol. 153, p. 105275). Elsevier BV.
dc.identifier.issn1872-7360 (electrónico)
dc.description.abstractWith >90 known deposits containing original reserves of >2400 Mt of sulfide ore, the Iberian Pyrite Belt (IPB) is the largest volcanogenic massive sulfide (VMS) province on Earth. In these evolving mineral systems, texturally different pyrite exhibits characteristic mineralogy and trace element fingerprints. Pyrite (Py-1), which is well preserved in the polymetallic ores that crystallized at the earliest stage of VMS deposit formation, consists of kernels of pyrite framboids surrounded by concentric colloform bands and ended by faceted outlines. It is rich in some metals like Pb, Zn, Sb and As (mostly hosted as nano-to-micron-sized particles, including galena, tetrahedrite and arsenopyrite) but depleted in Cu, Co and Bi. In contrast, pyrite from the pyritic and Cu-rich ore overprinted by late fluids exhibits spongy-looking (Py-2) or homogenous (Py-3) cores surrounded by external facets with crystallographic continuity across the whole single grains due to re-crystallization. Py-2 is depleted in most trace elements with the exception of Au and Bi, which occur both in solid solutions and as nano-to-micronsized inclusions. Py-3 has the highest Cu, Ag, Co and Ni (mainly associated to nano-to-micron-sized particles of tennantite, chalcopyrite and gersdorffite) and the lowest Au contents in the form of native gold. The progressive increase in metal contents from inner to outer parts of Py-1 matches with the onset of the economic metal endowment of VMS deposits in the IPB, whereas Py-2 and Py-3 are associated with metal shoot processes that led to both leached and high-grade ores, very likely when mafic rocks were emplaced into the footwall of the depositses_ES
dc.description.sponsorshipThis research is a contribution to the projects CGL2016-79204-R, PID2019-111715GB-I00 which are supported by the Spanish Government, and 18/IF/6347 granted by Science Foundation Ireland (SFI). The authors thank Cambridge Minerals for access to drill core, sampling assistance and the ongoing collaboration. We are also grateful to Teodosio Donaire for his constructive suggestions in petrogenetic aspects of volcanogenic rocks in the IPB as well as Dany Savard and Audrey Lavoie of LabMaTer, UQAC, for their assistance during the laser ablation analyses. Authors would also like to acknowledge the use of Servicio General de Apoyo a la Investigaci´on-SAI, Universidad de Zaragoza.es_ES
dc.relation.isversionofPublisher’s version
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subject.otherVMS depositses_ES
dc.subject.otherTrace elementses_ES
dc.subject.otherElectron backscatter diffraction (EBSD)es_ES
dc.subject.otherIberian Pyrite Beltes_ES
dc.titleDistribution of critical metals in evolving pyrite from massive sulfide ores of the Iberian Pyrite Beltes_ES
dc.subject.unesco2506 Geologíaes_ES

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