Trace Elements in Magnetite from the Pagoni Rachi Porphyry Prospect, NE Greece: Implications for Ore Genesis and Exploration

dc.contributor.authorMavrogonatos, Constantinos
dc.contributor.authorVoudouris, Panagiotis
dc.contributor.authorBerndt, Jasper
dc.contributor.authorKlemme, Stephan
dc.contributor.authorZaccarini, Federica
dc.contributor.authorSpry, Paul G.
dc.contributor.authorMelfos, Vasilios
dc.contributor.authorTarantola, Αlexandre
dc.contributor.authorKeith, Manuel
dc.contributor.authorKlemd, Reiner
dc.contributor.authorHaase, Karsten
dc.date.accessioned2020-01-09
dc.date.available2023-10-16T07:57:42Z
dc.date.created2019
dc.date.issued2020-01-09
dc.description.abstractMagnetite is a common accessory phase in various types of ore deposits. Its trace element content has proven to have critical implications regarding petrogenesis and as guides in the exploration for ore deposits in general. In this study we use LA-ICP-MS (laser ablation-inductively coupled plasma-mass spectrometry) analyses of trace elements to chemically characterize magnetite from the Pagoni Rachi Cu–Mo–Re–Au porphyry-style prospect, Thrace, northern Greece. Igneous magnetite mostly occurs as euhedral grains, which are commonly replaced by hematite in fresh to propylitic-altered granodiorite porphyry, whereas, hydrothermal magnetite forms narrow veinlets or is disseminated in sodic/potassic-calcic altered (albite + K-feldspar + actinolite + biotite + chlorite) granodiorite porphyry. Magnetite is commonly associated with chalcopyrite and pyrite and locally exhibits martitization. Laser ablation ICP-MS analyses of hydrothermal magnetite yielded elevated concentrations in several trace elements (e.g., V, Pb, W, Mo, Ta, Zn, Cu, and Nb) whereas Ti, Cr, Ni, and Sn display higher concentration in its magmatic counterpart. A noteworthy enrichment in Mo, Pb, and Zn is an unusual feature of hydrothermal magnetite from Pagoni Rachi. High Si, Al, and Ca values in a few analyses of hydrothermal magnetite imply the presence of submicroscopic or nano-inclusions (e.g., chlorite, and titanite). The trace element patterns of the hydrothermal magnetite and especially the decrease in its Ti content reflect an evolution from the magmatic towards the hydrothermal conditions under decreasing temperatures, which is consistent with findings from analogous porphyry-style deposits elsewhere.en
dc.identifier.citationMinerals 9.12 (2019): 725. <https://doi.org/10.3390/min9120725>
dc.identifier.doihttps://doi.org/10.3390/min9120725
dc.identifier.issn2075-163X
dc.identifier.opus-id12601
dc.identifier.urihttps://open.fau.de/handle/openfau/12601
dc.identifier.urnurn:nbn:de:bvb:29-opus4-126019
dc.language.isoen
dc.publisherMDPI
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.de
dc.subjectmagnetite
dc.subjectmagmatic
dc.subjecthydrothermal
dc.subjecttrace elements
dc.subjectLA-ICP-MS
dc.subjectporphyry
dc.subjectexploration
dc.subject.ddcDDC Classification::5 Naturwissenschaften und Mathematik :: 55 Geowissenschaften, Geologie :: 554 Geowissenschaften Europas
dc.titleTrace Elements in Magnetite from the Pagoni Rachi Porphyry Prospect, NE Greece: Implications for Ore Genesis and Explorationen
dc.typearticle
dcterms.publisherFriedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
local.date.prevpublished2019-11-24
local.journal.issue12
local.journal.titleMinerals
local.journal.volume9
local.sendToDnbfree*
local.subject.fakultaetNaturwissenschaftliche Fakultät / Department Geographie und Geowissenschaften
local.subject.importimport
local.subject.sammlungUniversität Erlangen-Nürnberg / Eingespielte Open Access Artikel / Eingespielte Open Access Artikel 2019
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