A Fluid Inclusion and Critical/Rare Metal Study of Epithermal Quartz-Stibnite Veins Associated with the Gerakario Porphyry Deposit, Northern Greece

dc.contributor.author Stergiou, Christos L.
dc.contributor.author Melfos, Vasilios
dc.contributor.author Voudouris, Panagiotis
dc.contributor.author Papadopoulou, Lambrini
dc.contributor.author Spry, Paul
dc.contributor.author Peytcheva, Irena
dc.contributor.author Dimitrova, Dimitrina
dc.contributor.author Stefanova, Elitsa
dc.contributor.department Geological and Atmospheric Sciences
dc.date.accessioned 2022-01-27T20:43:13Z
dc.date.available 2022-01-27T20:43:13Z
dc.date.issued 2022-01-17
dc.description.abstract The Gerakario Cu-Au porphyry deposit in the Kilkis ore district, northern Greece, contains epithermal quartz-stibnite veins on the eastern side of the deposit, which crosscut a two-mica gneiss. Metallic mineralization in these veins consists of stibnite + berthierite + native antimony + pyrite + arsenopyrite, and minor marcasite, pyrrhotite, chalcopyrite, löllingite, and native gold. Bulk geochemical analyses of the ore reveal an enrichment in critical and rare metals, including Ag, Au, Bi, Ce, Co, Ga, La, and Sb. Analysis of stibnite with LA-ICP-MS showed an enrichment in base metals (As, Cu, Pb), as well as weak to moderate contents of critical and rare metals (Ag, Bi, Ce, La, Re, Sm, Th, Ti, Tl). A statistical analysis of the trace elements show a positive correlation for the elemental pairs Ce-La, Ce-Sb, and La-Sb, and a negative correlation for the pair Bi-Sb. Fluid inclusions in the A-type veins of the porphyry-style mineralization show the presence of fluid boiling, resulting in a highly saline aqueous fluid phase (35.7 to 45.6 wt.% NaCl equiv.) and a moderately saline gas phase (14 to 22 wt.% NaCl equiv.) in the system H2O-NaCl-KCl at temperatures varying between 380° and 460 °C and pressures from 100 to 580 bar. Mixing of the moderate saline fluid with meteoric water produced less saline fluids (8 to 10 wt.% NaCl equiv.), which are associated with the epithermal quartz-stibnite vein mineralization. This process took place under hydrostatic pressures ranging from 65 to 116 bar at a depth between 600 and 1000 m, and at temperatures mainly from 280° to 320 °C.
dc.description.comments This article is published as Stergiou, Christos L., Vasilios Melfos, Panagiotis Voudouris, Lambrini Papadopoulou, Paul G. Spry, Irena Peytcheva, Dimitrina Dimitrova, and Elitsa Stefanova. "A Fluid Inclusion and Critical/Rare Metal Study of Epithermal Quartz-Stibnite Veins Associated with the Gerakario Porphyry Deposit, Northern Greece." Applied Sciences 12, no. 2 (2022): 909. doi:10.3390/app12020909. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/OrD8BWEr
dc.language.iso en
dc.publisher © 2022 by the authors
dc.source.uri https://doi.org/10.3390/app12020909 *
dc.subject.disciplines DegreeDisciplines::Physical Sciences and Mathematics::Earth Sciences::Geochemistry
dc.subject.keywords rare metals
dc.subject.keywords critical metals
dc.subject.keywords rare earth elements
dc.subject.keywords stibnite
dc.subject.keywords epithermal veins
dc.subject.keywords Gerakario
dc.subject.keywords Kilkis ore district
dc.subject.keywords Serbo-Macedonian metallogenic province
dc.subject.keywords mineral chemistry
dc.subject.keywords fluid-inclusions
dc.title A Fluid Inclusion and Critical/Rare Metal Study of Epithermal Quartz-Stibnite Veins Associated with the Gerakario Porphyry Deposit, Northern Greece
dc.type Article
dspace.entity.type Publication
relation.isAuthorOfPublication a62262dd-880b-4366-b68a-552fccbdcab4
relation.isOrgUnitOfPublication 29272786-4c4a-4d63-98d6-e7b6d6730c45
File
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
2022-Spry-FluidInclusion.pdf
Size:
4.51 MB
Format:
Adobe Portable Document Format
Description:
Collections