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dc.contributor.authorBindi, L
dc.contributor.authorZaccarini, F
dc.contributor.authorBonazzi, P
dc.contributor.authorGrammatikopoulos, T
dc.contributor.authorTsikouras, B
dc.contributor.authorStanley, Christopher
dc.contributor.authorGaruti, G
dc.date.accessioned2020-10-15T13:37:04Z
dc.date.available2020-10-15T13:37:04Z
dc.date.issued2020-03-08
dc.date.submitted2020-10-13
dc.identifier.citationBindi, L.; Zaccarini, F.; Bonazzi, P.; Grammatikopoulos, T.; Tsikouras, B.; Stanley, C.; Garuti, G. Eliopoulosite, V7S8, A New Sulfide from the Podiform Chromitite of the Othrys Ophiolite, Greece. Minerals 2020, 10, 245.en_US
dc.identifier.doi10.3390/min10030245
dc.identifier.urihttp://hdl.handle.net/10141/622860
dc.description.abstractThe new mineral species, eliopoulosite, V7S8, was discovered in the abandoned chromium mine of Agios Stefanos of the Othrys ophiolite, located in central Greece. The investigated samples consist of massive chromitite hosted in a strongly altered mantle tectonite, and are associated with nickelphosphide, awaruite, tsikourasite, and grammatikopoulosite. Eliopoulosite is brittle and has a metallic luster. In plane-reflected polarized light, it is grayish-brown and shows no internal reflections, bireflectance, and pleochroism. It is weakly anisotropic, with colors varying from light to dark greenish. Reflectance values of mineral in air (Ro, Re’ in %) are: 34.8–35.7 at 470 nm, 38–39 at 546 nm, 40–41.3 at 589 nm, and 42.5–44.2 at 650 nm. Electron-microprobe analyses yielded a mean composition (wt.%) of: S 41.78, V 54.11, Ni 1.71, Fe 1.1, Co 0.67, and Mo 0.66, totali 100.03. On the basis of Σatoms = 15 apfu and taking into account the structural data, the empirical formula of eliopoulosite is (V6.55Ni0.19Fe0.12Co0.07Mo0.04)Σ = 6.97S8.03. The simplified formula is (V, Ni, Fe)7S8 and the ideal formula is V7S8, which corresponds to V 58.16%, S 41.84%, total 100 wt.%. The density, based on the empirical formula and unit-cell volume refined form single-crystal structure XRD data, is 4.545 g·cm−3. The mineral is trigonal, space group P3221, with a = 6.689(3) Å, c = 17.403(6) Å, V = 674.4(5) Å3, Z = 3, and exhibits a twelve-fold superstructure (2a × 2a × 3c) of the NiAs-type subcell with V-atoms octahedrally coordinated by S atoms. The distribution of vacancies is discussed in relation to other pyrrhotite-like compounds. The mineral name is for Dr. Demetrios Eliopoulos (1947–2019), a geoscientist at the Institute of Geology and Mineral Exploration (IGME) of Greece and his widow, Prof. Maria Eliopoulos (nee Economou, 1947), University of Athens, Greece, for their contributions to the knowledge of ore deposits of Greece and to the mineralogical, petrographic, and geochemical studies of ophiolites, including the Othrys complex. The mineral and its name have been approved by the Commission of New Minerals, Nomenclature, and Classification of the International Mineralogical Association (No. 2019-96).en_US
dc.language.isoenen_US
dc.publisherMDPI AGen_US
dc.relation.urihttps://doi.org/10.3390/min10030245en_US
dc.rightsopenAccessen_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleEliopoulosite, V7S8, A New Sulfide from the Podiform Chromitite of the Othrys Ophiolite, Greeceen_US
dc.typeJournal Articleen_US
dc.identifier.eissn2075-163X
dc.identifier.journalMineralsen_US
dc.identifier.volume10en_US
dc.identifier.issue3en_US
dc.identifier.startpage245 - 245en_US
pubs.organisational-group/Natural History Museum
pubs.organisational-group/Natural History Museum/Science Group
pubs.organisational-group/Natural History Museum/Science Group/Earth Sciences
pubs.organisational-group/Natural History Museum/Science Group/Earth Sciences/Economic and Environmental Earth Sciences
pubs.organisational-group/Natural History Museum/Science Group/Functional groups
pubs.organisational-group/Natural History Museum/Science Group/Functional groups/Scientific Associates
dc.embargoNot knownen_US
elements.import.authorBindi, Len_US
elements.import.authorZaccarini, Fen_US
elements.import.authorBonazzi, Pen_US
elements.import.authorGrammatikopoulos, Ten_US
elements.import.authorTsikouras, Ben_US
elements.import.authorStanley, Cen_US
elements.import.authorGaruti, Gen_US
dc.description.nhm© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).en_US
dc.subject.nhmeliopoulositeen_US
dc.subject.nhmsulfideen_US
dc.subject.nhmchromititeen_US
dc.subject.nhmAgios Stefanos mineen_US
dc.subject.nhmOthrysen_US
dc.subject.nhmophioliteen_US
dc.subject.nhmGreeceen_US
refterms.dateFOA2020-10-15T13:37:04Z


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