 | | Journal (article/letter/editorial) | | Institute of Geology, Goce Delcev 89, 2000 Stip, Macedonia Abstract: Several ophiolite bodies that have...chromium ore are located in the Vardar Zone of Macedonia. Three relatively small (maximum 15 4 km) bodies...ïŹrst time in Macedonia, they are typical of ophiolitic chromitite, dominated by the lauriteâerlichmanite...also by the presence of Cu in solid solution in laurite, and the occurrence of a Cu-sulïŹde rim around the...platinum-group minerals (PGM); laurite; chromitite; ophiolite complex; Vardar Zone; Macedonia. 1. Introduction |  | Sideridis, Alkiviadis, Zaccarini, Federica, Koutsovitis, Petros, Grammatikopoulos, Tassos, Tsikouras, Basilios, Garuti, Giorgio, Hatzipanagiotou, Konstantinos (2021) Chromitites from the Vavdos ophiolite (Chalkidiki, Greece): Petrogenesis and geotectonic settings; constrains from spinel, olivine composition, PGE mineralogy and geochemistry. Ore Geology Reviews, 137. 104289pp. doi:10.1016/j.oregeorev.2021.104289 | Journal (article/letter/editorial) | | Chromitites from the Vavdos ophiolite (Chalkidiki, Greece): Petrogenesis and geotectonic settings; constrains...Materials, University of Patras, 265 04 Patras, Greece Department of Applied Geological Sciences and Geophysics...minerals Platinum-group elements Ophiolite Olivine Greece Podiform chromitites of the Vavdos ophiolite are...ophiolitic chromitites. The main PGM phase is laurite that forms an extended solid solution series with...contain Ru-rich laurite and Os-Ir alloys whereas non-massive ores contain Ru-poor laurite. The PGM were |  | | Journal (article/letter/editorial) | | Paragenesis and composition of laurite from chromitites of Othrys (Greece): implications for Os-Ru fractionation...1998 / Accepted: 16 July 1998 Abstract Os-rich laurite and erlichmanite are the dominant PGM inclusions...other ophiolite complexes of the Balkan peninsula (Vourinos, Skyros Island, Rhodope) although it is distinguished...distinguished because of the Osrich composition of laurite and the presence of erlichmanite. Comparison among...indicates that the Os/Ru ratios vary consistently in laurite and bulk chromitite with respect to the chondritic |  | Grammatikopoulos, T. A., Kapsiotis, A., Tsikouras, B., Hatzipanagiotou, K., Zaccarini, F., Garuti, G. (2011) SPINEL COMPOSITION, PGE GEOCHEMISTRY AND MINERALOGY OF THE CHROMITITES FROM THE VOURINOS OPHIOLITE COMPLEX, NORTHWESTERN GREECE. The Canadian Mineralogist, 49 (6) 1571-1598 doi:10.3749/canmin.49.6.1571 | Journal (article/letter/editorial) | | OF THE CHROMITITES FROM THE VOURINOS OPHIOLITE COMPLEX, NORTHWESTERN GREECE Tassos A. GRAMMATIKOPOULOS§...of Rion, University of Patras, GRâ265 04 Patras, Greece Federica ZACCARINI and Giorgio GARUTI Department...Leoben, Austria Abstract The Vourinos ophiolite complex, in northwestern Greece, hosts abundant deposits...significantly in southern Vourinos (Cr#: 0.58â0.81), and less in northern Vourinos (Cr#: 0.75â0.83). Olivine...deposits of southern Vourinos have lower Mg# and Ni than those of northern Vourinos. The PGE contents vary |  | | Book | | and Memory of Dr. Demetrios G. Eliopoulos, IGME (Greece) Edited by Maria Economou-Eliopoulos, Federica...and Memory of Dr. Demetrios G. Eliopoulos, IGME (Greece) Special Issue Editors Maria Economou-Eliopoulos...Athens University of Leoben University of Leoben Greece Austria Austria Editorial OfïŹce MDPI St. Alban-Anlage...the Podiform Chromitite of the Othrys Ophiolite, Greece Reprinted from: Minerals 2020, 10, 245, doi:10...Phosphide from the Chromitite of the Othrys Ophiolite, Greece Reprinted from: Minerals 2020, 10, 131, doi:10 |  | | Journal (article/letter/editorial) | | of Athens, Panepistimiopolis, GR-15784 Athens, Greece; 9 2 Institute of Geology and Mineral Exploration...Sp. Loui 1, Olympic Village, GR-13677 Acharnai, Greece 10 11 12 * Correspondence: Maria Economou-Eliopoulos...chromitites 22 and porphyry-Cu deposits from Greece and everywhere (literature data) aims to define...ophiolites, porphyry-Cu, magmatic, hydrothermal, Greece 3 61 1. Introduction 62 Traditionally the...the 82 Elatsite deposit (AugĂ© et al., 2005) to Greece, up to 3 ppm measured in sulfide-concentrates (Economou- |  | | Journal (article/letter/editorial) | | Geochemical and mineralogical constraints from the Veria (Greece) podiform chromitites George Tsoupas, Maria Economou-Eliopoulos...Geochemical and mineralogical constraints from the Veria (Greece) podiform chromitites, Geoscience Frontiers, https://doi...and 2 mineralogical constraints from the Veria (Greece) podiform chromitites 3 4 5 6 7 8 9 10 George...of Athens, Panepistimiopolis, GR-15784, Athens, Greece ro of * Corresponding author email address:...from the Veria ophiolite 26 complex in Macedonia (N. Greece) may be unique among ophiolite complexes |  | Uysal, I., Sadiklar, M. B., Tarkian, M., Karsli, O., Aydin, F. (2005) Mineralogy and composition of the chromitites and their platinum-group minerals from Ortaca (Mu?la-SW Turkey): evidence for ophiolitic chromitite genesis. Mineralogy and Petrology, 83 (3) 219-242 doi:10.1007/s00710-004-0063-3 | Journal (article/letter/editorial) | | environment. Platinum-group minerals (PGM) such as laurite, erlichmanite and OsâIr alloys, silicates such...during an early stage of their crystallization. The laurite compositions show a wide range of RuâOs substitution...orogenic belt extending from the Balkans through Greece, along Southern Turkey into Iran (e.g., Engin,...generally up to 30 mm across. Ruthenium is present as laurite, and osmium is present mainly as erlichmanite and...substitutes for Ru in laurite. Iridium and rhodium occur as minor constituent of laurite and erlichmanite |  | | Journal (article/letter/editorial) | | following order of abundance: (1) sulfides [Os-rich laurite, erlichmanite and unnamed (Ir,Rh)(Ni,Cu,Fe)2S3]...common abundance of PGE sulfides, i.e., Os-rich laurite, in the Oman chromitites is ascribed to the su...fugacity was sufficiently high to produce the Os-rich laurite and, to a lesser extent, erlichmanite and Ru-poor...an early stage of serpentinization. Keywords: laurite, chromitite, ophiolite, platinum-group elements...dans un ordre selon leur abondance: (1) sulfures [laurite osmifĂšre, erlichmanite et (Ir,Rh)(Ni,Cu,Fe)2S3 |  | Kapsiotis, A., Grammatikopoulos, T. A., Tsikouras, B., Hatzipanagiotou, K., Zaccarini, F., Garuti, G. (2009) CHROMIAN SPINEL COMPOSITION AND PLATINUM-GROUP ELEMENT MINERALOGY OF CHROMITITES FROM THE MILIA AREA, PINDOS OPHIOLITE COMPLEX, GREECE. The Canadian Mineralogist, 47 (5) 1037-1056 doi:10.3749/canmin.47.5.1037 | Journal (article/letter/editorial) | | FROM THE MILIA AREA, PINDOS OPHIOLITE COMPLEX, GREECE Argyrios KAPSIOTIS, Tassos A. GRAMMATIKOPOULOS§...Panepistimiopolis of Rion, University of Patras, 265 04 Patras, Greece Federica ZACCARINI and Giorgio GARUTI Department...Milia area in the Pindos ophiolite complex, in Greece, were investigated for their platinum-group mineral...consistent with the geochemical data, is dominated by laurite and OsâIrâRu alloys that occur both as single and...composite grains, generally less than 15 mm in size. Laurite has a wide range of Os-for-Ru substitution [Ru/(Ru |  | Kapsiotis, A., Grammatikopoulos, T. A., Zaccarini, F., Tsikouras, B., Garuti, G., Hatzipanagiotou, K. (2006) Platinum-group mineral characterisation in concentrates from low-grade PGE chromitites from the Vourinos ophiolite complex, northern Greece. Applied Earth Science, 115 (2) 49-57 doi:10.1179/174327506x113055 | Journal (article/letter/editorial) | | low-grade PGE chromitites from the Vourinos ophiolite complex, northern Greece A. Kapsiotis1, T. A. Grammatikopoulos*1...K. Hatzipanagiotou1 The Vourinos ophiolite complex, located in northern Greece, hosts various chromite...on the platinum-group minerals (PGM) from the Vourinos chromitites, obtained data by in-situ investigation...to study the PGM from the concentrates in the Vourinos chromitites. More specifically, we investigated...concentrate sample contains 74 PGM that include: laurite (Ru,Os)S2; irarsite (Ir,Ru,Rh,Pt)AsS; erlichmanite |  | GonzĂĄlez-JimĂ©nez, JosĂ© MarĂa, Gervilla, Fernando, Proenza, JoaquĂn A., AugĂ©, Thierry, Kerestedjian, Thomas (2009) Distribution of platinum-group minerals in ophiolitic chromitites. Applied Earth Science, 118 (3) 101-110 doi:10.1179/174327509x12550990457924 | Journal (article/letter/editorial) | | (chromitites from Troodos, Cyprus; Ohtrys, Vourinos and Pindos, Greece; OmaÌn, Sultanate of Oman; Mugla, Turkey...Russia Australia Canada Bulgaria Cyprus Greece Greece Greece Oman Turkey Cuba Cuba Cuba Dominican Republic...2009 VOL Dobromirtsi(*) Troodos(*) Othrys(*) Vourinos(**) Pindos(**) Oman(*) 118 Mugla(**) Moa-Baracoa(*)...chromitites consists mainly of disulphides of laurite(RuS2)-erlichmanite (OsS2) solid solution series...study are listed in Table 1. (n5number of grains) laurite-erlichmanite solid solution series, irarsite and |  | | Journal (article/letter/editorial) | | various types of spinels from the Vourinos ophiolitic complex, Greece A. COCHERIE 1, T. AUGl~' 1 and G...various types of spinels from the Vourinos ophiolitic complex, Greece. Chem. Geol., 77: 27-39. Samples...spinel from three different environments in the Vourinos ophiolitic complex were analysed for the platinum-group...1985) on the chromitites from the Vourinos ophiolitic complex, Greece, and on the disseminated chromites...of the studied samples The Vourinos complex, located in northwestern Greece, exhibits an almost complete |  | Uysal, Ibrahim, Zaccarini, Federica, Sadiklar, M. Burhan, Bernhardt, Heinz-JĂŒrgen, Bigi, Simona, Garuti, Giorgio (2009) Occurrence of rare Ru-Fe-Os-Ir-oxide and associated Platinum-group minerals (PGM) in the chromitite of MuÄla ophiolite, SW-Turkey. Neues Jahrbuch fĂŒr Mineralogie - Abhandlungen, 185 (3) 323-333 doi:10.1127/0077-7757/2009/0131 | Journal (article/letter/editorial) | | terms of Ru-Os-Ir overlap the ïŹeld of coexisting laurite. This observation conïŹrms the conclusion that the...PGE compounds derived from desulfurization of laurite at low temperature, with substitution of the removed...Fe and O. In contrast with the chromitites from Vourinos where these oxides formed under weathering conditions...the MuÄla ophiolite complex, located in south-western Turkey. Its chemical composition coupled with some...Suture Zone. b SimpliïŹed geological map of south-western Turkey (after Ćenel 1997 and Alçiçek 2007). Sampling |  | | Journal (article/letter/editorial) | | chromian spinel. Stabilization of PGE alloys and laurite during the early stage of PGM crystallization in...metals led to the transformation of laurite to alloys or S-depleted laurite in some samples of chromitite....La stabilisation des alliages des EGP et de la laurite au cours des stades prĂ©coces de § E-mail address:...ont menĂ© Ă la transformation de la laurite en alliages ou en laurite dĂ©ficitaire en S dans certains Ă©chantillons...with those on chromitites from Othrys and Vourinos (Greece), Rhodope (Bulgaria), southwestern Turkey |  | | Journal (article/letter/editorial) | | 15771, Greece Department of Geology and Geoenvironment, University of Athens, Athens 15784, Greece Received...platinum-group element minerals (PGM) occur as laurite (RuS2), erlichmanite (OsS2), irarsite (IrAsS) and...SulïŹdes of the iridium group PGE (IPGE) such as laurite (RuS2), erlichmanite (OsS2) and irarsite (IrAsS)...and forms large (0.5â7 mm) irregular grains. Lauriteâerlichmanite and osmiumâiridium alloy occur both...grains and are associated with PtâFe alloys. The lauriteâerlichmanite forms pyritohedral crystals of 0.5â2 |  | | Journal (article/letter/editorial) | | comprise sulphides and alloys and are dominated by laurite (RuS2). Other sulphides are Ru-poor. Alloys includc...dominated by Ru-Os-Ir-bearing phases, particularly laurite (RuSz) and rutheniridosmine. However, some ophiolitic...inclusions of laurite and extremely rare erlichmanite (OsS2) in chromites from the Kokkinorotsos mine. The present...present study has confirmed the presence of laurite as the most abundant PGM, but has also led to the...the harzburgites. The main deposits occur in the western part of the Mt. Olympus plutonic complex which |  | Zaccarini, F., Bindi, L., Garuti, G., Proenza, J. A. (2014) RUTHENIUM AND MAGNETITE INTERGROWTHS FROM THE LOMA PEGUERA CHROMITITE, DOMINICAN REPUBLIC, AND RELEVANCE TO THE DEBATE OVER THE EXISTENCE OF PLATINUM-GROUP ELEMENT OXIDES AND HYDROXIDES. The Canadian Mineralogist, 52 (4) 617-624 doi:10.3749/canmin.1400030 | Journal (article/letter/editorial) | | believe that the investigated grains were originally laurite, ideally (Ru,Os)S2, crystallized during the magmatic...mineral lost its original S, which transformed the laurite to ruthenium. The newly formed ruthenium was probably...crystallization of magnetite. Keywords: PGE, ruthenium, laurite, magnetite, chromitite, Loma Peguera, Dominican...from podiform chromitites of the Vourinos ophiolite complex, Greece. Later, several podiform chromitites...ophiolites worldwide, namely Othrys, Pindos, and Veria (Greece), Loma Peguera (Dominican Republic), Tehuitzingo |  | | Journal (article/letter/editorial) | | Geoenvironment, University of Athens, 15784 Athens, Greece; mitsis@geol.uoa.gr Department of Geosciences and...as can be seen in our data from Mikrokleisoura (Vourinos). Keywords: chromium isotopes; chromitites; ophiolites;...contaminated water from the Evia and Assopos Basins (Greece) are compatible with global data ranges that characterize...extending from the Mirdita zone in Albania to the Vourinos, Pindos and Othrys complexes of the south zone...Analyses Polished sections from chromite deposits of Greece (Table 1) were carbon or gold coated and examined |  | Idrus, Arifudin, Septiana, Sara, Zaccarini, Federica, Garuti, Giorgio, Hasria, Hasria (2022) Mineralogical, Textural and Chemical Characteristics of Ophiolitic Chromitite and Platinum Group Minerals from Kabaena Island (Indonesia): Their Petrogenetic Nature and Geodynamic Setting. Minerals, 12 (5) 516 doi:10.3390/min12050516 | Journal (article/letter/editorial) | | occur in the chromitites. The most abundant PGM is laurite, which has been found included in fresh chromite...ferrian chromite along the cracks in the chromite. Laurite forms polygonal crystals, and it occurs as a single...forearc ophiolite. All the discovered grains of laurite are considered to be magmatic in origin, i.e.,...recognized,i.e., i.e.,laurite laurite and Os-Ir alloy. LauIn and Os-Ir alloy. Laurite rite is the most abundant...the small size of the encountered PGM, only few laurite grains have been quantitatively analyzed, and the |  | Uysal, Ibrahim, Akmaz, Recep Melih, Kapsiotis, Argyrios, Demir, Yılmaz, Saka, Samet, Avcı, Erdi, MĂŒller, Dirk (2015) Genesis and geodynamic significance of chromitites from the Orhaneli and Harmancık ophiolites (Bursa, NW Turkey) as evidenced by mineralogical and compositional data. Ore Geology Reviews, 65. 26-41 doi:10.1016/j.oregeorev.2014.08.006 | Journal (article/letter/editorial) | | inclusions in magnesiochromite grains (1â15 ÎŒm across). Laurite is dominant PGM phase, followed by erlichmanite...Economou-Eliopoulos, 2009a,b). Commonly, members of the lauriteâerlichmanite solid-solution series and OsâIr alloys...followed by ICP-MS at Genalysis Laboratory, Perth, Western Australia following the method described by Chan...2009). The Orhaneli ophiolite, situated in the western part of the IzmirâAnkaraâErzincan Suture Zone (IAESZ)...(Ahmed et al., 2012), the chromitites at the Ranomena mine, Toamasina district, Madagascar (Grieco et al., |  | | Journal (article/letter/editorial) | | Graphite-Like Carbon in Podiform Chromitites of Greece and Its Genetic Significance Maria Economou-Eliopoulos...Geoenvironment, University of Athens, Athens 15784, Greece; gtsoupas@geol.uoa.gr (G.T.); vskoun@geol.uoa.gr...the Skyros, Othrys, Pindos, and Veria ophiolites (Greece). The aim of this study was the delineation of...as oxides/hydroxides, and to lesser amounts of laurite, with pure Ru instead activating the stable CO2...ophiolite; metal alloys; super-reducing conditions; Greece 1. Introduction The origin of chromite deposits |  | | Journal (article/letter/editorial) | | grains are dominated by laurite and osmian iridium, with subordinate laurite + osmian iridium + iridian...iridian osmium and rare laurite + IrRh alloy + Rh-rich sulphide (possibly prassoite). The compositional variability...variability of associated laurite and Os-rich alloys at Editorial handling: J.G. Raith I. Y. Badanina...their genesis, with the upper thermal stability of laurite in equilibrium with Os-rich alloys estimated at...towards identifying the composition of primary laurite-alloy pairs as revealed in individual composite |  | | Journal (article/letter/editorial) | | 341-360 (2001) HIGH-TEMPERATURE STABILITY OF LAURITE AND RuâOsâIr ALLOY AND THEIR ROLE IN PGE FRACTIONATION...partitioning behavior of the platinumgroup minerals laurite (Ru,Os,Ir)S2 and RuâOsâIr alloy as functions of...Ruthenium-doped experiments yielded laurite up to ~1275 °C at log f(S2) of â2.0, with laurite replaced by Ru alloy at...that RuâOsâIr alloy coexisted with laurite at T †1265°C. Laurite and alloy from these latter experiments...grains of alloy containing more Os and Ir than laurite, and both phases becoming (Os + Ir)-rich with increasing |  | | Journal (article/letter/editorial) | | fractionation processes. Texture and composition of laurite and OsâIrâRu alloys included in chromite cores...located in the intergranular chlorite matrix (laurite, IrâRuâRh sulfarsenides and PtâPd compounds with...layered sequence is probably exposed at the south western edge of the intrusion, at the base of the Cascabulhos...correlation of major chromitite layers across four mine sections at the investigated localities (modified...With the exception of samples from the Pedrinhas mine which contain serpentine as the major interstitial |
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