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  • Processes of primary and re-equilibration mineralization ...

    Apr 01, 2018· The Vourinos ophiolite is a complete ophiolite sequence covering an area of 450 km 2, that hosts the largest chromite mining district in Europe rome ore deposits range in size from several millions of tonnes of Xerolivado-Skoumtsa mine to some thousand tonnes of the smallest exploited ores.

  • Chromites from Vourinos complex mines and their alteration

    Chromite ore deposits have been largely exploited in Greece and the presence of tens of abandoned mines witnesses the important role of the country in the chromite ...

  • Ore Geology Reviews | Vol 90, Pages 1-1118 (November 2017 ...

    Metallogeny of the Chrome Ores of the Xerolivado-Skoumtsa Mine, Vourinos Ophiolite, Greece: Implications on the genesis of IPGE-bearing high-Cr chromitites within a

  • Engineering geological evaluation of some rocks from Akure ...

    Rigopoulos I., Tsikouras B., Panagiotis Pomonis P. & Hatzi-panagiotou K., 2010. The influence of alteration on the engineering properties of dolerites: the examples from the Pindos and Vourinos ophiolites (northern Greece). International Journal of Rock Mechanics and Mining Science, 47, 6980. Siegesmund S. & Torok A., 2011. Building stones.

  • Structural Controls on the Location and Form of the ...

    This study suggests a new exploration strategy for the Vourinos complex which relies on more expansive structural models than previously applied in ophiolitic terrain. These models evaluate each phase of deformation and address its effect commencing with post-emplacement structures and working backwards to the earliest ridge tectonics.

  • Metallic Mineral Resources of Greece

    of mining and metallurgical industry in Greece presents a strong comparative advantage over other EU countries and this should benefit the national economy [13]. The projects of the mining companies in Greece vary de- ... Mt Vourinos, Mt Othrys, etc. ophiolitic complexes. The Vourinos complex constitutes a

  • Alteration of chromitites from the Voidolakkos and ...

    Aug 15, 2014· Giovanni Grieco, Micol Bussolesi, Evangelos Tzamos, Annie Ewing Rassios, Argyrios Kapsiotis, Processes of primary and re-equilibration mineralization affecting chromitite ore geochemistry within the Vourinos ultramafic sequence, Vourinos ophiolite (West Macedonia, Greece), Ore Geology Reviews, 10.1016/j.oregeorev.2018.03.009, 95, (537-551), (2018).

  • A structural approach to the genesis of chrome ores within ...

    A structural approach to the genesis of chrome ores within the Vourinos ophiolite (Greece): Significance of ductile and brittle deformation processes in the formation of economic ore bodies in oceanic upper mantle peridotites / A. Rassios, E. Tzamos, Y. Dilek, M. Bussolesi, G. Grieco, A. Batsi, P.N. Gamaletsos.

  • Kozani - Wikipedia

    Kozani (Greek: Κοζάνη, pronounced ; Aromanian: Cojani) is a city in northern Greece, capital of Kozani regional unit and of West Macedonia region is located in the western part of Macedonia, in the northern part of the Aliakmonas river valley. The city lies 710 metres (2,329 feet) above sea level, 15 kilometres (9 miles) northwest of the artificial lake Polyfytos, 120 km (75 miles ...

  • Platinum-group minerals from the Troodos ophiolite, Cyprus ...

    Platinum-group minerals have been identified in chromitites from the Troodos ophiolitic complex of Cyprus. The host chromitites occur as podiform bodies within the basal harzburgite of the ophiolite, as occasional discontinuous layers in the dunites at the base of the overlying cumulate sequence and rarely as minor schlieren in clinopyroxene dunites at higher levels.

  • A High-Resolution Ground Magnetic Survey at Rizos ...

    Summary The exploitation of chromite ore deposits in Greece is evident by the presence of many abandoned mines. The fresh interest by AKTOR S.A. in chromite ore deposits in Mt. Vourinos, N.Greece, is directly related to the boost in Cr prices controlled by international market trends.

  • Home | Avino Silver & Gold Mines Ltd.

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  • ORE DEPOSITS OF NORTH-EASTERN GREECE AND SOUTH

    Mining Investment Co. . The chrome ore bodies of Skoumtsa mine are located within the zone that hosts all economic concentrations of chrome ore and appears to comprise an incipient ductile thrust within the uppermantle section. Skoumtsa mine is one of the worlds largest ophiolite-hosted chrome deposits. Vourinos Ophiolite Complex

  • Large skeletal chromites in the Vourinos ophiolite. Greece

    Large skeletal chromites in the Vourinos ophiolite, Greece. Bull, geol. Soc. Denmark, Vol. 38, pp. 33-42, Copenhagen, April 25th, 1990. Exceptionally large skeletal chromites, up to several cm across, from harzburgite veins in the Vourinos ophiolite, Greece have been described in detail using microstructural and fabric methods of silicate

  • Major and minor element geochemistry of chromite from the ...

    Jun 01, 2016· The Vourinos Complex in northern Greece is a mid-Jurassic ophiolitic slab emplaced onto the Pelagonian continental margin during the upper Jurassic: its emplacement, long considered a type obduction process (Zimmerman, 1968, Zimmerman, 1969), was toward the east (Smith and Rassios, 2003), over the Pelagonian Margin, creating a sedimentary ...

  • Dr. George Bourmas - Dr. UG Mining Engineer - GRECIAN ...

    Skoumtsa Complex, Mt. Vourinos, NW Greece (Podiform chromite orebodies - metallurgical type) Evaluation of borehole data, pertaining to the SW area of the Complex. Development of block model (Surpac platform - Kriging). Preliminary design of main underground works. Feasibility study preparation. Sappes Gold Project, NE ...

  • Minerals | Free Full-Text | Factors Controlling the ...

    Multi-Tool (LA-ICPMS, EMPA and XRD) Investigation on Heavy Minerals from Selected Holocene Peat-Bog Deposits from the Upper Vistula River Valley, Poland

  • Platinum-group-mineral inclusions in chromitites from the ...

    Résumé (eng) Platinum-group-mineral (PGM) inclusions have been found in Al-rich chromitites from the southern part of the Oman ophiolite. Contrary to other ophiolitic complexes, laurites (RuS 2) are the only PGM found.All of them are primary and are commonly associated with or included in a small silicate crystal, which seems to be a characteristic of the PGM from Oman.

  • PROCESS MINERALOGY FOR EVALUATING MINERALOGY, PHYSICAL

    Wan, Rong-Yu, 2001. Importance of metallurgical re- search on refractory gold ore processing. Mining Engineering: November v. 53, n. 11, pp. 41-46. Wang, K. 1994. Study on the gold occurrence from several typical carlin-type gold deposits in China. Hefei, Japan: Publishing house of University of Science & Technology of China.

  • Comparative Study of Chromite Deposits from Troodos ...

    Abstract. The comparative study of chromitites from Vourinos (Greece), Troodos (Cyprus), Semail (Oman), Tiébaghi and Massif du Sud (New Caledonia) ophiolitic complexes reveals that all studied chromite deposits are surrounded by dunite whose extent bears no

  • (PDF) The influence of alteration on the engineering ...

    The Vourinos samples have slightly lower resistance to abrasion compared to those of Pindos.The aggregate skid resistance was assessed in the laboratory by the polished stone value (PSV) test, which was performed according to EN [29]. ... 0.87 0.59 0.81 0.69 À0.98 À0.97 0.95 0.83 0.99 1.00 I. Rigopoulos et al. / International Journal of Rock ...

  • Minerals | Special Issue : Mesohellenic Ophiolites and ...

    Minerals, an international, peer-reviewed Open Access journal. Dear Colleagues, The Mesohellenic Ophiolites include the Vourinos Complex, one of the founding localities of plate tectonic theory, as well as the Pindos, Othris, and Koziakas ophiolites.

  • The influence of alteration on the engineering properties ...

    Jan 01, 2010· The Vourinos samples display lower SE values than those of Pindos, suggesting that a higher degree of alteration leads to a higher percentage of fine material. Regression analysis established that among the secondary mineral phases, only chlorite shows strong positive relationships with the water absorption and total porosity values.

  • Chromite Grain Diameter (CGD) from the ore-hosting dunite ...

    The largest chrome-ore bearing dunite of the Vourinos Complex occurs within the Xerolivado-Skoumtsa Mine District. The host dunite body has a surface exposure of 3 km2 and extends at least 400m into the subsurface. The dunite body is hosted by harzburgite tectonite interfolded with the dunite body during ductile phases of deformation. The Xerolivado-Skoumtsa mine is one of

  • Platinum Group of Metals (PGM) Occurrence and Future ...

    The major world Platinum Group of Metals (PGM) deposits are generally occurred in association with ultramafic/mafic complexes. Likewise, the serpentinizedperidotite and talc actinolite schist from Madaura-Ikauna-Pindar tract, in Lalitpur district of Bundelkhand craton have been found enriched with PGM, Au and Ag. Ultramafic rocks comprising dunite, peridotites occur as

  • A structural approach to the genesis of chrome ores within ...

    Oct 01, 2020· The ultramafic lithologies within the Vourinos ophiolite cover an area of ~ 400 km 2 and contain more than 450 separate chromitite-bearing outcrops (Vrahatis and Grivas, 1980); eight economic- or potentially economic-scale ore districts have been distinguished (Rassios, 2014).The economic scale of targeted ore bodies depends on the methods and costs of exploitation (open pit mining

  • (PDF) The geometry of structures forming around the ...

    At Vourinos, the high temperature (1200ºC) fabrics of Ross and others (1980) parallel those of mylonitic and brittle fabrics for all detailed study districts (figure 5). A similar correspondence has been shown in form line maps of hightemperature mylonitic , and brittle shear fabrics in the Mega Isoma massif of Othris (see Rassios and ...

  • Geology of North Macedonia - Wikipedia

    The Olonos-Pindus Zone extends from Montenegro to Rhodes and is a deep allochthon trough, with clastic Triassic sandstone and the Drymos Limestone.The mineral asbestos occurs in joints in Western Macedonia and in the serpentinized edge of the Vourinos Massif. Stibnite is found here. Disseminated copper sulfides are common in veins in Western Macedonia. Alpine cycle

  • Microcracks in ultrabasic rocks under uniaxial compressive ...

    Jan 10, 2011· The dunite, collected from Vourinos, is moderately to highly serpentinized. It displays a mesh texture (Figure 2d), with rare relics of primary granular texture (Figure 2e).The mineralogical composition of this rock-type comprises relict olivine and Cr-spinel ().Serpentine is the dominant (secondary) mineral phase; other ocean-floor metamorphic products are chlorite

  • Aetoraches Mine, Vourinos Ophiolite complex, Kozani and ...

    Aetoraches Mine, Vourinos Ophiolite complex, Kozani and Grevena border area, West Macedonia, Greece : A chromium mine owned by Hellenic Ferroalloys (Hellenic Industrial and Mining Investment Co. Group). Located between Kozáni and Grevena.

  • Geology of North Macedonia - Wikipedia

    The Olonos-Pindus Zone extends from Montenegro to Rhodes and is a deep allochthon trough, with clastic Triassic sandstone and the Drymos Limestone.The mineral asbestos occurs in joints in Western Macedonia and in the serpentinized edge of the Vourinos Massif. Stibnite is found here. Disseminated copper sulfides are common in veins in Western Macedonia. Alpine cycle sedimentary rocks are ...

  • Xerolivado Mine, Pontini and Chromion area, Vourinos ...

    Xerolivado Mine, Pontini and Chromion area, Vourinos Ophiolite complex, Kozani and Grevena border area, West Macedonia, Greece : A chromium mine in chromite ore located near Pontini and Chromion. Produced 150,000 tons of ore (1984). Owned by Hellenic Ferroalloys (Hellenic Industrial and Mining Investment Co. group). Located ...

  • Metallic mineral resources of Greece | SpringerLink

    Dec 08, 2012· Today Greece produces and exports raw bauxite and alumina, concentrates of galena and sphalerite and ferronickel. The indicated reserves of bauxite, located in the Mt Helikon-Mt Parnassus-Mt Giona-Mt Iti zone, are estimated at approximately 100 mt and those of aluminum 2.5 mt. The probable and indicated reserves of lead and zinc from Chalkidiki are approximately 3.125 mt.

  • Annie RASSIOS | Researcher | Phd

    The Vourinos ophiolite is a complete ophiolite sequence covering an area of 450 km2, that hosts the largest chromite mining district in Europe.

  • (PDF) ORYKTOLOGIKA NEA-NEWS ON MINERALS ,May-June 2007 ...

    -) Green , white transparent , pink) Tourmaline (From the collection of Petros Solomonidis , Piraeus , Hellas ) An interesting area for mineralogical safari in the Hellenic mainland : Vourinos Ophiolite complex , Kozani , Western Macedonia , Hellas Aetoraches Mine, Vourinos Mt ophiolite complex, Kozáni and Grevena prefectures border area ...

  • 10 Biggest Mining Companies - Investopedia

    Sep 14, 2020· Vale is a Brazil-based multinational mining company. It produces iron ore, pellets, manganese, iron alloys, gold, nickel, copper, bauxite, alumina, aluminum, potash, and coal. The company also owns...

  • Geology of Greece - Wikipedia

    Near Vourinos is a deposit with 1.5 million tons of ore and an ancient mine in Thessalia extracted 500,000 tons by the 1990s. Copper: The Chalkidiki Peninsula has 15 million tons of copper. Pyrite is common near East Peloponesus and disseminated copper sulfides are common in veins in Western Macedonia.

  • OPEN ACCESS minerals

    Mining has been part of the Greek civilization since prehistoric times, when Greeks began extracting non-metallic minerals and metals for use. ... Vourinos Cr PGE Xerolivado Cr PGE Milia Cr PGE (Os, Ir, Ru) Korydallos Cr PGE (Pt, Pd,

  • Metallic mineral resources of Greece | SpringerLink

    Dec 08, 2012· Today Greece produces and exports raw bauxite and alumina, concentrates of galena and sphalerite and ferronickel. The indicated reserves of bauxite, located in the Mt Helikon-Mt Parnassus-Mt Giona-Mt Iti zone, are estimated at approximately 100 mt and those of aluminum 2.5 mt. The probable and indicated reserves of lead and zinc from Chalkidiki are

  • Minerals | Free Full-Text | Geological, Mineralogical and ...

    Mining has been part of the Greek civilization since prehistoric times, when Greeks began extracting non-metallic minerals and metals for use. Ancient underground mines and ruins of metallurgical furnaces throughout Greece are witnesses of the intense exploitation of the metallic mineral resources, mainly gold, silver, copper, lead and iron.

  • A structural approach to the genesis of chrome ores within ...

    Oct 01, 2020· The richest ore bodies in Vourinos are represented by the schlieren ores of the Xerolivado Mine, and occur as extensive lenses of mylonitic chromitite, marking the highest degree of deformation within the complex. These textures display patterns of re-equilibration geochemical halos and transition from ductile into brittle deformation conditions.

  • Effects of serpentinization degree on the geotechnical ...

    International Journal of Rock Mechanics and Mining Sciences, Geomechanics abstract, Pergamon Press, 227(1-4): 193203.## Rigopoulos, I., 2009. Correlation between petrographic and physico-mechanical properties of the Pindos and Vourinos ophiolitic rocks and assessment of their suitability as aggregates in construction-industrial uses.

  • Iridium: Mineral information, data and localities.

    Platinum-group mineral characterisation in concentrates from low-grade PGE chromitites from the Vourinos ophiolite complex, northern Greece. Applied Earth Science: Transactions of the Institutions of Mining and Metallurgy: Section B, 115(2), 49-57. Voidolakkos

  • Skoumtsa Mine, Vourinos Ophiolite complex, Kozani and ...

    Skoumtsa Mine, Vourinos Ophiolite complex, Kozani and Grevena border area, West Macedonia, Greece : A chromium mine owned by the Hellenic Industrial & Mining Investment Co. (HIMIC). 250,000 tons/year beneficiation plant capacity.

  • Land Reclamation and Ecological Restoration in a Marine Area

    The asbestos mining area (M.A.B.E.) (in SW part of Kozani Prefecture, northern Greece) is situated eastern of mountain Vourinos and north-western of mountain Kambounia. It covers 414 ha and it is located 1 km southern of the longest Greek river Aliakmon. Geo-morphologically the wider area is characterized mountainous with a dense network of