| | Journal (article/letter/editorial) | Lattanzi Epithermal precious metal deposits of Italy±an overview Received: 13 October 1998 / Accepted:...view of Italy. It was only in the late 1980s that two districts were recognized, in Sardinia and southern...The most relevant areas include the Au deposit at Furtei, already in production, and the Osilo prospect...extensive exploration is under way. The deposit at Furtei contains at least six tonnes of gold metal. The...similar to porphyrystyle systems also circulated at Furtei. At Osilo, a number of quartz veins containing | | Ruggieri, Giovanni, Lattanzi, Pierfranco, Luxoro, Silvana S., Dessi, Roberto, Benvenuti, Marco, Tanelli, Giuseppe (1997) Geology, mineralogy, and fluid inclusion data of the Furtei high-sulfidation gold deposit, Sardinia, Italy. Economic Geology, 92 (1) 1-19 doi:10.2113/gsecongeo.92.1.1 | Journal (article/letter/editorial) | Dataof the FurteiHigh-Sulfidation GoldDeposit,Sardinia, Italy GIOVANNI lqUGGIERI, InstitutoInternazionale...Ricerche Geotermiche, CNR,PiazzaSolferino 2, 56100Pisa,Italy PIERFRANCO LATTANZI, Dipartimento di Scienze dellaTerra...09127Caglian', Italy SILVANA S. LUXORO, ROBERTODESSi, Progemisa, Via Contivecchi 7, 09122Cagliari,Italy MARCO...50121Firenze,Italy Abstract Theepithermal high-sulfidation golddeposit at Furtei(Sardinia, Italy)contains...tionoccurs (Tanelliet al.,1991);in Sardinia, epithermal gold The Corsica-Sardinia microplateis a formersegmentof | | | Journal (article/letter/editorial) | associated with Cenozoic volcanic rocks of Sardinia (Italy): Geological, mineralogical, geochemical features...of Cagliari, Piazza dâArmi 19, 09123 Cagliari, Italy b Dipartimento di Geoingegneria e Tecnologie Ambientali...of Cagliari, Piazza dâArmi 19, 09123 Cagliari, Italy c Dipartimento di Scienze della Terra, University...University of Cagliari, Via Trentino, 09123 Cagliari, Italy Received 28 February 2004; accepted 5 November 2005...deposits associated with the Cenozoic volcanics of Sardinia include kaolin, bentonite, and zeolites. Though | | | Journal (article/letter/editorial) | Systems of Western Sardinia, Italy R. SIMEONE,â Via Corvetto 33, 09014 Carloforte, Italy J. H. DILLES, Department...Tecnologie Ambientali, UniversitĂ di Cagliari, Italy AND M. PALOMBA Istituto di Geologia Ambientale...N.R., Sez. di Cagliari, UniversitĂ di Cagliari, Italy Abstract Large kaolin deposits hosted by Miocene...Miocene silicic pyroclastic rocks in northwestern Sardinia represent hydrothermal alteration formed within...alunite. The laterally extensive kaolin deposits in Sardinia, and possibly similar deposits elsewhere in the | | Orgeval, J. J., Caron, C., Lancelot, J., Omenetto, P., Gandin, A., LibertĂ , A., Courjault RadĂ©, P., Tollon, F., Laurent, Ph., Maluski, H., BĂ©ziat, P., Salpeteur, Y., Sini, G., Elter, F.M., Baratto, M. (2000) Genesis of polymetallic and precious-metal ores in the Western Mediterranean province (CĂ©vennes, FranceâSardinia, Italy) Applied Earth Science, 109 (2) 77-94 doi:10.1179/aes.2000.109.2.77 | Journal (article/letter/editorial) | in the Western Mediterranean province (CĂ©vennes, Franceâ Sardinia, Italy) Downloaded by [Laurentian University]...Lower Palaeozoic Iglesiente domain of southwest Sardinia and the southern CĂ©vennesâMontagne Noire Variscan...gold province of Sardinia is genetically quite distinct from the Palaeozoic leadâzinc province of Iglesiente...(southern CĂ©vennes, Montagne Noire) and southwestern Sardinia (IglesienteâSulcis). Essentially Cambro-Ordovician...attractive example54 and the Tertiary gold of western Sardinia is a new, economically interesting discovery.77a | | Voudouris, Panagiotis Christos, Melfos, Vasilios, Spry, Paul G., Moritz, Robert, Papavassiliou, Constantinos, Falalakis, George (2011) Mineralogy and geochemical environment of formation of the Perama Hill high-sulfidation epithermal Au-Ag-Te-Se deposit, Petrota Graben, NE Greece. Mineralogy and Petrology, 103 (1) 79-100 doi:10.1007/s00710-011-0160-z | Journal (article/letter/editorial) | altaite and electrum. Quartz, barite, kaolinite, sericite and minor aluminum-phosphate-sulfate minerals...gold assemblage associated with quartz-barite-sericite±alunite veins (St Demetrios-Viper/Sapes, Pefka...and belongs to the Tertiary Rhodope metallogenic province (Fig. 1a). The Perama Hill deposit was found by...Simplified geological map of the Rhodope metallogenic province in Greece showing Tertiary porphyry Cu-(±Mo) and...Oligocene in northeastern Greece to the present in the South Aegean volcanic arc (Jolivet and Brun 2010). The | | | Journal (article/letter/editorial) | Al-phosphate, sulfate, pyrophyllite Massive-vuggy silica Sericite, adularia uncommon Illite=smectiteadularia ...El Indio, Chile (Jannas et al., 1990) and Furtei, Sardinia (Fiori and Grillo, 2001; Fadda et al., 2005)... rocks of the Oligocene-Miocene Greek Rhodope province (Fig. 1) (Dimou et al., 1994; Voudouris and Arikas...porphyry-epithermal mineralization also occurs further to the south on Limnos Island (northeastern Aegean Sea) (Fig...deposits Ore deposits in northeastern Greece (Rhodope province and Limnos Island) were formed during the final | | | Journal (article/letter/editorial) | (hereafter shortened to Bellerophon), about 60 km south-southeast of Kalgoorlie, is of particular interest...into six terranes (Cassidy et al. 2006): Narryer, South West, central Youanmi, Kalgoorlie, Kurnalpi, and...include quartz, carbonate, biotite, chlorite, sericite, and epidote. The metamorphic mineral assemblage...of biotite, and plagioclase has been altered to sericite and calcite. Metamorphic rocks close to mineralization...show foliation defined by chlorite, biotite, and sericite. Small veinlets occur parallel to the foliation | | Liu, Jia-Jun, Yang, Long-Bo, Dai, Hong-Zhang, Yuan, Feng, Zhu, Bing-Yu (2014) Discovery and significance of Cu-Zn intermetallic compounds in the Jingxi gold deposit, western Tianshan Mountains, NW China. Geological Journal, 49 (6) 584-598 doi:10.1002/gj.2583 | Journal (article/letter/editorial) | al., 2002). At the Zhaishang Au deposit (Gansu Province, PRC), a large number of other CuâZn intermetallics...2012). NCTSâ Northern Central Tianshan Suture; SCTSâSouth Central Tianshan Suture. NTIAâNorth Tianshan Island...Tianshan Plate. AMSYâactive continental margin on the south side of the Yili-Central Tianshan Plate. PMâPalaeozoic...deposits can be found in the Tulasu Basin, with the Axi mine being the largest (Fig. 2). Similar but larger and...GEOLOGICAL CHARACTERISTICS OF JINGXI GOLD DEPOSIT 3.1. Mine geology The Jingxi gold deposit is the largest gold | | | Journal (article/letter/editorial) | pyroclastics Acidic tuffs ä ä ä ä ä ä ä Kaolinite Sericite Vein Breccia pipe Breccia pipe Vein Network...extensively found in the host rocks. The K-Ar ages for sericite in veins are in the range of 4.0 and 5.0 Ma (MMAJ...veinlets are composed mainly of ïŹne quartz, calcite, sericite and clays with minor amounts of pyrite, sphalerite...into the high sulïŹdation type. The K-Ar ages for sericite in veinlets are 3.6 Ma (MMAJ, 1996; Sawai & Itaya...extensive in the host rocks. The K-Ar ages for sericite in veins are 1.4â1.5 â«Ÿ 0.3 Ma (MMAJ, 1987). The | | | Journal (article/letter/editorial) | âlow-sulfidationâ ĆœHedenquist, 1987. or âadulariaâ sericiteâ ĆœHeald et al., 1987. types. PlioceneâQuaternary...the Penshan group is mineralized along the northâsouth normal faults. In this paper, fluid inclusion microthermometric...Rodalquilar, Spain ĆœArribas et al., 1995. and Furtei, Italy ĆœRuggieri et al., 1997.. These inclusions in...epithermal deposits: acidâsulfate and adulariaâsericite types. Econ. Geol. 82, 1â26. 167 Hedenquist..., 1955. Goldâcopper deposits of the Chinkuashih mine, Taiwan, with special reference to the mineralogy | | Dini, Andrea, Vincenzo, Gianfranco Di, Ruggieri, Giovanni, Rayner, Jeffrey, Lattanzi, Pierfranco (2005) Monte Ollasteddu, a new gold discovery in the Variscan basement of Sardinia (Italy): first isotopic (40Arâ39Ar, Pb) and fluid inclusion data. Mineralium Deposita, 40 (3) 337-346 doi:10.1007/s00126-005-0021-y | Journal (article/letter/editorial) | gold discovery in the Variscan basement of Sardinia (Italy): first isotopic (40Ar 39Ar, Pb) and fluid...discovery in the Variscan basement of southeastern Sardinia. Gold occurs in late-Variscan extensional brittle...with literature data for Variscan deposits of Sardinia, and for European Variscan gold deposits. Fluid...Pisa, Italy E-mail: a.dini@igg.cnr.it J. Rayner Medoro Resources Ltd., Furtei, 09040 Cagliari, Italy P....UniversitaÌ di Cagliari, Via Trentino 51, 09127 Cagliari, Italy transition to a post-orogenic, pre-Tethyan geodynamic | | | Journal (article/letter/editorial) | Precambrian age. These metasediments consist of quartzâ sericite schists and chloritic schists with calc-silicate...of the flat-topped hills in the vicinity of the mine are believed to be remnants of sheets of travertine...in a mobile belt; no known primary source 8. New South Wales: in Phanerozoic conglomerates in a mobile...underlain both by Archaean crust of the Superior Province, locally with its Huronian sedimentary cover:...sufficiently frequent that efforts were made to mine them in their own right. (Remember that much of | | Zwahlen, C., Cioldi, S., Wagner, T., Rey, R., Heinrich, C. (2014) The Porphyry Cu-(Mo-Au) Deposit at Altar (Argentina): Tracing Gold Distribution by Vein Mapping and LA-ICP-MS Mineral Analysis. Economic Geology, 109 (5) 1341-1358 doi:10.2113/econgeo.109.5.1341 | Journal (article/letter/editorial) | particularly important for the development of a future mine. This paper describes the main vein types in geologic...extension (Ramos, 1988; Fig. 1). When spreading of the South Atlantic Ocean was initiated in the Late Cretaceous...occurs in several orogen-parallel belts in the South American Andes. These metallogenic belts formed...silicic halo 2B Quartz - pyrite (chalcopyrite) with sericite - tourmaline halo Stage 2 Quartz-pyrite veins...vein with sericite halo (drill core ALD-49, 426 m). (H) Stage 2B quartz-pyrite veins with sericite-tourmaline | | | Journal (article/letter/editorial) | Red Mountain, CO6, Underground sample, Longfellow Mine, Red Mountain, Silverton, Colorado). Images: a)...magmatic ïŹuid and groundwater in high-level adulariaâsericite (so-called âlow sulïŹdationâ goldâsilver) and analogous...inclusions in Sulfate Stage quartz samples. At Furtei, Sardinia, Ruggieri et al. (1997) also comment on the...isolated replacement of early alunite by illiteâsericite at El Indio (Jannas, 1995). In most deposits,...assemblages encountered in epithermal adulariaâsericite type deposits. SulïŹde stage mineral assemblages | | | Journal (article/letter/editorial) | stockworks, disseminated bodies Silicification, quartz-sericite/illite Main gangue minerals Steep and shallowly...present surface) alongside the Furtei HS gold deposit, Sardinia, Italy. Note the formerly exploited kaolinite...formerly exploited alongside the Furtei HS gold deposit in Sardinia, Italy (Fig. 4d). At Mt. Muro in Central...most of the known orebodies, as observed near the Furtei HS gold deposit (Fig. 4d), in the La Coipa HS-IS...mercury are weakly anomalous in such material at Furtei (Fig. 4d). Sub-lacustrine hydrothermal chert is | | | Journal (article/letter/editorial) | from the Coranda-Hondol ore deposit, Certej area, South Apuseni Mountains, Romania. The Coranda-Hondol deposit...structural units: North Apuseni Mountains (NAM) and the South Apuseni Mountains (SAM). Together with the Baia...deposit type and mining history. For this proliïŹc province (GQ), remarkably few studies (Cook et al., 2009a;...(2016) 857â873 859 Fig. 1. Geological map of the South Apuseni Mountains and the location of the major...wall-rock alteration assemblages consist of quartz, sericite, K feldspar, calcite and pyrite (Alderton and | | | Journal (article/letter/editorial) | extensive in the host rocks. The KâAr ages for sericite in veins are 1.4 to 1.5 0.3 Ma (MMAJ, 1987)...siliciïŹed, sericitized and kaolinitized. KâAr ages on sericite in veins range from 4.0 to 5.0 Ma (MMAJ, 1996;...(1990) Telluride mineralization at Ashanti gold mine, Ghana. Mineral. Mag., 54, 617â627. Brodtkorb, M...mineralization in the Tissa-Sarkhoi goldbearing province (East Sayan). Russ. Geol. Geophys., 48, 643â655...tellurides and sulfosalts from the Furtei epithermal Au deposit, Sardinia, Italy: paragenesis and genetic signiïŹcance | | | Journal (article/letter/editorial) | radiogenic age dating (e.g. <0.3 Ma age diïŹerence at Far South EastâLepanto: Arribas et al. 1995b; La Famatina:...Hedenquist et al. 1998; Kouzmanov et al. 2003). Quartzâsericiteâpyrite±chalcopyrite±anhydrite veins cutting through...characterised and contrasted with the adularia-sericite or low-sulphidation type by Heald et al. (1987)...Colorado; see StoïŹregen 1987). c Feldspar-destructive (sericiteâ quartzâpyrite) alteration along two vertical...see Redmond et al. 2004). Similar quartzâpyriteâsericite veins variably contribute to Cu±Au ore grade in | | Li, Jian-Wei, Zhou, Mei-Fu, Li, Xian-Fu, Li, Zi-Jin, Fu, Zhao-Ren (2002) Origin of a large breccia-vein system in the Sanerlin uranium deposit, southern China: a reinterpretation. Mineralium Deposita, 37 (2) 213-225 doi:10.1007/s00126-001-0221-z | Journal (article/letter/editorial) | basins, respectively. NCB North China block, SCB South China block, CYF ChalingâYongxing fault, CLF ChenxianâLinwu...The Sanerlin uranium deposit is located in the South China block (or Yangtze craton), an important part... Much of the Mesozoicâ Cenozoic geology of the South China block can be related to the oblique subduction...(Fig. 3). Granitic intrusions crop out 20â30 km south, as well as north, of the Sanerlin deposit (Fig...rocks of the Dangchong Formation were altered to sericite that is intergrown with quartz and disseminated | | | Book (volume) | Spain by F. Vazquez Guzman Portugal by D. Thadeu Italy by P. Zuffardi European part of the U.S.S.R. by...Southwest Europe embraces France, Spain, Portugal and Italy. Each volume has an introductory chapter of the...Cordillera Pyreneo-Proven!yal chain Corsica and Sardinia . Mineralization in relation to tectonic evolution...Elisa and Dorinda Barruecopardo Golpejas or Bellita mine Morille-Martinamor El Cubito El Trasqui16n. Santa...Baixo Tejo and Sado Basins Silica sand deposits Italy by P. Zuffardi Introduction Geological setting Stratigraphy | | | Journal (article/letter/editorial) | North Carolina, and the Kings Mountain Belt of South Carolina and North Carolina (Fig. 3; Hatcher, 2010)...planar or en-echellon patterns and typically show sericite-sulfide alteration envelopes. They are confined...within the quartz-sericite-biotite schists, sericitepyrite-quartzites, and quartz-sericite-phyllites of the...felsites (Pavlides et al., 1982), and in quartz-sericite schists (Mangan et al., 1984). Quartz-Au vein-type...overlap with age data for the emplacement of the South Mountain Batholith, which is the major plutonic | | Prokofâev, V. Yu., Zorina, L. D., Kovalenker, V. A., Akinfiev, N. N., Baksheev, I. A., Krasnov, A. N., Yurgenson, G. A., Trubkin, N. V. (2007) Composition, formation conditions, and genesis of the Talatui gold deposit, the Eastern Transbaikal Region, Russia. Geology of Ore Deposits, 49 (1) 31-68 doi:10.1134/s1075701507010023 | Journal (article/letter/editorial) | of the Olekma Complex in the northeast. In the south, they contact with Middle Paleozoic diorite and...quartz; and (3) adularia, chlorite, muscovite (sericite), quartz, and calcite. The zones of hydrothermal...(9) sulfide; (10) crush zones; (11) faults; (12) mine and open pit contours. analytical lines: PbMα,...composition and Au grade. Ore zone 2 was studied at the mine level of 660 m asl (140 m from the surface, drift...mouth) and in open pit 1 (trenches 8 and 9). At the mine level, the ore zone is 15 m thick, including a 10-m | | | Book | Perth, Australia Jim Graham 4th 1991 Pretoria, South Africa Sybrand de Waal 3rd 1989 MontrĂ©al, Canada...Angeles, USA Donald Hausen 1st 1981 Johannesburg, South Africa S.A. Hiemstra INTERNATIONAL COUNCIL FOR...years since the inaugural meeting in Johannesburg, South Africa in 1981 and this decenary event perhaps heralds...Prof.Dr. Juraj Majzlan Germany Dr. Mario Berra Italy Prof.Dr. Terje Malvik Norway Dr. Arjan Ciftja...aggregates in mortars: examples from Lombardy (Northern Italy) Bugini, R, and Folli, L 85 13 Assessment of | | | Book | OF T HE 1 0 GEOLOGICAL SURVEY· OF SCOTLAND. âą MINE 0 1 1 0 of. GEMS Press _ _ _ _ _ _ Shelf_ _...1906) SOURCES OF TEMPORARY WATEB SUPPLY in the SOUTH 01' ENGLAND and NEIGHBOUJlING PARTS OF THE CONTINENT...Germany, Austria, Sweden, Denmark, Spain, Portugal, Italy, Russia, China, Japan, India, Federated Malay States...At1stralasia, Canada, The United States of America, South .America, Africa ... 41 CHAPrl'ER III.-DIS1'RIBtrrrroN... . . .. ,, 33. Map of Kaolin district, Scania, South Sweden . ... . .. . ... ,, 34. Section in a Kaolin |
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