 | | Journal (article/letter/editorial) | | Implication for the Absence of Porphyry Cu Deposits in Japan Yasushi WATANABE, Ryuya SATO* and Adi SULAKSONO...Sciences, Mining Museum of Akita University, Akita, Japan Abstract The role of potassic alteration and associated...the potential of porphyry Cu mineralization in Japan. The reactions between the aqueous magmaticâhydrothermal...precipitation during the potassic or subsequent chloriteâsericite alteration in the temperature range of 600â400...CretaceousâPaleogene Southwestern Japan arc and late Miocene Northeast Japan arc, potassic alteration represented |  | | Journal (article/letter/editorial) | | Sulfur Isotope Study on Hg and Sb Deposits in Japan Akira IMAI, Naotatsu SHIKAZONO1, Masaaki SHIMIZU*...Hakozaki, Higashi-ku, Fukuoka 812-8581, Fukuoka, Japan [e-mail: imai@mine.kyushu-u.ac.jp] * University...University, Gofuku 3190, Toyama 9308555, Toyama, Japan 1 Present address: Department of Applied Chemistry... Kanagawa, Japan 2 Present address: Tokiwadaira-Nishikubo, Matsudo 270-2266, Chiba, Japan Received on...jamesonite and berthierite from Sb deposits in Japan are examined in order to understand metallogeneses |  | | Report (issue) | | mineral col lector, was born in Kanazawa, Ishikawa Prefecture, on August 30, 1874. Soon after his graduation...at the Arakawa Mine, Akita Prefecture. In 1909, he was promoted to Director of the Mine and held. the...then that of the Director of the Yoshioka Mine, Okayama Prefecture, for about seven years altogether. He...technology in the first half of this century in Japan. He retired from the Advisory Board of the Mitsu...such volumes as " BeitrĂ€ge zur Mineralogie von. Japan ", Neue Folge I and II (T. Ito, 1937), " Japanese |  | | Journal (article/letter/editorial) | | epithermal gold metallogenic provinces in Kyushu, Japan Received: 1 November 2004 / Accepted: 15 August...Abstract Kyushu Island, Japan, is located at the junction of the Southwest Japan arc and the Ryukyu arc...the Philippine Sea plate beneath the Southwest Japan arc caused development of the Hohi graben and arc-related...surrounding the Hohi graben, as is represented by the Bajo and Taio deposits. The subduction of the relatively...orthogonal convergence rate between the Southwest Japan arc and the Philippine Sea plate, resulting in a |  | Kojima, Shoji, San MartĂn, MarĂa Constanza, Nagase, Toshiro, Nakashima, Daisuke, Bisso, Claudio, Menzies, Andrew (2021) Distribution of gold and silver and its relation with hypogene ore minerals in the Esperanza porphyry deposit, Antofagasta Region, Chile. Resource Geology, 71 (1). 80-90 doi:10.1111/rge.12250 | Journal (article/letter/editorial) | | Museum, Sendai, Japan 3 Department of Earth Science, Tohoku University, Sendai, Japan 4 Minera Los...Email: skojima@ucn.cl Funding information Esperanza mine geologists Abstract Modes of occurrence of Au-...Los Pelambres (PerellĂł et al., 2012; Roman, 2013), Bajo de la Alumbrera (Sillitoe, 1979; Ulrich et al.,...transitional chlorite-sericite zone, which is composed of chlorite, smectite, sericite, illite, and quartz...quartz. Later quartz-sericite zone occurs locally as an alteration halo overprinting the previously described |  | | Journal (article/letter/editorial) | | Alteration Geochemistry of the Porphyry Cu-Au Deposit at Bajo de la Alumbrera, Argentina THOMAS ULRICH,â ,* ETH...geochemistry, as well as the ore mineralization history of Bajo de la Alumbrera, a world-class porphyry copper-gold...the andesites. Feldspar-destructive alteration (sericite + pyrite ± clay minerals ± gypsum) overprints...and have a closely overlapping distribution on the mine scale. A well-developed ore shell coincides with...1970). Because of its regular alteration zonation, Bajo de la Alumbrera in northwestern Argentina has been |  | | Journal (article/letter/editorial) | | Alteration Geochemistry of the Porphyry Cu-Au Deposit at Bajo de la Alumbrera, Argentina THOMAS ULRICH,â ,* ETH...geochemistry, as well as the ore mineralization history of Bajo de la Alumbrera, a world-class porphyry copper-gold...the andesites. Feldspar-destructive alteration (sericite + pyrite ± clay minerals ± gypsum) overprints...and have a closely overlapping distribution on the mine scale. A well-developed ore shell coincides with...1970). Because of its regular alteration zonation, Bajo de la Alumbrera in northwestern Argentina has been |  | | Book (volume) | | Field Trip Guide Book Vol. 6 MINERAL DEPOSITS OF JAPAN AND THE PHILIPPINES r QE 304 . A14 1992 v.6 The...Field Trip Guide Book Vol. 6 MINERAL DEPOSITS OF JAPAN AND THE PHILIPPINES The Society of Resource Geology...Tokyo 107, Japan 1992 29th IGC FIELD TRIP GUIDEBOOK Volume 6 : Mineral Deposits of Japan and the Philippines...building 9-6-41 Akasaka, Minato-ku, Tokyo 107, Japan Technical Editors Technical Reviewer: Editorial...Harufumi Noro Geological Survey of Japan 1-1-3 Higashi, Tsukuba 305, Japan Copyright Holder: The Society |  | | Journal (article/letter/editorial) | | Austria The shoshonite porphyry Cu-Au association at Bajo de la Alumbrera, Catamarca Province, Argentina D...December 15, 1997; accepted September 2, 1998 Summary Bajo de la Alumbrera forms an example of a series of...deposits that are hosted by potassic igneous rocks. The Bajo de la Alumbrera porphyry coppergold deposit is situated...overprinted by weak to moderate potassic or carbonate-sericite alteration. * Present address: North Limited,...derived from within-plate settings. The rocks from Bajo de la Alumbrera contain average ratios of Fe203/(FeO+Fe203) |  | | Journal (article/letter/editorial) | | Potential for Base and Precious To Metal Deposits in Japan 2020) Antonio ARRIBAS and Toshio MIZUTA Faculty...University, Akita, Japan Abstract There are no known porphyry copper deposits in Japan. Attempts were made...latter option. In this article, we focus on Akita Prefecture and the surrounding areas and consider the potential...northern Honshu and that it serves as a proxy for Japan in general. Akita is rich in mineralization styles...the late 1800s. Osarizawa, the last active vein mine, closed in 1978. Kuroko deposits, the main source |  | Allen, Charlotte M., Bryan, Scott E., Campbell, Ian H., Holcombe, Rodney J., Harris, Anthony C., Palin, J. Michael (2004) ELA-ICP-MS U?Pb zircon geochronology of regional volcanism hosting the Bajo de la Alumbrera Cu?Au deposit: implications for porphyry-related mineralization. Mineralium Deposita, 39 (1) 46-67 doi:10.1007/s00126-003-0381-0 | Journal (article/letter/editorial) | | geochronology of regional volcanism hosting the Bajo de la Alumbrera CuâAu deposit: implications for...intrusion of the earliest mineralized porphyries at Bajo de la Alumbrera (8.02±0.14 and 7.98±0.14 Ma). Regional...Ma, shortly before renewed magmatism occurred at Bajo de la Alumbrera (7.10±0.07 Ma). The latest porphyry...synchronously with the mineralized porphyries at Bajo de la Alumbrera. However, their emplacement continued...06 to 6.93±0.07 Ma) after the ïŹnal intrusion at Bajo de al Alumbrera. Regional volcanism had ceased by |  | | Journal (article/letter/editorial) | | also hosts the 7.1-Ma porphyryâ CuâAu deposit of Bajo de la Alumbrera. The epithermal vein system is characterised...activity ended prior to porphyryâCuâAu emplacement at Bajo de la Alumbrera, which is in turn cut by minor epithermal...The FarallĂłn Negro mining district (also known as Agua de Dionisio district; Peirano 1944; Angelelli 1984)...intensively studied, world-class porphyry deposits: Bajo de la Alumbrera (GonzĂĄlez 1975; Godeas and Segal...vein system is the most productive epithermal AuâAg mine in NW Argentina. It is operated by YMAD, a joint |  | | Journal (article/letter/editorial) | | Teniente (Howell and Molloy, 1960) (Fig. 2) feldspar-sericite-chlorite (LowellandGuilbert,1970). which show...the apparentsericiteage by 6-8 m.y. could spar-sericite-chlorite, with subordinate biotite and easilyhave...superim- here. Magmatism in the Faral16n Negro district posedon the potassiumsilicatealteration. As sug-...British Columbia, the Brenda composition in the Bajo del Duraznoarea (Fig. 5), porphyry copperand the...position in spaceand time with respect to Bajo de la A!umbreraand Bajo del Durazno (Fig. volcanic events can |  | | Journal (article/letter/editorial) | | writer's recent studies of the Saindak, Pakistan, and Bajo de La Alumbrera, Argentina, porphyry copper deposits...molybdenum around copper-gold cores at both Saindak and Bajo de La Alumbrera precludes the rigorous application...fact, of the deposits considered, only Saindak and Bajo de La Alumbrera, with molybdenum present in peripheral...CHARACTERISTICS PORPHYRY COPPER BaJo de. La Alumbrera, OF GOLD-RICH DEPOSITS Arg.entina At Bajo de La Alumbrera in...in the Faral16n Negro district, Catamarca province, northwest Argentina, an oval dacite porphyry stock |  | | Journal (article/letter/editorial) | | sources of gold mineralization in the Marmato mining district, NW Colombia: A MioceneâPliocene epizonal gold...gold mineralization occurs in the Marmato mining district, within the Calima Terrain of the Setentrional...Elsevier B.V. All rights reserved. Keywords: Marmato district; Colombia; Geochronology; Gold; Andes â Corresponding...505â518 1. Introduction The Marmato gold mining district is located in the Setentrional Andes of Colombia...well as the months of October and November. The district has been continuously producing gold since the |  | | Journal (article/letter/editorial) | | Clark, 1998), together with the Cu-Au porphyry of Bajo de la Alumbrera (Guilbert, 1995; Wall, 1997; Profett...a Cerro Atajo Bajo de la Alumbrera FarallĂłn Negro Capillitas S r ie e âČ âČ Bajo el Durazno Catamarca... 27° 20' r Bajo el Estanque Bajo de San Lucas Agua Rica 27° 30' Huasi CĂłndor Bajo las Juntas La...centers. Two Cu-Au-(Mo) porphyries, the Bajo de la Alumbrera mine (Guilbert, 1995; Wall, 1997; Ulrich et...Hug, 1999), and the FarallĂłn Negro silver and gold mine (Malvinci and LlambĂas, 1963; LlambĂas, 1970) are |  | Ford, A., Hagemann, S.G., Fogliata, A.S., Miller, J.M., Mol, A., Doyle, P.J. (2015) Porphyry, epithermal, and orogenic gold prospectivity of Argentina. Ore Geology Reviews, 71. 655-672 doi:10.1016/j.oregeorev.2015.05.013 | Journal (article/letter/editorial) | | deposits such as those in the El IndioâPascua gold district which hosts the Veladero and Pascua-Lama high...side of the border), and the Deseado Massif gold district which hosts, amongst others, the Cerro Vanguardia...Northwestern Argentina, CulampajĂĄ, FarallĂłn Negro-Bajo de la Alumbrera, El IndioâPascua, Nevados del Famatina...Massif. Below a brief description of the regional district geology and deposit setting is provided. For a...Hagemann (2011a). 2.1. North-western Argentina gold district in Juyuy, Salta and Catamarca provinces (Orogenic) |  | | Journal (article/letter/editorial) | | Geology Vol. 98, 2003, pp. 1535â1574 Geology of the Bajo de la Alumbrera Porphyry Copper-Gold Deposit, Argentina...772066, Eagle River, Alaska 99577 Abstract The Bajo de la Alumbrera porphyry Cu-Au deposit, Argentina...alteration, consisting mostly of veinlet-controlled sericite-quartz-pyrite, is younger than all secondary K-feldspar...inside and outside this shell. Pyrite veins with sericite-quartz-pyrite alteration cut Postmineral porphyries...leaching, and secondary enrichment. Introduction BAJO DE LA ALUMBRERA (referred to as âAlumbreraâ here |  | | Report (issue) | | deposits include El Teniente and El Salvador in Chile, Bajo de la Alumbrera in Argentina, Grasberg in Indonesia...2007). Phyllically altered rocks typically contain sericite, which is composed of muscovite that has a strong...minerals are quartz, K-feldspar, biotite, muscovite (sericite), magnetite, chlorite, anhydrite, and epidote...range in the El Teniente data is 380°â390°C. At Bajo de la Alumbrera, Argentina, Ulrich and others (2001)...range (excluding extrapolated temperatures) in the Bajo de la Alumbrera data is 470°â480°C. ââ 11 Bodnar |  | | Journal (article/letter/editorial) | | through potentially ore-grade potassic, chlorite-sericite, and sericitic, to advanced argillic, the last...low- to moderatesalinity liquid that causes the sericite-chlorite and sericitic alteration and associated...in magmatic arc settings. At the regional and district scales, the occurrence of many deposits in belts...Salvador Potrerillos Marte & Caspiche Taca Taca Bajo Bajo de la Alumbrera (FarallĂłn Negro dist.) & Agua...the geology of porphyry Cu systems at regional, district, and deposit scales. The resultant geologic model |  | | Journal (article/letter/editorial) | | Based on LA-ICP-MS Analysis of Fluid Inclusions: Bajo de la Alumbrera, Argentina THOMAS ULRICH,â ,* DETLEF...hydrothermal processes in the porphyry Cu-Au deposit of Bajo de la Alumbrera (northwestern Argentina) has been...the orebody. Geologic Setting The Cu-Au deposit of Bajo de la Alumbrera in northwestern Argentina (lat 27°30'...Relationships between the Porphyry Intrusions at Bajo de la Alumbrera Porphyry Timing relationships ...00 1744 EVOLUTION OF PORPHYRY Cu-Au DEPOSIT, BAJO DE LA ALUMBRERA, ARGENTINA 0.13) and a postore |  | | Journal (article/letter/editorial) | | Based on LA-ICP-MS Analysis of Fluid Inclusions: Bajo de la Alumbrera, Argentina THOMAS ULRICH,â ,* DETLEF...hydrothermal processes in the porphyry Cu-Au deposit of Bajo de la Alumbrera (northwestern Argentina) has been...the orebody. Geologic Setting The Cu-Au deposit of Bajo de la Alumbrera in northwestern Argentina (lat 27°30'...Relationships between the Porphyry Intrusions at Bajo de la Alumbrera Porphyry Timing relationships ...00 1890 EVOLUTION OF PORPHYRY Cu-Au DEPOSIT, BAJO DE LA ALUMBRERA, ARGENTINA 0.13) and a postore |  | | Journal (article/letter/editorial) | | fractures with early dark micaceous (EDM) halos of sericite, K-feldspar, biotite, andalusite, and local corundum...are quartz-molybdenite veins followed by quartz-sericite-pyrite veins. Cathodoluminescence (CL) petrography...between grades of copper and gold relative to district structure, vein types, and alteration in the context...in grade across intrusive contacts, we augmented mine blast hole and diamond drill hole assays with assays...and copper and gold grades. Based on unpublished mine geology maps by A.J. Maughan and A.J. Swenson (1990) |  | Jovic, SebastiĂĄn M., Guido, Diego M., Schalamuk, Isidoro B., RĂos, Francisco J., Tassinari, Colombo C. G., Recio, Clemente (2011) PingĂŒino In-bearing polymetallic vein deposit, Deseado Massif, Patagonia, Argentina: characteristics of mineralization and ore-forming fluids. Mineralium Deposita, 46 (3) 257-271 doi:10.1007/s00126-010-0324-5 | Journal (article/letter/editorial) | | Indium-polymetallic deposits comparing different deposits from Japan (Toyoha, IkunoAkenobe, etc.) and Bolivia (Bolivar...studied In-rich polymetallic veins from the Freiberg district, Germany, defining temperatures between 250° and...Indium concentration reported is the Toyoha deposit, Japan, being one of the worldâs largest leadâzincâ copperâindium...concentrations in the polymetallic veins from Freiberg district, Germany show a wide range between 0.1 and 1,560...consists of the Bajo Pobre, Cerro LeĂłn, Chon Aike and La Matilde Formations. The Bajo Pobre Formation |  | | Journal (article/letter/editorial) | | structural stock control Fish Lake Canada Bingham USA Bajo de La Alumbrera Argentina Refugio Chile Cadia Hill...million tonnes 1 2 3 6 7 8 9 Fish Lake Bingham Bajo de la Alumbrera Refugio Cadia Hill Panguna Ok Tedi...stocks (Table 1). Several of the deposits (e.g. Bajo de La Alumbrera, Batu Hijau) display molybdenumenriched...continental-margin and island-arc terranes (Table 1). Bingham and Bajo de La Alumbrera, both underlain by continental crust... 1985), the Hualfin and Aconquija lineaments at Bajo de La Alumbrera (Guilbert 1995) and the Lachlan |
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