 | | Journal (article/letter/editorial) | | Indonesia) and Nazareño (10 Ma; Cordillera Shila, southern Peru) were studied to investigate processes related...carriers, were found to be transformed into acanthite. Acanthite was also found locally in association with...identified as uytenbogaardtite (Ag3AuS2), and/or by acanthite, with both of the replacing minerals commonly...West Java, Indonesia, and Nazareño, ShilaPaula district, southern Perú, in order to examine the spatial...collected from surface exposures and underground mine levels. The mineralogy was determined from polished |  | Chauvet, Alain, Bailly, Laurent, André, Anne-Sylvie, Monié, Patrick, Cassard, Daniel, Tajada, Fernando Llosa, Vargas, Juan Rosas, Tuduri, Johann (2006) Internal vein texture and vein evolution of the epithermal Shila-Paula district, southern Peru. Mineralium Deposita, 41 (4) 387-410 doi:10.1007/s00126-006-0068-4 | Journal (article/letter/editorial) | | vein evolution of the epithermal Shila-Paula district, southern Peru Received: 28 July 2005 / Accepted:...Springer-Verlag 2006 Abstract The epithermal Shila-Paula Au–Ag district is characterized by numerous veins hosted...volcanic rocks of the Western Cordillera (southern Peru). Field studies of the ore bodies reveal a systematic...C., Luis N. Saenz 447-449, Jesus Maria, Lima 21, Peru J. Tuduri ISTO, CNRS-UMR 6113, University of Orléans...Epithermal gold . Breccia . Structural control . Peru Introduction Epithermal deposits often occur in |  | André-Mayer, Anne-Sylvie, Leroy, Jacques, Bailly, Laurent, Chauvet, Alain, Marcoux, Eric, Grancea, Luminita, Llosa, Fernando, Rosas, Juan (2002) Boiling and vertical mineralization zoning: a case study from the Apacheta low-sulfidation epithermal gold-silver deposit, southern Peru. Mineralium Deposita, 37 (5) 452-464 doi:10.1007/s00126-001-0247-2 | Journal (article/letter/editorial) | | low-sulfidation epithermal gold-silver deposit, southern Peru Received: 28 May 2001 / Accepted: 31 October 2001...in the Shila district, 600 km southeast of Lima in the Cordillera Occidental of Arequipa Province, southern...southern Peru. The vein mineralization is found in Early to Middle Miocene calc-alkaline lava flows and volcanic...base-metal sulfides with minor electrum 1 and acanthite; (2) brecciation of this mineral assemblage and... Christensen Keywords Epithermal gold-silver Æ Peru Æ Andes Æ Boiling A.-S. André-Mayer (&) Æ J.L |  | | Journal (article/letter/editorial) | | INTERMEDIATE-SULFIDATION PALLANCATA DEPOSIT, AYACUCHO, PERU Jorge E. GAMARRA-URRUNAGA§ International Minerals...to later open space infill resembles the Shila Paula district (Chauvet et al. 2006). Fluid inclusion petrography...chalcopyrite, polybasite-pearceite, argentite (now acanthite), and Au–Ag alloy (“electrum”). This Ag2S enrichment...of the system. The core is still undisclosed by mining works, but the available geochemical evidence (logAg/log...(stromeyerite) or in a supergene redistribution (stage 8, acanthite II). Keywords: Pallancata, intermediate sulfidation |  | | Journal (article/letter/editorial) | | The opaque minerals include pyrite, electrum, acanthite (Ag2S), sphalerite, and galena, which are common...not stable at temperatures >73–185°C, such as acanthite (Ag2S), aguilarite (Ag4SSe), naumannite (Ag2Se)...predominantly epithermal, Au–Ag deposits in USA, Peru, Russia, Indonesia, and New Zealand (Barton et al...conditions. In addition, we discuss relations among acanthite, aguilarite, and naumannite, including data that...2006). The main ore minerals are electrum and acanthite, and the host rock units Miner Deposita (2013) |  | | Journal (article/letter/editorial) | | Epithermal Silver Veins of the Arcata District, Southern Peru HUGO CANDIOq'rI DE LOS Rios, MauricioHochschildy..., S.A.,AvenidaRep•blica de Panamd3055, Lima 27, Peru DONALD C. NOBLE, MackaySchoolof Mines,Universityof...e,other Ag sulfosalts, argentiantetrahedrite,acanthite,andelectrum.Thesemineralsare accompanied by pyrite...increasingproductionof thesebasemetal-richores,the mine beganto producePb and Zn concentrates in November1989...greater depthsthan in the producingveinsof the district. Fluid inclusionstudiesgive Th between175ø and |  | Chinchilla, Darío, Ortega, Lorena, Piña, Rubén, Merinero, Raúl, Moncada, Daniel, Bodnar, Robert J., Quesada, Cecilio, Valverde, Antonio, Lunar, Rosario (2016) The Patricia Zn–Pb–Ag epithermal ore deposit: An uncommon type of mineralization in northeastern Chile. Ore Geology Reviews, 73. 104-126 doi:10.1016/j.oregeorev.2015.10.026 | Journal (article/letter/editorial) | | stephanite, pyrargyrite, freieslebenite and acanthite) and (3) post-ore stage; characterized by late...(Sillitoe, 2010), and it further reappears in southern Peru (Los Chancas, Cotabambas, Antapaccay, and Ataspaca...1b). Geographically, it occurs in the Tarapacá Province, I Región, Chile, at latitude 19˚81'S and longitude...carried out by Herencia Resources Plc over historical mine workings that date back to the nineteenth century...century. These historic workings focused on silver mining and consist of more than 1800 m of underground galleries; |  | | Journal (article/letter/editorial) | | in this environment. The world-class Martha Hill mine in the Hauraki goldfield of New Zealand (Figs. 1...state of structural information in the Martha Hill mine up to 1994, as presented by Cargill (1994), and...style towards the now-exposed deeper levels of the mine similar to the downward disappearance of microcrystalline...overseas. Regional and Local Geology The Martha Hill mine is part of the Hauraki goldfield on the Coromandel...Coromandel peninsula and location of the Martha Hill mine, modified after Skinner (1986), Brathwaite et al |  | | Journal (article/letter/editorial) | | (Ag3AuS2) or petrovskaite (AgAuS), or a mixture of acanthite (Ag2S) with uytenbogaardtite or uytenbogaardtite...uytenbogaardtite or petrovskaite, or a mixture of acanthite with uytenbogaardtite or uytenbogaardtite with...covered with black crusts of silver sulfide: acanthite (Ag2S). The study of the chemical composition...47 0 7.53 Note: n = number of analyses, Ac = acanthite, Uy = uytenbogaardtite, Pet = petrovskaite. centrations...4c and 4d). The dark-gray phase corresponds to acanthite, and the gray phase is uytenbogaardtite (Table |  | | Journal (article/letter/editorial) | | A SpecialIssueDevoted to the Mineral Depositsof Peru Preface ULRICH PETERSEN, Departmentof Earth and...PerubarS.A.,Juan de Arona 830 (Of 90I), Lima 27, Peru AND DONALD C. NOBLE MackaySchoolof Mines, Universityof...Accordingto Purser(1971) Spanishcolonialsilver mining faced three main problems:(1) downward drop in...wasmostlyusedfor the treatment of silver and gold ores in Peru, Bolivia, and Mexico (RodriguezHoyle, 1974). In...warsof independencein the 1820sthe Peruvianmetal mining industrycollapsedand then recoveredslowly (Fischer |  | | Journal (article/letter/editorial) | | at: No. 19, Beitucheng Western Road, Chaoyang District, 100029 Beijing, P.R. China. E-mail address:...metals for Mexico, the United States, Canada, Chile, Peru, Papua New Guinea, and Japan. Lindgren (1922, 1933)...in Altiplano province (Noble et al., 1990) as well as central and Northern part of Peru (Kamilli and...Ciobanu et al., 2002; Grancea et al., 2002), Baguio district of the Philippines and Morobe goldfield of Papua...deposits also contain electrum, native gold, acanthite-argentite, and many other silver sulfosalts minerals |  | | Journal (article/letter/editorial) | | subsequently rotated. Regional Geology The Golden Cross mine exploited shallow epithermal AuAg–bearing quartz-adularia...to as the Empire zone. The most recent phase of mining in this area concentrated on the Empire zone, located...open-cast mining methods from 1991 to mine closure in 1998. Combined historic and recent mining produced...veins with gold and silver occurring as electrum, acanthite, polybasite, pyrargyrite, and associated minor...underground faces and open-pit walls throughout the mine area during a five-month period in 1996. Exposures |  | Tuduri, Johann, Chauvet, Alain, Barbanson, Luc, Bourdier, Jean-Louis, Labriki, Mohamed, Ennaciri, Aomar, Badra, Lakhlifi, Dubois, Michel, Ennaciri-Leloix, Christelle, Sizaret, Stanislas, Maacha, Lhou (2018) The Jbel Saghro Au(–Ag, Cu) and Ag–Hg Metallogenetic Province: Product of a Long-Lived Ediacaran Tectono-Magmatic Evolution in the Moroccan Anti-Atlas. Minerals, 8 (12). 592pp. doi:10.3390/min8120592 | Journal (article/letter/editorial) | | Jbel Saghro Au(–Ag, Cu) and Ag–Hg Metallogenetic Province: Product of a Long-Lived Ediacaran Tectono-Magmatic...as part of a long-lived silicic large igneous province. The area comprises two lithostructural complexes...Keywords: structural control; silicic large igneous province; ignimbrite flare-ups; ash-flow caldera; epithermal;...of Triassic when the Central Atlantic Magmatic Province (CAMP) was emplaced [9–11]. According to Ernst...geodynamical environment at the origin of such a silicic province remain insufficiently understood, although Moume |  | | Book | | Universidad Nacional de lngenieria, and Newmont Peru Limited Gerente de Exploraciones Av. Jose Galvez...Galvez Barrenechea 218, Urb. Corpac Lima-San Isidro, Peru Prof. Dr. ESTEBAN CEDILW Facultad de Minas, Metalurgia...place in September 1986 in Cusco, Peru, sponsored by Multiciencias (Peru) and UNESCO. During this seminar...Latorre, Director of the Multiciencias courses in Peru strongly supported the whole organization of the...Occurrences in the Paleozoic of the Yauli Dome, Central Peru H. W. Kobe . . . . . . . . . . . . . . . . . . |  | | Conference Proceedings (Volume) | | copper mine in the very north of Sweden. Mining operations started in 1968 and the current mining depth...area of the Kristineberg VHMS deposit, Skellefte district, Sweden .......................................A. Massive Zn-Cu-Pb deposits in the Røros ore district, Norway: setting and formation ................Matos The Jörn granitoid complex, Skellefte mining district, Sweden: petrography, lithogeochemistry and...for VHMS deposits, Kristineberg area, Skellefte District, Sweden ..................................... |
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