 | | Journal (article/letter/editorial) | | of Northern Chile Preface FRANCISCO CAMUS † Codelco-Chile, Huérfanos 1270, Santiago, Chile AND JOHN H...University, Corvallis, Oregon 97331 Introduction Chile is known worldwide as the site of one of the largest...circum-Pacific belt. Among them are the three largest of all, El Teniente, Río Blanco-Los Bronces, and Chuquicamata...production of more than 50 Mt of fine copper. Currently, Chile annually produces about 4.6 Mt of fine copper that...exploration efforts in the Central Andes with emphasis in Chile. During the past 25 years, exploration expenditures |  | Palacios, Carlos, Ramírez, Luis E., Townley, Brian, Solari, Marcelo, Guerra, Nelson (2007) The role of the Antofagasta–Calama Lineament in ore deposit deformation in the Andes of northern Chile. Mineralium Deposita, 42 (3) 301-308 doi:10.1007/s00126-006-0113-3 | Journal (article/letter/editorial) | | of the Antofagasta–Calama Lineament in ore deposit deformation in the Andes of northern Chile Carlos...Eocene, and Late Eocene–Early Oligocene. The Antofagasta–Calama Lineament (ACL) consists of an important...(41–44 Ma; Esperanza, Telégrafo, Centinela, and Polo Sur ore deposits). These observations suggest that right-lateral...this extensively gravel-covered region of northern Chile. Editorial handling: R. King C. Palacios (*) : L...Departamento de Geología, Universidad de Chile, Santiago, Chile e-mail: cpalacio@ing.uchile.cl N. Guerra |  | Djouka-Fonkwe, M. L., Kyser, K., Clark, A. H., Urqueta, E., Oates, C. J., Ihlenfeld, C. (2012) Recognizing Propylitic Alteration Associated with Porphyry Cu-Mo Deposits in Lower Greenschist Facies Metamorphic Terrain of the Collahuasi District, Northern Chile--Implications of Petrographic and Carbon Isotope Relationships. Economic Geology, 107 (7) 1457-1478 doi:10.2113/econgeo.107.7.1457 | Journal (article/letter/editorial) | | Metamorphic Terrain of the Collahuasi District, Northern Chile—Implications of Petrographic and Carbon Isotope... Oates,2 and Christian Ihlenfeld3 1 Department 2 El of Geological Sciences and Geological Engineering...located on the Andean high plateau of northern Chile. Late Eocene-early Oligocene mineralization in the...of the Cu-rich Collahuasi district of northern Chile cannot be distinguished by chemical mass changes...Eocenelower Oligocene porphyry Cu-Mo belt of northern Chile, extending from 20°45'S to 21º07'S and 68º75'W to |  | | 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...central Chile; A.J. Wilson, writ. commun., 2009) and Mo (2.5 Mt: El Teniente, central Chile; Camus, 2003)...Toquepala & Cuajone Los Pelambres Los BroncesRío Blanco El Teniente Mamut Grasberg-Ertsberg Ok Tedi Cerro...Hijau El Abra Cabang Kiri Chuquicamata dist. Koloula Frieda River dist.(Nena) Wafi-Golpu Gaby El |  | Braxton, D. P., Cooke, D. R., Ignacio, A. M., Rye, R. O., Waters, P. J. (2009) Ultra-Deep Oxidation and Exotic Copper Formation at the Late Pliocene Boyongan and Bayugo Porphyry Copper-Gold Deposits, Surigao, Philippines: Geology, Mineralogy, Paleoaltimetry, and their Implications for Geologic, Physiographic, and Tectonic Controls. Economic Geology, 104 (3) 333-349 doi:10.2113/gsecongeo.104.3.333 | Journal (article/letter/editorial) | | Cuajone (Pe) Ujina (Cl) Gaby (Cl) Rosario (Cl) Morenci; NW extension (Az) El Salvador (Cl) Chuquicamata...Toquepala (Pe) Cerro Colorado (Cl) Ok Tedi (PNG) El Abra (Cl) Mocoa (Co) Boyongan (Ph) La Escondida...Locality abbreviations: Az = Arizona (USA), Cl = Chile, Co = Colombia, NM = New Mexico (USA), Pe = Peru...Absent Thickness (m) El Salvador Los Pelambres El Teniente La Escondida Chile El Abra Cerro Colorado...Colorado Rosario Ujina Chuquicamata Gaby Deposit Leached cap TABLE 1. (Cont.) OXIDATION AND COPPER FORMATION |  | | Book (volume) | | existence o f a new unconformity-vein style uranium province in the Proterozoic of the Great Sandy Desert............................................ 65 T he El T eniente M egabreccia D eposit，th e W o rld ’s L...the largest deposits in any established porphyry province. For a discussion of the accepted terminology...localised in the U.S. “South-west”， and in northern Chile and southern Peru，and were Cu-Mo orebodies (Gilmour...Cook and Porter;all in this publication) and in Chile, Argentina and Peru in South America (see Camus; |  | Rusk, Brian G., Reed, Mark H., Dilles, John H., Klemm, Leonhard M., Heinrich, Christoph A. (2004) Compositions of magmatic hydrothermal fluids determined by LA-ICP-MS of fluid inclusions from the porphyry copper–molybdenum deposit at Butte, MT. Chemical Geology, 210 (1) 173-199 doi:10.1016/j.chemgeo.2004.06.011 | Journal (article/letter/editorial) | | released from biotite and feldspars as they alter to sericite. In halite-bearing inclusions, concentrations...monzonite that has been pervasively altered to quartz, sericite, and pyrite. The Continental Fault upwardly displaces...chalcopyrite – pyrite veins with biotite –K-feldspar – sericite alteration (early dark micaceous or EDM veins...K-feldspar, chlorite, minor plagioclase, and pale green sericite (PGS alteration of Reed, 1980). Most pre-Main...have alteration envelopes of quartz, pyrite, and sericite (Reed, 1980; Geiger et al., 2002). In the uppermost |  | Lee, Robert G., Dilles, John H., Tosdal, Richard M., Wooden, Joseph L., Mazdab, Frank K. (2017) Magmatic Evolution of Granodiorite Intrusions at the El Salvador Porphyry Copper Deposit, Chile, Based on Trace Element Composition and U/Pb Age of Zircons. Economic Geology, 112 (2) 245-273 doi:10.2113/econgeo.112.2.245 | Journal (article/letter/editorial) | | Granodiorite Intrusions at the El Salvador Porphyry Copper Deposit, Chile, Based on Trace Element Composition...magmatic-hydrothermal porphyry Cu (MoAu) ores in the El Salvador district, Chile. Zircons (n = 240) from 15 Eocene age...Turquoise Gulch were the most strongly oxidized of the El Salvador magmas. The strongly oxidized trend porphyry...and Proffett, 1995) and the El Abra-Fortuna granodiorite complex, Chile (1–2 m.y., Dilles et al., 1997;...Chuquicamata, Chile (2–3 m.y., Reynolds et al., 1998; Ballard et al., 2001), the Potrerillos district, Chile (8 |  | | Journal (article/letter/editorial) | | rite-quartz veins with wide K-feldspar, green sericite, and chlorite alteration (pale-green sericitic...North, Australia (Harris and Golding, 2002); Gaby Sur, Chile (J. Dilles, unpub. data); and Butte, Montana...dome, including both core and hand samples taken by mine geologists over the past 100 years. A few samples...Main stage veins were analyzed for completeness. Mine exposures and deep drilling reveal that pre-Main...of rock that is pervasively altered to quartz, sericite, and pyrite. The Continental fault displaces the |  | Anderson, E. D., Hitzman, M. W., Monecke, T., Bedrosian, P. A., Shah, A. K., Kelley, K. D. (2013) Geological Analysis of Aeromagnetic Data from Southwestern Alaska: Implications for Exploration in the Area of the Pebble Porphyry Cu-Au-Mo Deposit. Economic Geology, 108 (3) 421-436 doi:10.2113/econgeo.108.3.421 | Journal (article/letter/editorial) | | the numerous porphyry copper deposits in northern Chile. These anomalies are interpreted to reflect a Late...of intensely altered rocks that includes quartz-sericite-pyrite, propylitic, and lesser K-silicate assemblages...early Oligocene porphyry copper belt of northern Chile (Fig. 9). These clusters are spaced 20 to 100 km...DEPOSIT, SW ALASKA A Northern Chile Ujina Collahuasi Conchi El Abra Gaby Sur Chuquicamata Minsa Mina Toki...northern Chile and southwestern Alaska. Porphyry copper deposit clusters in northern Chile and upward |  | | Book (volume) | | families or groups of villagers purchase a licence to mine; in other areas there is little regulation, and...buyer) will, by building relationships with miners, mine owners, and local traders, gain expertise and some...such as a particularly fine-coloured gemstone or a mine that is producing particularly clean large specimens...sorted. Following the establishment of the Burma Ruby Mine Company in Victorian times, some mining techniques...blasting for a new tunnel in the Naica silver and lead mine of central Chihuahua, Mexico, miners found two underground |  | | Book | | Ore Minerals: Evidence for South Crofty Tungsten Mine, Cornwall, United Kingdom . . . . . . . . . . ....exemplified by a quartz sample from the Ramsbeck Mine, F.R.G. Nucl Geophys 3:41–48 Ghazi AM, Vanko DA...how long, at a given production rate, a potential mine may produce economically viable product for at least...SIBELCO near Robilante/Italy Fig. 3.7 Underground mine for sand near Pula/Croatia in 2000 Southern Europe...The raw material was mined in the last underground mine of Croatia until 2000 (Fig. 3.7). After the political |
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