 | | Journal (article/letter/editorial) | | Porphyry Copper Deposit: The Cerro Colorado Hypogene Protore, I Región, Northern Chile FARHAD BOUZARI,†,* AND...supergene orebody of the Cerro Colorado porphyry Cu (-Mo) deposit, I Región, Chile, exhibits features not...grained but texture-preserving biotite (≤35 modal %)-albite (≤40%)-magnetite (≥3%) alteration, 8 km2 in area...which comprises, with decreasing depth, quartz-albite, sericite-chlorite-clay (smectite), quartz-sericite-clay...each sulfide-depositing alteration episode at Cerro Colorado was generated by a pulse of high-temperature |  | | Journal (article/letter/editorial) | | Supergene Orebody of the Cerro Colorado Porphyry Copper Deposit, I Región, Northern Chile FARHAD BOUZARI† AND...Ontario K7L 3N6, Canada Abstract The 51.8 Ma Cerro Colorado porphyry Cu(-Mo) deposit is situated at 20º...Cordillera Occidental. Supergene processes at Cerro Colorado generated a complex weathering profile that...the initiation of the Incaic orogeny in northern Chile. An age of 35.26 ± 0.68 (2σ) Ma for alunite associated...dispersion of metal. Evidence from Cerro Colorado and elsewhere in northern Chile (e.g., Spence and Angelina) |  | Tsang, Debbie P.W., Wallis, Simon R., Yamamoto, Koshi, Takeuchi, Makoto, Hidaka, Hiroshi, Horie, Kenji, Tattitch, Brian C. (2018) Zircon U–Pb geochronology and geochemistry of the Cerro Colorado porphyry copper deposit, northern Chile. Ore Geology Reviews, 93. 114-140 doi:10.1016/j.oregeorev.2017.12.019 | Journal (article/letter/editorial) | | and Geochemistry of the Cerro Colorado Porphyry Copper Deposit, Northern Chile Debbie P.W. Tsang, Simon...and Geochemistry of the Cerro Colorado Porphyry Copper Deposit, Northern Chile, Ore Geology Reviews (2017)...and Geochemistry of the Cerro Colorado 2 Porphyry Copper Deposit, Northern Chile 3 Debbie P.W. Tsang1...deposits; U– U–Pb geochronology; Northern 20 Chile; Timing of Magmati Magmatism agmatism; sm; Volcanism...examined cores extracted from Cerro Colorado, an 73 active PCD mine site that lies at the northern |  | | Journal (article/letter/editorial) | | Cretaceous and Tertiary granitoids in northern Chile. Introduction Emplacement of hot magma into cool...rock types studied The Precordillera of northern Chile between 18° and 22°S exposes a series of Cretaceous...location map (Fig. 1) shows that the CTGs in northern Chile are exposed in a relatively narrow zone of the Precordillera...transition zones to the Longitudinal Valley (Pampa del Tamarugal) in the west and to the Western Cordillera in...not exceeding 10 km2 in outcrop, except Cerro Colorado and Cerro Ceucis, both of which are multiintrusive |  | | Journal (article/letter/editorial) | | pyroxene and mica.” He also mentions “rhyolite” at Cerro de la Mojonera, near Mapimi. The Ojuela mining district...limestone replacement deposits of the Mexican province* Eng. Min. Jour., vol. 122 (1926) p. 289-293....included in Plate 5 is part of a large valley province north of the Sierra de Mapimi. The most prominent...ones extending from the Parselos to northwest of Cerro Prieto, the highest peak in the district. Elevations...one road crosses the range, in a saddle between Cerro Prieto and F ig u re 1.—Index map of part of Showing |  | Barra, Fernando, Reich, Martin, Selby, David, Rojas, Paula, Simon, Adam, Salazar, Eduardo, Palma, Gisella (2017) Unraveling the origin of the Andean IOCG clan: A Re-Os isotope approach. Ore Geology Reviews, 81. 62-78 doi:10.1016/j.oregeorev.2016.10.016 | Journal (article/letter/editorial) | | (CEGA), FCFM, D Universidad de Chile, Plaza Ercilla 803, Santiago, Chile Department of Earth Sciences...Barra Departamento de Geología, Universidad de Chile, Chile fbarrapantoja@ing.uchile.cl Phone: 56-2-29784532...IOCG clan in the Coastal Cordillera of northern Chile, comprises the PT iron oxide-Cu-Au sensu stricto...deposits constitute the second source of copper in Chile, after porphyry Cu-Mo systems, whereas SC IOAs...that the Cretaceous Manto-type Cu belt of central Chile extends further north than previously thought. Additionally |  | | Journal (article/letter/editorial) | | brief outline of the regional geology of this ore province is given, and the geology of three mining districts...Lousal (Portugal), La Zarza and Tharsis (Huelva Province, Spain). A close relationship between sulphide...bref aper~u de la g6ologie r6gionale de cette province metallif6re est present6, et la g6ologie de trois...contents. An important copper mine was recently started at Rio Tinto (Cerro Colorado), where underneath the...(Portugal), La Zarza and Tharsis (both Huelva Province, Spain). Attention will be drawn to the close |  | Masterman, G. J., Cooke, D. R., Berry, R. F., Clark, A. H., Archibald, D. A., Mathur, R., Walshe, J. L., Duran, M. (2004) 40Ar/39Ar and Re-Os Geochronology of Porphyry Copper-Molybdenum Deposits and Related Copper-Silver Veins in the Collahuasi District, Northern Chile. Economic Geology, 99 (4) 673-690 doi:10.2113/gsecongeo.99.4.673 | Journal (article/letter/editorial) | | Copper-Silver Veins in the Collahuasi District, Northern Chile GLENTON J. MASTERMAN,†,* DAVID R. COOKE, RON F....Inés de Collahuasi SCM, Pedro Lagos 1090, Iquique, Chile Abstract The Rosario and Ujina porphyry Cu-Mo deposits...associated with the Domeyko fault system in northern Chile. At Rosario, fault-hosted Cu-Ag–rich massive sulfide...that make up the Collahuasi district in northern Chile occurs within an inlier of Paleozoic basement bounded...3). Historically, mining activity focused on the Cerro La Grande, Poderosa, and Monctezuma areas where |  | Fogliata, A.S., Báez, M.A., Hagemann, S.G., Santos, J.O., Sardi, F. (2012) Post-orogenic, Carboniferous granite-hosted Sn–W mineralization in the Sierras Pampeanas Orogen, Northwestern Argentina. Ore Geology Reviews, 45. 16-32 doi:10.1016/j.oregeorev.2011.12.001 | Journal (article/letter/editorial) | | granite in the Sierra de Mazán, the Cerro Colorado granite in the Cerro Negro, and the Los Mudaderos and...on zircons from the Cerro Colorado and La Quebrada granites, located in the Cerro Negro and Sierra de...Regional geological setting The Sierras de Velasco, Cerro Negro and Ancasti are located in the Sierras Pampeanas...of the Cerro Negro This mountain chain is located in the southeast of the Catamarca province and composed...This stock is in contact with tonalites of the Cerro Colorado (Martínez, 1978). The overlying units consist |  | Franchini, M., Lira, R., Meinert, L., Rios, F. J., Poklepovic, M. F., Impiccini, A., Millone, H. A. (2005) Na-Fe-Ca Alteration and LREE (Th-Nb) Mineralization in Marble andGranitoids of Sierra de Sumampa, Santiago del Estero, Argentina. Economic Geology, 100 (4) 733-764 doi:10.2113/gsecongeo.100.4.733 | Journal (article/letter/editorial) | | intracontinental magmatic event of Devonian age. Albite (Ab97-99) + aegirine (Ae70-92Ja1-11Q6-19) ± hematite...(Ae86-91Ja1-8Q6-11) ± Mg-arfvedsonite and minor albite (Ab98-99) in adjacent marble, with multiple stages...located in the Oriental Pampean Ranges of San Luis province (Lira and Ripley, 1992; Lira et al., 1999a), and...provinces (Sierra de Cobres, Sierra de Tusaquillas, Cerro Fundición, and Hornillos) (Toselli and Rossi de...1999a). The Sierra de Cobres, Sierra de Tusaquillas, Cerro Fundición, and Hornillos LREE-Th prospects of Puna |  | | Journal (issue) | | PYROMORPHITE crystal group, 6 cm tall, from the Bunker Hill mine, Kellogg, Idaho. James and Dawn Minette collection;...400 species), and U.S. minerals, espe cially Colorado pegmatite minerals. As is often the case among...fro m the locality. INTRODUCTION The Higher Pitts mine is situated near to the village of Priddy in the...meters below. The shallow, dry valley in which the mine workings are located leads via Dursdon Wood to Ebbor...include the Higher Pitts mine workings. The area surrounding the Higher Pitts mine has long been used for |  | Baker, Michael J., Wilkinson, Jamie J., Wilkinson, Clara C., Cooke, David R., Ireland, Tim (2020) Epidote Trace Element Chemistry as an Exploration Tool in the Collahuasi District, Northern Chile. Economic Geology, 115 (4). 749-770 doi:10.5382/econgeo.4739 | Journal (article/letter/editorial) | | Exploration Tool in the Collahuasi District, Northern Chile Michael J. Baker,1,2,† Jamie J. Wilkinson,1,3,4...Australia Abstract The Collahuasi district of northern Chile hosts several late Eocene-early Oligocene world-class...deposit from the Collahuasi district of northern Chile. Our results show that the geochemical footprints...Collahuasi district is situated in region I in northern Chile, on the western slope of the Central Andean Cordillera...Eocene-Oligocene porphyry Cu-Mo belt of northern Chile (Fig. 1). The district is centered on the world-class |  | | Journal (article/letter/editorial) | | batholith in Nevada, and associated with the Yerington mine and the AnnMason deposit, provide a basis of comparison...Laramide, mid-Mesozoic) Limit of Basin and Range Province copper deposits post-Laramide cover Laramide...America, showing the limit of the Basin and Range province, the schematic representation of domains that... ROOT ZONES OF PORPHYRY SYSTEMS Potrerillos, Chile (Olson, 1989), were dismembered in contractional... 1984; Dilles et al., 2000). Both the Yerington mine and Ann-Mason deposits are exposed continuously |  | Quang, C. X., Clark, A. H., Lee, J. K. W., Guillen B., J. (2003) 40Ar-39Ar AGES OF HYPOGENE AND SUPERGENE MINERALIZATION IN THE CERRO VERDE-SANTA ROSA PORPHYRY Cu-Mo CLUSTER, AREQUIPA, PERU. Economic Geology, 98 (8) 1683-1696 doi:10.2113/gsecongeo.98.8.1683 | Journal (article/letter/editorial) | | OF HYPOGENE AND SUPERGENE MINERALIZATION IN THE CERRO VERDE-SANTA ROSA PORPHYRY Cu-Mo CLUSTER, AREQUIPA...JORGE GUILLÉN B. Sociedad Minera Cerro Verde S.A., Asiento Minero Cerro Verde-Uchumayo, Avenida Alfonso...Casilla 299, Arequipa, Peru Abstract The contiguous Cerro Verde and Santa Rosa porphyry copper deposits are...dates of 61.8 ± 0.7 (2σ) and 62.0 ± 1.1 Ma for Cerro Verde, and 62.2 ± 2.9 Ma for Santa Rosa, representing...identified by multiple analyses of a sample from Cerro Verde comprising alunite partially replaced by natroalunite |  | Carrasco-Núñez, Gerardo, Righter, Kevin, Chesley, John, Siebert, Lee, Aranda-Gómez, José Jorge (2005) Contemporaneous eruption of calc-alkaline and alkaline lavas in a continental arc (Eastern Mexican Volcanic Belt): chemically heterogeneous but isotopically homogeneous source. Contributions to Mineralogy and Petrology, 150 (4) 423-440 doi:10.1007/s00410-005-0015-x | Journal (article/letter/editorial) | | primitive lavas in the region (Rı́o Naolinco and Cerro Colorado) are not as primitive as parental melts in...Institution, Washington, DC 20013-7012, USA Cerro Colorado basalt. Although calc-alkaline and alkaline...Miocene to Recent, E–W trending, active volcanic province that crosses Central Mexico (Fig. 1). It is generally...northernmost prehistoric active volcano of that province. Nature of the volcanism Volcanism in the Cofre...of the CPVC. The youngest group includes the Cerro Colorado (undated) and Rincón de Chapultepec lavas |  | | Report (issue) | | metamorphic belts of Ecuador CQVer photograph Cerro Hermoso in the Llanganates mountains, a l'olded...metamorphosed carbonate sequence, recently glaciated Cerro Hermoso (4571 1n) from the sout hwest, a folded...Salado terrane 27 Upano unit 27 Cuyuja unit 30 Cerro Hermoso unit 30 Azafran granitoids 32 Contact rocks...25 Geological map and section of the area around Cerro Hennoso 31 Geochrolological plots of theAzafran...1neta1norphic rock are Cerro Soroche (4730 m), Sara Urcu (4670 m ) and Cerro Hermoso COSTA (Coastal |  | | Journal (article/letter/editorial) | | mineralizations, despite the absence of the latter in the Cerro Baritina aplites, where this process preceded the...(we would add the possible exception of the Naica Mine, if we take into account the small halite grains...halite crystals were or were not found in the Naica mine, the first confident report of halite and sylvite...collected from syenogranitic aplite dikes (the Cerro Baritina aplites = CB) and an epizonal miarolitic...Paleozoic La Puerta Formation, and Cretaceous Cerro Colorado Formation). During the Late Carboniferous and |  | | Journal (article/letter/editorial) | | Cordillera) extending into southern Bolivia, northeastern Chile, and southwestern Peru. Exposures are much more...with rhyolites in the easternmost sector of this province. The period of convergence ended with a continental...high Andean Cordillera and the Coast Ranges of Chile. INTRODUCTION Lower Paleozoic magmatism in South...Argentina extending into southern Bolivia, northeastern Chile, and coastal areas of southwestern Peru. Igneous...southernmost tip of the province (Fig. 3). South of these Sierras as far as the Colorado River, which marks |  | | Report (issue) | | ........................ 11 9. Flows of El Cerro Colorado .................................................................................... 16 12. Cerro Negro cauldron ............................................................. 18 13. Vent east of Cerro Montoso ................................................................................. 20 15. Cerro del Oro cinder cone ..............................region of the Colorado Volcanic rocks in the Ocate area were first noted by Plateaus province. Major eruptions |  | | Journal (article/letter/editorial) | | central Chile; A.J. Wilson, writ. commun., 2009) and Mo (2.5 Mt: El Teniente, central Chile; Camus, 2003)...El Teniente Mamut Grasberg-Ertsberg Ok Tedi Cerro de Pasco & Colquijirca Choquelimpie Esperanza Escondida...Escondida & Chimborazo Panguna Cerro Colorado Collahuasi dist. Bau Batu Hijau El Abra Cabang Kiri...to global-scale anomalies for Cu (e.g., northern Chile-southern Peru, southwestern North America) or Au...belt and an intra-arc fault zone: the northern Chile part of the central Andean middle Eocene to early |  | Wang, Yunfeng, Chen, Huayong, Xiao, Bing, Han, Jinsheng, Fang, Jing, Yang, Juntao, Jourdan, Fred (2018) Overprinting mineralization in the Paleozoic Yandong porphyry copper deposit, Eastern Tianshan, NW China—Evidence from geology, fluid inclusions and geochronology. Ore Geology Reviews, 100. 148-167 doi:10.1016/j.oregeorev.2017.04.013 | Journal (article/letter/editorial) | | (weighted mean), consistent with the late quartz albite porphyry age (zircon U-Pb: 323.6 ± 2.5 Ma). Consequently...long been recognized as an important metallogenic province in Xinjiang, NW China (Han et al., 2006; Mao et...diorite porphyry and was locally crosscut by quartz albite porphyry (Fig. 3). An anticlinal fold occurs in...and the Qi’eshan Group, and less in the quartz albite porphyry (Fig. 2b, 3). In addition, the deposit...volcanic rocks, and as disseminations in the quartz albite porphyry. 4. Alteration and mineralization paragenesis |  | | Journal (article/letter/editorial) | | evolution of the Sierras Australes (Buenos Aires Province / Argentina) By W. VONGOSEN,W. BUGGISCH,Erlangen...(1930) whereas a more detailed description of the Cerro del Corral area is published by VAR~LA etal. (1986)...basement. These are Rb/Sr whole rock data of the Cerro Colorado granite (407+21 Ma) and the Ermita rhyolite...cleavage). E - SW dipping second shear zone in the Cerro Colorado granite with S/C-fabrics ($2s, $2c) and overall...stress axis (ol) during strike-slip shearing9 Cerro Colorado granite (Fig. 1) where s2c planes The compressive |  | | Journal (article/letter/editorial) | | Summitville, USA, La Granja, Peru, La Escondida, Chile (STOFFREGEN & ALPERS 1987), Valence Mountains and...and SrLα. The standards used were: orthoclase, albite, andradite and apatite (for K, Na, Fe, Ca and P)...that are separated from quartz (and K-feldspar/albite) by a sericite rim (Figs. 2d and 3a). Electron...Kassiteres-Sapes area. a. Corundum (Crn) separated from albite/K-feldspar (Fsp) and quartz (Qz) by a sericite...Philippines (HEDENQUIST et al. 1998), El Salvador, Chile (WATANABE & HEDENQUIST 2001), Hugo Dummett, Mongolia |  | Izaguirre, Aldo, Iriondo, Alexander, Kunk, Michael J., McAleer, Ryan J., Atkinson, William W., Martínez-Torres, Luis M. (2017) Tectonic Framework for Late Cretaceous to Eocene Quartz-Gold Vein Mineralization from the Caborca Orogenic Gold Belt in Northwestern Mexico*. Economic Geology, 112 (6) 1509-1529 doi:10.5382/econgeo.2017.4519 | Journal (article/letter/editorial) | | University of Colorado at Boulder, Boulder 80309, Colorado, USA of Geology and Geology Museum, Colorado School...School of Mines, Golden 80401, Colorado, USA 6 Departamento de Geodinámica, Universidad del País Vasco...orogenic gold belt is a large gold metallogenic province located in the North American Cordillera that...Caborca orogenic gold belt is a gold metallogenic province located in the North American Cordillera that...copper-molybdenum porphyry belt (CMPB US-MEX). Colorado River Fairbanks/ Tintina Klondike Age 104–61 |  | | Report (issue) | | ......... Creasus mine ........................................ 77 Red Jacket mine ....................and mineralogic boundaries in the crystalline province. Tusas Mountains . . . . . . . . . . . . . . ...district .................... 78 8. Mine and sample map of the Croesus mine . . . . . . . . . . . . . . 79...showing location of the Eureka mine . . . . . . . . . 98 13. Mine map, Eureka mine ...........................commonpegmatiteminerals,quartz,microcline, and albite, in addition to the accessory minerals, garnet |
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