 | Tsang, Debbie P.W., Wallis, Simon R., Yamamoto, Koshi, Takeuchi, Makoto, Hidaka, Hiroshi, Horie, Kenji, Tattitch, Brian C. (2018) Zircon UāPb 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) | | UāPb Geochronology and Geochemistry of the Cerro Colorado Porphyry Copper Deposit, Northern Chile Debbie...UāPb Geochronology and Geochemistry of the Cerro Colorado Porphyry Copper Deposit, Northern Chile, Ore...UāPb Geochronology and Geochemistry of the Cerro Colorado 2 Porphyry Copper Deposit, Northern Chile...examined cores extracted from Cerro Colorado, an 73 active PCD mine site that lies at the northern...Charrier et al., 2007). The 75 cores supplied by the mine site sample all the main rock types of this 76 |  | | Journal (article/letter/editorial) | | Affinities of a Major Porphyry Copper Deposit: The Cerro Colorado Hypogene Protore, I RegiĆ³n, Northern Chile...protore underlying the supergene orebody of the Cerro Colorado porphyry Cu (-Mo) deposit, I RegiĆ³n, Chile...decreasing depth, quartz-albite, sericite-chlorite-clay (smectite), quartz-sericite-clay, and andalusite-diaspore-pyrophyllite...subsequent Transitional-stage phyllic (i.e., quartz-sericite-pyrite Ā± tourmaline) alteration was associated...primarily responsible for the formation of the quartz-sericite-clay and shallow advanced argillic alteration |  | | Journal (article/letter/editorial) | | Significance of the Supergene Orebody of the Cerro Colorado Porphyry Copper Deposit, I RegiĆ³n, Northern...Ontario K7L 3N6, Canada Abstract The 51.8 Ma Cerro Colorado porphyry Cu(-Mo) deposit is situated at 20Āŗ...Cordillera Occidental. Supergene processes at Cerro Colorado generated a complex weathering profile that...lateral dispersion of metal. Evidence from Cerro Colorado and elsewhere in northern Chile (e.g., Spence...with formation of the Lower Leached zone at Cerro Colorado. The pyrite-rich hypogene assemblages of the |  | | Journal (article/letter/editorial) | | pyroxene and mica.ā He also mentions ārhyoliteā 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.āIndex map of part of Showing |  | Fogliata, A.S., BĆ”ez, M.A., Hagemann, S.G., Santos, J.O., Sardi, F. (2012) Post-orogenic, Carboniferous granite-hosted SnāW 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 MazĆ”n, 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 (MartĆnez, 1978). The overlying units consist |  | | Journal (article/letter/editorial) | | Chuquicamata from the lower temperature Ž- 3508C. quartzāsericite alteration phase. Four K-feldspars from the potassic...be unreliable. Four sericites from the quartzāsericite zone yielded variably discordant age spectra....alteration event. Some K-feldspars in the quartzāsericite zone were completely overprinted at this later...to decrease as distance from the central quartzāsericite zone increases. In the more remote areas, effects...prior to rapid exhumation of the system. Quartzāsericite alteration, perhaps caused by a new pulse of porphyry |  | 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 GUILLĆN 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...incremental-heating 40Ar-39Ar sericite (muscovite-2M1) dates of 61.8 Ā± 0.7 (2Ļ) and 62.0 Ā± 1.1 Ma for Cerro Verde, and 62...identified by multiple analyses of a sample from Cerro Verde comprising alunite partially replaced by natroalunite |  | BalliviĆ”n Justiniano, Carlos A., Lanfranchini, Mabel E., Recio, Clemente, de Barrio, RaĆŗl E., Sato, Ana MarĆa, Basei, Miguel A.S., Pimentel, Marcio M., Etcheverry, Ricardo O., Tassinari, Colombo C.G. (2017) Geology and petrogenetic considerations of the Loma Marcelo skarn, Neoproterozoic basement of the Ventania System, Argentina. Precambrian Research, 302. 358-380 doi:10.1016/j.precamres.2017.09.021 | Journal (article/letter/editorial) | | granites (ca. 607ā581 Ma) crop out in the Cerro Pan de AzĆŗcar-Cerro del Corral area and host the Loma Marcelo...zircons of the skarn as well as a Rb-Sr quartz-sericite isochron age of 364.4 Ā± 3.6 Ma obtained from a...Aires Province 1 Introduction The Ventania System, or Sierras Australes of Buenos Aires Province, is...1a) in the southeastern part of the Buenos Aires Province, Argentina (Fig. 1b). It constitutes part of the...System or Sierras Septentrionales of Buenos Aires Province (Fig. 1c). The Ventania System is mainly composed |  | | Journal (article/letter/editorial) | | Paragenesis of the Botija Porphyry Cu-Mo-(Au) Deposit, Panama Michael D. Seppā and John H. Dilles College of...of seven Cu-Mo-Au porphyry deposits in the Cobre Panama district, which currently has a global resource...seven porphyry deposits observed today at Cobre Panama were likely produced by normal faulting that dismembered...faulting and extension that deformed the Cobre Panama district shortly after ore formation at 29 to 28...Cobre Panama district (previously known as Petaquilla project) approximately 120 km west of Panama City |  | Baker, Michael J., Hollings, Peter, Thompson, Jennifer A., Thompson, Jay M., Burge, Colin (2016) Age and geochemistry of host rocks of the Cobre Panama porphyry CuāAu deposit, central Panama: Implications for the Paleogene evolution of the Panamanian magmatic arc. Lithos, 248. 40-54 doi:10.1016/j.lithos.2016.01.014 | Journal (article/letter/editorial) | | of host rocks of the Cobre Panama porphyry Cu-Au deposit, central Panama: Implications for the Paleogene...of host rocks of the Cobre Panama porphyry Cu-Au deposit, central Panama: Implications for the Paleogene...of host rocks of the Cobre Panama porphyry Cu-Au deposit, central Panama: Implications for the Paleogene...The Cobre Panama porphyry Cu-Au deposit, located in the Petaquilla district of central Panama, is hosted...granodiorite porphyry stocks and dikes at Cobre Panama indicate that the batholith was emplaced as a multi-phase |  | | Journal (article/letter/editorial) | | the central part of the Bolivian tin belt. The sericite from vein selvedges and an altered host rock provides...times. Keywords: K-Ar, age, alunite, jarosite, sericite, sulfur isotope, Oruro, Bolivia mineralization...altered porphyry NG6 sericite 24.8 Ā± 0.44 San Pablo stock altered porphyry NG27 sericite 20.2 Ā± 0.35 quartz-latite...formerly known as Catavi, the largest tin-producing mine in Bolivia, numerous veins have developed in the...yield more than 20 g of pure material. Sericite, the term sericite is used here as refer to clay-sized dioctahedral |  | Bissig, Thomas, Lee, James K. W., Clark, Alan H., Heather, Kevin B. (2001) The Cenozoic History of Volcanism and Hydrothermal Alteration in the Central Andean Flat-Slab Region: New 40Ar-39Ar Constraints from the El IndioāPascua Au (-Ag, Cu) Belt, 29Ā°20ā²ā30Ā°30ā² S. International Geology Review, 43 (4) 312-340 doi:10.1080/00206810109465016 | Journal (article/letter/editorial) | | hypabyssal intrusions; (4) the 14-17 Ma, andesitic, Cerro de las T6rtolas Formation and its intrusive lithodeme...Formation; and (8) the recently defined rhyolitic 2 Ma Cerro de Vidrio Formation. Magmatic activity decreased...decreased markedly following the eruption of the Cerro de las T6rtolas Formation. Hydrothermal activity occurred...from carefully documented outcrops or underground mine exposures on the Chilean and Argentinian flanks...29Ā° and 30Ā°30' S, north and south of the El Indio mine. Additional ore bodies, all of epithermal type, |  | | Journal (article/letter/editorial) | | oxide minerals. Quartz is the prevalentgangueand sericite--an alteration product. Spectorgraphicanalysesindicatethe........... General Electric Mine I (Grand Lode) ...... General Electric Mine II (ImmenseLode I).. References...car, and lies sevenmiles off the road from the Cerro 879 879 879 879 on U.S. Highway89 betweenTucsonand...879 879 Guijas Mountainsof the Basin and Range province. 879 The mountainsare moderatelydissected,eight...Tucson (Fig. 1). The district 878 General Electric Mine III .................. General Electric IV .... |  | | Journal (article/letter/editorial) | | supergene alunitefromthe Eseondida porphyry copper province. Indeed,perhaps onlytwoof thesemajordepositsdeposit(Fig...0361-0128/96/1809/164-1655.00 164 CHILEAN Cu PROVINCE: OXIDATION & ENRICHMENT in controlling anyagedifferences...)ARGENTINA ) 43.31 23 SanMiguel de Tucumā¢n (CERRO CAMPANA)I:::ā¢C. AN CAN) 24-20 14.5 "P -6614 .{-...TheLongitudinal Valleylacks bed- CHILEAN Cu PROVINCE: OXIDATION & ENRICHMENT 167 Saric,1975)andthelatter... 2oo I i I Krn 'ā¢(,ABOLIVIA 'CERRO /ā¢0 IquiquE , COLORADO ā¢ 20Ćø- 34-30 -- COLLAHUASI ā¢(UJā¢ |  | | Journal (article/letter/editorial) | | quartz and alkali feldspar in fresh rhyolites vs. sericite, paragonite, and chlorite in hydrothermally altered...chloritite matrix. This gives way laterally to zones of sericite and quartz, and occasionally carbonates. Hanging...form of chemical sediments, with abundant jasper, sericite, and pyrite. Sulfide deposition occurred at or...vary from camp to camp, and sometimes even from mine to mine (Strauss e t a l . , 1977). Geology of Rio Tinto...large gossans (collectively referred to as Cerro Colorado). Recent mining activity has focused on recovering |  | | 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...documented by 1960, 1969). aligned clastic mica, sericite beards around quartz clasts, and also broken and...cleavage). E - SW dipping second shear zone in the Cerro Colorado granite with S/C-fabrics ($2s, $2c) and overall |  | Leistel, J. M., Marcoux, E., ThiĆ©blemont, D., Quesada, C., SĆ”nchez, A., AlmodĆ³var, G. R., Pascual, E., SĆ”ez, R. (1997) The volcanic-hosted massive sulphide deposits of the Iberian Pyrite Belt. Mineralium Deposita, 33 (1) 2-30 doi:10.1007/s001260050130 | Journal (article/letter/editorial) | | mines closing over the last two decades. Only Ā®ve mine sites are still active in the belt today. Four of...Read Belt-Tasmania (Cambrian) Canada (Superior Province Ā± Archean) Abitibi (Archean) Rouyn-Noranda+Val...from the FiloĆn Sur gossan by Caledonia). The only mine in Portugal is Neves-Corvo which is being worked...revised geological interpretations not only of this province, but of the entire Western Hercynides. The few...dealing with the mineralization of the Iberian province include that of Pinedo Vara (1963), who made an |  | | Report (volume) | | C.-ā¢ā¢...ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢.ā¢.ā¢ā¢...ā¢ā¢ā¢ Geologic maps of mine workings, Walker 2 and Walker 3 veins, Vance County...ā¢ā¢ā¢ā¢ā¢ā¢.ā¢..ā¢ A, Fold in chromite ore on the Cerro - Colorado claim; B, .Drag fold in chromite ore on the...in planar banded chromite ore from the Fairview mine .....ā¢.....ā¢..ā¢...... Ā·-Ā· ...ā¢ā¢....... A and B,...ā¢ā¢.....ā¢.ā¢.ā¢.ā¢ā¢..ā¢.ā¢ā¢. Geologic map of the Ladd mine, Siskiyou County, Calif ā¢ā¢.ā¢ā¢ā¢.ā¢.ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢ā¢.ā¢ā¢ā¢ā¢ā¢...ā¢ā¢ā¢ā¢.ā¢. Geologic map of the main workings, Fairview mine, Siskiyou County, Calif ā¢ā¢ Geologic map of the McGuffy |  | Izaguirre, Aldo, Iriondo, Alexander, Kunk, Michael J., McAleer, Ryan J., Atkinson, William W., MartĆnez-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 GeodinĆ”mica, Universidad del PaĆs 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 104ā61 |  | | Journal (article/letter/editorial) | | metasomati.c replacement. Throughthe courtesyof the mine officials,particularlythoseof the Rio Tinto, Tharsis...DISTRICT, SPAIN. 571 tends eighty miles across the province of Huelva and into Portugal. We of the Congresssaw...alteredto liglā¢t coloredrocks,consistingessentiallyof sericite,or sericiteand kaolin. The igneousrocksaroundthe...7 Ibid., pp. 363-367. $" Igneous Rocks of the Province of Huelva and Genesis of the Pyritic Orebodies...it alsoexposed theoredeposits. Cerr0 Coloradoand Cerro Salomonrise as monadnocks abovethis peneplain level |  | | Journal (article/letter/editorial) | | not exceeding 10 km2 in outcrop, except Cerro Colorado and Cerro Ceucis, both of which are multiintrusive...of rocks mostly from one intrusive complex (Cerro Colorado). Within the calc-alkaline group, textures...assemblages similar to gabbros (Cerro Colorado) to Ā®negrained phyric textures (Cerro Saucoror) similar to those...diorites or granodiorites. The syenites from Cerro Colorado and Pabellon del Inca are characterized by...study) and ages of 65, 56, and 39 Ma for the Cerro Colorado, Cerro Ceucis, and the El Abra intrusions, respectively |  | | Journal (article/letter/editorial) | | setting of the major epithermal centers of this province isolates one major component of the mineralization...dacitic pyroclastics Oligocene to Middle Miocene Cerro de las TĆ³rtolas Formation: predominantly andesitic...a nca io ar lin o Ap PdlD o Upper Pliocene Cerro de Vidrio: rhyolite dome Despoblados RA RĆ Simplified... PD widely reactivated Azu frera s Tambo Cerro de las TĆ³rtolas 6380 m RĆ o 70Ā° W alo M Va lle...International border Chile-Argentina Cordill Cerro DoƱa Ana 5690 m era Co langĆ¼ il Reverse faults |  | | Journal (article/letter/editorial) | | Porphyry copper deposits account for 60% of the world's mine production of copper and constitute 80% of ore reserves...Sutherland Sutherland Sutherland Sutherland Panama 7. Cerro Colarado X Kesleretal. (1977), Linn et al... La Granja SA 39. 40. Rosa 41. 42. Antamina Cerro Verde-Santa References Langlois (1978) 4 Titley...Quellaveco 44. Michiquillay X X X Chile 45. Cerro Blanco 46. Chuquicamata SAI X SAI S X 48. El...number of deposits. Sericitic: Feldspar altered to sericite kaolinite. Ā± Advanced argillic: Feldspar altered |  | | Report (volume) | | vein deposits located in the Cordillera Oriental, Cerro Rico de Potosi being the best example. After hundreds...technical assistance to private mine operators about mineral exploration, mine development and operation,...trained to provide technical assistance to private mine operators, as well as to conduct reconnaissance...personnel were to supply guidance to small private mine operators on management and bookkeeping, service...1959, when the program ceased to grant loans to mine operators, the small staff consisted of one geologist |  | | 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...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...the latest Cretaceous to Paleocene (Laramide) province of southwestern North America, middle Eocene to |
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