 | | Journal (article/letter/editorial) | | Graduate School of International Resource Sciences, Mining Museum of Akita University, Akita, Japan Abstract...mineralization in two representative porphyry systems (El Salvador, Chile, and Grasberg, Indonesia) was examined to...and host rocks during potassic alteration at El Salvador and Grasberg includes (i) reduction of SO42−...exsolution from the intrusive magmas. Keywords: El Salvador, Grasberg, Japan, porphyry Cu deposit, potassic...International Resource Sciences, Akita University, Mining Musium of Akita University, Osawa, Tegata, Akita |  | | Journal (article/letter/editorial) | | AucusT, 1975 The PorphyryCopperDepositat E1 Salvador,Chile LEWIS B. GUSTAFSON AND JOHN P. HUNT Abstract...copper deposit at E1 Salvador culminated volcanic activity in the Indio Muerto district. Host rocks for the...porphyry series. However, rhyolitic volcanismin the district was clearly more felsic than younger granodioritic...rutile857 No. 5 The PorphyryCopperDepositat E1 Salvador,Chile Fig. 1. Aerial view of Cerro Indio Muerto... Volcanic peaks of the high Cordillera,the Salar de Pedernales,and low hills underlain by folded Mesozoicsedimentsand |  | | Journal (article/letter/editorial) | | EXPRESS LETTER HYPOGENE ALUNITE FROM THE EL SALVADOR DISTRICT, CHILE, INDICATES POTENTIAL FOR A BLIND PORPHYRY...late breccia bodies from the El Salvador porphyry copper district of Chile were recently dated. One alunite...44 to 43 Ma. Porphyry copper ores in the El Salvador district formed at about the same time as porphyry...associated with ~80% of the known copper ore of the district; they record waning stages of magmatism at 42...porphyry copper deposits in the remote El Salvador district of Chile began with Old Camp in 1951 and the |  | | Journal (article/letter/editorial) | | Zonation at the Surface over the El Salvador Porphyry Copper Deposit, Chile YASUSHI WATANABE† Institute for...alteration minerals exposed at the surface of the El Salvador porphyry copper deposit. A total of 276 samples...propylitic assemblage (chlorite-calcite-epidote). Pyrophyllite occurs as a retrograde overprint of muscovite...muscovite zone, from 500 to 1,500 m wide. The pyrophyllite overprint overlaps the contact of the muscovite-andalusite...phosphate-sulfate minerals)diaspore-zunyite-pyrophyllite-dickite, with residual muscovite. In one case |  | | Report (issue) | | Copper Mountain (British Columbia, Canada) and El Teniente (Chile) porphyry copper deposits..................porphyry copper deposits include El Teniente and El Salvador in Chile, Bajo de la Alumbrera in Argentina, Grasberg...which will vary with the price of copper and local mining costs. At Dos Pobres, Arizona, from the top of...regional faults such as near deposits in northern Chile (Behn and others, 2001; Gow and Walshe, 2005), central...absorption features at 2.17 and 2.20 μm, and pyrophyllite has a narrow, intense absorption feature at |  | | Journal (article/letter/editorial) | | Escondida Porphyry Copper Deposit, Antofagasta Region, Chile RUBEN A. PADILLA GARZA,† BHP Minerals and Department...Minera Escondida Limitada, avenida de la minera 501, Antofagasta, Chile Abstract The Escondida porphyry...porphyry copper deposit, located in northern Chile, was one of the two largest copper producers of the world...the basement of the Precordillera de Domeyko province in northern Chile. We propose that the intrusive stock...acid-sulfate mineral association that includes pyrophyllite, alunite, and quartz as alteration minerals |  | Gustafson, L. B., Orquera, W., McWilliams, M., Castro, M., Olivares, O., Rojas, G., Maluenda, J., Mendez, M. (2001) Multiple Centers of Mineralization in the Indio Muerto District, El Salvador, Chile. Economic Geology, 96 (2) 325-350 doi:10.2113/gsecongeo.96.2.325 | Journal (article/letter/editorial) | | of Mineralization in the Indio Muerto District, El Salvador, Chile LEWIS B. GUSTAFSON,† 5320 Cross Creek...89511 WALTER ORQUERA, CODELCO-Chile, Division Salvador, El Salvador, Chile MICHAEL MCWILLIAMS, Department...AND MARCELLO MENDEZ CODELCO-Chile, Division Salvador, El Salvador, Chile Abstract The porphyries that...that formed copper deposits in the Indio Muerto district include both 44 Ma rhyolitic subvolcanic intrusions...intruding host andesite at the northeast end of the district. Very weak Cu but much stronger Mo mineralization |  | Ossandon C., G., Freraut C., R., Gustafson, L. B., Lindsay, D. D., Zentilli, M. (2001) Geology of the Chuquicamata Mine: A Progress Report. Economic Geology, 96 (2) 249-270 doi:10.2113/gsecongeo.96.2.249 | Journal (article/letter/editorial) | | of the Chuquicamata Mine: A Progress Report GUILLERMO OSSANDÓN C., CODELCO-Chile, Gerencia Exploraciones...Santiago, Chile ROBERTO FRÉRAUT C., CODELCO-Chile, Superintendencia Geología, Chuquicamata, Chile LEWIS... DARRYL D. LINDSAY, SRK Consultores, Santiago, Chile AND MARCOS ZENTILLI Department of Earth Sciences...Canada B3H 3J5 Abstract Chuquicamata, in northern Chile, is the world’s greatest copper orebody. It was...and locally alunite but only local traces of pyrophyllite and dickite. Some northwest enargite veins were |  | | Journal (article/letter/editorial) | | ideal case, to assist in the planning of selective mining. Introduction T H E ECONOMIC GEOLOGY of polluting...processes operate. Environmental standards for the mining and smelting industries, however, are being improved...Porphyry copper deposits account for 60% of the world's mine production of copper and constitute 80% of ore reserves...X X Chile 45. Cerro Blanco 46. Chuquicamata SAI X SAI S X 48. El Salvador SA SA 49. El Teniente...(Samame Boggio, 1980), Tintaya (Samame Boggio, 1980) Chile: Andacollo (Llaumett P. et al., 1975), 2 Los Pelambres |  | | Journal (article/letter/editorial) | | Colorado Porphyry Copper Deposit, I Región, Northern Chile FARHAD BOUZARI† AND ALAN H. CLARK Department of...the initiation of the Incaic orogeny in northern Chile. An age of 35.26 ± 0.68 (2σ) Ma for alunite associated...Evidence from Cerro Colorado and elsewhere in northern Chile (e.g., Spence and Angelina) confirms that Paleocene...emplaced along the Domeyko fault system (e.g., El Salvador) may similarly have been upgraded during the...Cenozoic supergene metallogenic epoch in northern Chile, ca. 20 or even 30 m.y. in duration, which attained |  | 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...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 |  | Sillitoe, Richard H., Devine, Fionnuala A.M., Sanguinetti, Martin I., Friedman, Richard M. (2019) Geology of the Josemaría Porphyry Copper-Gold Deposit, Argentina: Formation, Exhumation, and Burial in Two Million Years. Economic Geology, 114 (3) 407-426 doi:10.5382/econgeo.4645 | Journal (article/letter/editorial) | | located in the Frontal Cordillera of San Juan Province, Argentina, near the present-day northern limit...central Andes, and midway between the Maricunga and El Indio metallogenic belts. The deposit is centered...from shallow advanced argillic (mainly quartz-pyrophyllite) and underlying sericitic to deeper chlorite-sericite...low-arsenic, high-sulfidation assemblage in the quartz-pyrophyllite and sericitic zones. The outermost parts of...Cordillera of San Juan Province, Argentina, ~8 km east of the border with Chile (lat 28°26'S, long 69°32'W) |  | | Journal (article/letter/editorial) | | dredmetersof the 12 majorporphyrycopperdeposits in Chile was substantiated furtherby Alpersand Brimhall ...supergene alunitefromthe Eseondida porphyry copper province. Indeed,perhaps onlytwoof thesemajordepositsdeposit(Fig...elsewhere in northern E1 Salvador(Gustafsonand Hunt, 1975) in northern Chile Chile,duringthe late Oligocene...0361-0128/96/1809/164-1655.00 164 CHILEAN Cu PROVINCE: OXIDATION & ENRICHMENT in controlling anyagedifferences...ANGELINA 3' ½'*• I ß CHILE ?5 ø ,,,,)ARGENTINA ) 43.31 23 SanMiguel de Tucum•n (CERRO CAMPANA)I:::•C |  | | Journal (article/letter/editorial) | | in magmatic arc settings. At the regional and district scales, the occurrence of many deposits in belts...central Chile; A.J. Wilson, writ. commun., 2009) and Mo (2.5 Mt: El Teniente, central Chile; Camus, 2003)...Los BroncesRío Blanco El Teniente Mamut Grasberg-Ertsberg Ok Tedi Cerro de Pasco & Colquijirca Choquelimpie...Cerro Colorado Collahuasi dist. Bau Batu Hijau El Abra Cabang Kiri Chuquicamata dist. Koloula Frieda...Wafi-Golpu Gaby El Salvador Potrerillos Marte & Caspiche Taca Taca Bajo Bajo de la Alumbrera (Farallón |  | | Report (chapter) | | volcanism: a review R. H. Sillitoe Department of Mining Geology, Royal School of Mines, Imperial College...Manto-type copper deposits are best known from Chile and southern Peru. They consist o f stratiform concentrations...plugs and pyroclastic beds at Cerro de Mercado, Mexico, and El Laco, Chile. The map netite magma separated...and argillic alteration, with clays, alunite, pyrophyllite, diaspore, etc., accompanied by widespread silicification;...northwest it impinges on the Sonoran Basin and Range province and in the southeast, south of the Trans-Mexico |  | | Report (issue) | | Figure 5.--Hydrothermal alteration at the Brewer mine, 21 Chesterfield County, South Carolina Figure 6...tables Table 1.--Metals associated with selected pyrophyllite deposits— Table 2.--Rapid rock analysis of topaz—rich...from drill hole 8, 13.4 — 19.5 meters depth, Brewer mine area, South Carolina Table 2a.--Seimquantitative...analyses from U.S. Bureau of Mines drill holes, Brewer mine area, South Carolina Table 3.--Analyses of hard...hard rock with fresh pyrite from the Brewer mine area, South Carolina Table 4.--Analyses of 12 soil samples |  | Khashgerel, B.-E., Rye, R. O., Kavalieris, I., Hayashi, K.-i. (2009) The Sericitic to Advanced Argillic Transition: Stable Isotope and Mineralogical Characteristics from the Hugo Dummett Porphyry Cu-Au Deposit, Oyu Tolgoi District, Mongolia. Economic Geology, 104 (8) 1087-1110 doi:10.2113/gsecongeo.104.8.1087 | Journal (article/letter/editorial) | | Hugo Dummett Porphyry Cu-Au Deposit, Oyu Tolgoi District, Mongolia BAT-ERDENE KHASHGEREL,1,† ROBERT O....porphyry Cu-Au deposits within the Oyu Tolgoi mineral district, Mongolia, occur in a northnortheast–trending...topaz, pyrophyllite, kaolinite, anhydrite, gypsum, and dickite but is dominated by pyrophyllite. This...alteration. Mineralogical investigations show that pyrophyllite replaces fine-grained muscovite as coarse crystals...(δ18O = 6.7–10.4‰, δD = –116 to –92‰, n =13) and pyrophyllite (δ18O = 5.9–12.2‰, δD = –122 to –87‰, n = 28) |  | | Report (volume) | | -------5. Hydrothermal alteration at the Brewer mine, Chesterfield County, South Carolina ----------... 3. 4. 5. Metals associated with selected pyrophyllite deposits -------------Rapid rock analysis of...from drill hole 8, 13.4-19.5 meters depth, Brewer mine area, South Carolina --------------------------... of hard rock with fresh pyrite from the Brewer mine area, South Carolina --------------------------...samples from U.S. Bureau of Mines drill holes, Brewer mine area, South Carolina -------------------------- |  | | Journal (article/letter/editorial) | | SulfurIsotopes in thePorphyryCopperDeposit at E1Salvador,Chile C•:l•US W. FmL•) •N•) LEW•S B. GUST•FSON Abstract...representativeof mineralization in time and spaceat E1 Salvador. The hypogenesulfates(mean +10.75o; range +7...temperature,and chemical condidepositat E1 Salvador,Chile, by Gustarsonand tions at various stagesof...Many of the mineralsusedin this sulfur Muerto district. A variety of geologicarguments isotope, investigation...porphyry-type environments. Our interpretations of the E1 Salvador data have benefited enormouslyby the recent contributionsof |  | Escolme, Angela, Cooke, David R., Hunt, Julie, Berry, Ron F., Maas, Roland, Creaser, Robert A. (2020) The Productora Cu-Au-Mo Deposit, Chile: A Mesozoic Magmatic-Hydrothermal Breccia Complex with Both Porphyry and Iron Oxide Cu-Au Affinities. Economic Geology, 115 (3). 543-580 doi:10.5382/econgeo.4718 | Journal (article/letter/editorial) | | pp. 543–580 The Productora Cu-Au-Mo Deposit, Chile: A Mesozoic Magmatic-Hydrothermal Breccia Complex...Creaser4 1ARC Research Hub for Transforming the Mining Value Chain (TMVC) and Centre for Ore Deposit and...breccia complex in the Coastal Cordillera of northern Chile. The current resource, which includes the neighboring...quartz-altered rock above domains of alunite, pyrophyllite, and dickite. Rhenium-Os dating of molybdenite...seen throughout the Coastal Cordillera of northern Chile. Introduction Iron-oxide copper gold (IOCG) deposits |  | | Journal (article/letter/editorial) | | conAlterationassemblages comprisingseveralof alunite, pyrophyllite,kaolinite, dickite, and diaspore sideredhere...remnant withinthem.Lateveinletsof fine-grained Salvador, Chile (Gustarsonand Hunt, 1975), Red openspaces pyriteare...hedrite-tennantite,molybdenite, kaolinite, dickite, pyrophyllite, sericite,anhydrite,andbarite. lodeshostedby...Characteristics of Enargite-Bearing Massive SulfideDeposits District, country Age of Hydrothermal Fault Deposit(s)...mineralization at: (a) Recsk,Hungary(after Baksa,1975,and mine plans);(b) Bor, Yugoslavia (after Jankovi6et al |  | | Journal (article/letter/editorial) | | corundum-quartz-, and quartz-diaspore-topaz-APS minerals-pyrophyllite-sericite bearing assemblages occur in close...disequilibrium assemblage quartz+diaspore+topaz (± pyrophyllite sericite) formed between 285 and 320 C by...Episodic magmatic-hydrothermal activity in the district is characterized by several stages of advanced...the presence of various amounts of andalusite, pyrophyllite, kaolinite-dickite, corundum, diaspore, alunite...of advanced argillic lithocaps (e.g. quartz-pyrophyllite-diaspore-corundum-topaz-APS minerals) may overprint |  | Oyarzun, Roberto, Oyarzún, Jorge, Ménard, Jean Jacques, Lillo, Javier (2003) The Cretaceous iron belt of northern Chile: role of oceanic plates, a superplume event, and a major shear zone. Mineralium Deposita, 38 (5) 640-646 doi:10.1007/s00126-003-0359-y | Journal (article/letter/editorial) | | Javier Lillo The Cretaceous iron belt of northern Chile: role of oceanic plates, a superplume event, and...tectonic, magmatic, and metallogenic history of Chile. The geological evidence indicates that a major...This completely changed the tectonic setting of Chile ending the Early Cretaceous extensional period (aborted...best possible structural path in northern Chile, i.e., the Atacama Fault Zone, eventually forming a +500-km-long...geological history. Keywords Iron belt Æ Cretaceous Æ Chile Æ Shear zone Æ Superplume Editorial handling: Robert |  | Sahlström, Fredrik, Arribas, Antonio, Dirks, Paul, Corral, Isaac, Chang, Zhaoshan (2017) Mineralogical Distribution of Germanium, Gallium and Indium at the Mt Carlton High-Sulfidation Epithermal Deposit, NE Australia, and Comparison with Similar Deposits Worldwide. Minerals, 7 (11) 213 doi:10.3390/min7110213 | Journal (article/letter/editorial) | | Tsumeb in Namibia, Kipushi in D.R. Congo and the Apex Mine in Utah; e.g., [7]), syngenetic or early diagenetic...deposits. The northern Bowen Basin is a metallogenic province related to Permocarboniferous magmatism in NE...ill—illite; kln—kaolinite; mnt—montmorillonite; prl—pyrophyllite; py—pyrite; qtz—quartz; rt—rutile. hem—hematite;...ill—illite; kln—kaolinite; mnt—montmorillonite; prl—pyrophyllite; py—pyrite; Modified from Sahlström et al. [30]...Chelopech (Bulgaria), Cerro Quema (Panama) and El Salvador (Chile) (Table 2). 4.2. WDS Spot Analyses The major |  | 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...JOHN L. WALSHE, CSIRO Division of Exploration and Mining, PO Box 1130, Bentley, Western Australia 6102,...Compañia Minera Doña Inés de Collahuasi SCM, Pedro Lagos 1090, Iquique, Chile Abstract The Rosario and...associated with the Domeyko fault system in northern Chile. At Rosario, fault-hosted Cu-Ag–rich massive sulfide...sulfide veins are associated with pyrophyllite-alunite-quartz altered rocks. The Rosario massive sulfide |
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