 | | 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) | | 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...trace diaspore (including some areas rich in andalusite) and (2) muscovite with trace diaspore. There...alunite-(± aluminum phosphate-sulfate minerals)diaspore-zunyite-pyrophyllite-dickite, with residual muscovite...obtained from the samples with andalusite-muscovite-diaspore assemblage. This composition is close to that |  | | 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) | | (Sustainable Mining Research & Consult EIRL), Casilla 28, San Pedro de la Paz 4130000, Chile; E-Mail: bernhard...June 2014 / Published: 8 July 2014 Abstract: The mining industry is a fundamental industry involved in...to increases in the waste/metal production ratio. Mine wastes deposited on-land in so-called tailings dams...environmental issues that need to be addressed (e.g., acid mine drainage formation due to sulphide oxidation, geotechnical...and social concerns due to land use during mining. The mining industry recognizes these concerns and is |  | 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 |  | | 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...the date of a study, considering the extent of mining at that date. At Batu Hijau, Indonesia, Arif and |  | | 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 |  | | Report (issue) | | Figure 5.--Hydrothermal alteration at the Brewer mine, 21 Chesterfield County, South Carolina Figure 6...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...with abundant andalusite and topaz and traces of diaspore. These deposits are interpreted to be the result |  | | 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...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 (volume) | | -------5. Hydrothermal alteration at the Brewer mine, Chesterfield County, South Carolina ----------...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 --------------------------...with abundant andalusite and topaz and traces of diaspore. These deposits are interpreted to be the result |  | | Journal (article/letter/editorial) | | February 2014 Article Hydrothermal corundum, topaz, diaspore and alunite supergroup minerals in the advanced...corundum-sericite-feldspar-, corundum-quartz-, and quartz-diaspore-topaz-APS minerals-pyrophyllite-sericite bearing...hydrothermal fluid. The disequilibrium assemblage quartz+diaspore+topaz (± pyrophyllite sericite) formed between...present as pseudocubic crystals enclosed within diaspore and natroalunite. High level lithocaps include...Episodic magmatic-hydrothermal activity in the district is characterized by several stages of advanced |  | 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...by minerals that include andalusite, corundum, diaspore, residual quartz, alunite plus aluminum-phosphate-sulfate...deposits (Lowell and Guilbert, 1970), notably at El Salvador, Chile (Gustafson and Hunt, 1975), concluded that...studies—Lepanto-Far Southeast, Philippines; El Salvador and El Teniente, Chile; Panguna, PNG; Endeavour 26, Australia; |  | | Journal (article/letter/editorial) | | alunite, pyrophyllite,kaolinite, dickite, and diaspore sideredhere are lensliketo irregular bodiesin...remnant withinthem.Lateveinletsof fine-grained Salvador, Chile (Gustarsonand Hunt, 1975), Red openspaces pyriteare...lodeshostedby nonvolcanicrockshave, of course, diaspore, studies by thewriterrevealedpyroalso been exploitedfrom...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) | | 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 |  | | Journal (article/letter/editorial) | | Cerro Colorado Hypogene Protore, I Región, Northern Chile FARHAD BOUZARI,†,* AND ALAN H. CLARK Department...Cerro Colorado porphyry Cu (-Mo) deposit, I Región, Chile, exhibits features not commonly documented in such...(smectite), quartz-sericite-clay, and andalusite-diaspore-pyrophyllite assemblages. The deposit is apparently...undumortieritized tourmaline veinlets cutting andalusite-diaspore assemblages confirms that much of the advanced...exemplified by the hypogene protore of the El Salvador deposit, Chile, comprehensively documented by Gustafson |  | | Journal (article/letter/editorial) | | intrusive, including quartz, sericite, pyrophyllite, diaspore, aluminum-phosphates-sulfates (APS) and pyrite...lithocap composed of quartz, natroalunite, and minor diaspore and pyrophyllite. The APS minerals are Ca-Sr-Ba-Pb-rich...al. 1998), Maricunga, Chile (MUNTEAN & EINAUDI 2001), Nevados de Famatina, Chile (PUDACK et al. 2009)...dominated by quartz-dickite r pyrophyllite r diaspore, to sericitic (quartz-sericitepyrite) alteration...described in several porphyry systems, e.g. El Salvador, Chile (WATANABE & HEDENQUIST 2001), Hugo Dummett |  | | Journal (article/letter/editorial) | | Porphyry Gold Deposits of the Refugio District, Maricunga Belt, Northern Chile JOHN L. MUNTEAN†,* AND MARCO T...Abstract The porphyry gold deposits of the Refugio district and similar deposits in the Maricunga belt contain...the porphyry gold deposits of the Maricunga belt, Chile (Vila and Sillitoe, 1991). For this reason it is...prospects and deposits in the high Andes of northern Chile (Vila and Sillitoe, 1991; Fig. 1). Zones of hydrothermally...Quaternary alluvium and evaporites El Indio Belt (Miocene) Peru-Chile o Bajo de la Alumbrera (Late Miocene) |  | | Journal (article/letter/editorial) | | complete porphyry coppersystems. Examples from Chile, Argentina, and elsewhereare used to aid in the...al extensionsas great as 8 km. At Chuquicamata,Chile, a major high-anglefault may have cut the porphyry...porphyry systemis believedto be exposedat Los Loros, Chile. There a zone of molybdenum-rich and copper-poorpotassiumsilicate...erodedstratovolcanoes, as at Cerro Marquez in northern Chile. Such zones are interpreted as the columns of a...exemplifiedby the Los Pelambresdeposit(Fig. 2) in Chile (Sillitoe, 1973). Knowledgeof the characterand |  | 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...Cordillera of San Juan Province, Argentina, ~8 km east of the border with Chile (lat 28°26'S, long 69°32'W)...high-sulfidation epithermal deposits of the Maricunga and El Indio metallogenic belts and, along with nearby porphyry...Josemaría deposit was discovered in 2004 by Desarrollo de Prospectos Mineros S.A. (Deprominsa), the Argentinian |  | | Journal (article/letter/editorial) | | Porphyry-Epithermal Transition: Maricunga Belt, Northern Chile JOHN L. MUNTEAN†,* AND MARCO T. EINAUDI Department...Pepa districts in the Maricunga belt of northern Chile contain advanced argillic alteration zones that...we investigated the Maricunga belt of northern Chile, where numerous districts have zones of advanced...in northern Chile about 700 km north of Santiago (Figs. 1, 2), is a metallogenic province of Miocene age...and evaporites El Indio Belt (Miocene) Trench o 28 Copiapo Peru-Chile 30 Bajo de la Alumbrera (Late |  | | Journal (article/letter/editorial) | | ileLtda., AvenidaPedrode Valdivia295, Santiago,Chile AND RICHARD H. SILLITOE 27 WestHill Park,HighgateVillage...and 28 ø S in the Andean Cordillera of northern Chile. After 10 yearsof exploration,three preciousmetal...38-2353.00 1238 Au PORPHYRY,MARICUNGA BELT, CHILE 1239 and west of Marte which compriseadvancedargillic...central and northern Chile. The the Atacama desert. Maricungabelt in northern Chile is one of the most...ppm Au) associated with erodedandesiticstrathat of "El Indio belt" for the north-trending metal- tovolcanoes |  | Bendezú, Ronner, Page, Laurence, Spikings, Richard, Pecskay, Zoltan, Fontboté, Lluís (2008) New 40Ar/39Ar alunite ages from the Colquijirca district, Peru: evidence of a long period of magmatic SO2 degassing during formation of epithermal Au–Ag and Cordilleran polymetallic ores. Mineralium Deposita, 43 (7) 777-789 doi:10.1007/s00126-008-0195-1 | Journal (article/letter/editorial) | | New 40Ar/39Ar alunite ages from the Colquijirca district, Peru: evidence of a long period of magmatic SO2...alunite crystals from the large Miocene Colquijirca district in central Peru. Combined with previously published...Spikings : L. Fontboté Section des Sciences de la Terre, Université de Genève, Geneva, Switzerland e-mail: Ronner...Bendezu@terre.unige.ch R. Bendezú Sociedad Minera El Brocal S. A. A., Lima, Peru L. Page Department of...systems, including Chuquicamata, El Teniente, Butte, La Escondida, and Cerro de Pasco (Ossandón et al. 2001; |  | | Journal (article/letter/editorial) | | Geologic Evolution of the Escondida Area, Northern Chile: A Model for Spatial and Temporal Localization of...has been carried out over a 745-km2 area of the Atacama Desert surrounding the porphyry Cu deposits at...Zaldívar, and Chimborazo (Cordillera de Domeyko, northern Chile). The purpose of this study was to examine...magmatic setting of this preeminent porphyry Cu district for evidence of features or processes that might...throughout much of the porphyry belt of northern Chile. Geochemically, they are I-type in character, but |  | | Journal (article/letter/editorial) | | Cu-AuandAu-AgMineralization in the PotrerillosDistrict, Chile TIMOTHYM. MARSH, • AMT (USA), Inc., 7400 North Oracle...coarse-grained alunite(36.23+ 0.08 Ma) associated with diaspore, pyrophyllite, dickitc,and zunyitedemonstrates...ageatPotrerillos, a majorChilean porphyry copper district(Fig.l). Attentionhasbeendrawnrecentlyto this districtbecause...GEOCHRONOLOGYOF CUAU& AUAGDEPOSITS,POTRERILLOS,CHILE 785 hypotheses: (1) the Cobreporphyry copperdeposit...and(3)epithermal precious metalmineralization ! ß El Abra wasa productof highregional heatflow,enhanced |
|
