 | | Journal (article/letter/editorial) | | Cu-AuandAu-AgMineralization in the PotrerillosDistrict, Chile TIMOTHYM. MARSH, • AMT (USA), Inc., 7400 North Oracle...alunite(36.23+ 0.08 Ma) associated with diaspore, pyrophyllite, dickitc,and zunyitedemonstrates that advanced... 4øARfløAR GEOCHRONOLOGYOF CUAU& AUAGDEPOSITS,POTRERILLOS,CHILE 785 hypotheses: (1) the Cobreporphyry copperdeposit...igneous andhydrothermal minerals relatedto / .?-Potrerillos District copperand goldmineralization in sevendistinctintrusive...Location mapof thePotrerillos districtin northern Chile,show- hydrothermally alteredareasin thePotrerillos |  | | Journal (article/letter/editorial) | | Processes in the El Indio-Pascua Au-Ag-Cu Belt, Chile and Argentina THOMAS BISSIG,* ALAN H. CLARK,† JAMES...the enormous erosion surfaces of the Atacama desert of northern Chile and southern Peru, are considered...on supergene processes in the Andes of northern Chile and southern Peru has long been recognized (e.g...Indio-Pascua gold-silver-copper belt which straddles the Chile-Argentina frontier along the tectonic and physiographic...formed the geochronologic 971 972 BISSIG ET AL. Chile Antofagasta PE R U -C Puna Tucumán La Coipa |  | | 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...thetimingof oxida1935;Bandy,1938;Jarrell,1944) and Potrerillos(March, tion at severalgolddeposits, includingbreeeia-hosted...Salvador(Gustafsonand Hunt, 1975) in northern Chile Chile,duringthe late Oligocene to earlyMioceneinterval...0361-0128/96/1809/164-1655.00 164 CHILEAN Cu PROVINCE: OXIDATION & ENRICHMENT in controlling anyagedifferences |  | | Journal (article/letter/editorial) | | Vol. 86, 1991, pp. 1187-1205 Gold Metallogeny of Chile RICHARD an Introduction H. SILLITOE 27 WestHill...poorlymineralized. Paucityof golddepositsin the coastalzoneof Chile, concentration of highsulfidationand porphyry-typedepositsin...copper and silver enrichmentin northernand central Chile which took place during the Oligoceneand early Mioceneand...CHILEhasbeena modestgoldproducerfor the last central Chile (24o-37 ø S; Flores, 1942; Ruiz et al., fivecenturies...by-product of coppermining.The 18 principal tral Chile, commonlyat altitudescloseto or greater depositsincludedin |  | 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) | | Mineralization in the Indio Muerto District, El Salvador, Chile LEWIS B. GUSTAFSON,† 5320 Cross Creek Lane, Reno...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...pyrite-bornite-chalcopyrite with sericite-andalusite-pyrophyllite-diaspore. Extending the trend to the southwest...then comprised the ore reserve for the El Salvador mine. Only minor mention was made of the separate small |  | | Journal (article/letter/editorial) | | 1975 The PorphyryCopperDepositat E1 Salvador,Chile LEWIS B. GUSTAFSON AND JOHN P. HUNT Abstract The...No. 5 The PorphyryCopperDepositat E1 Salvador,Chile Fig. 1. Aerial view of Cerro Indio Muerto, lookingwest...argillicalteration assemblages containing a'bundant pyrophyllite, diaspore, alunite, amorphorous material, andlocalcorundum...a THE PORPHYRY COPPER DEPOSIT AT EL SALVADOR, CHILE 859 goethiticcapping. A thin hematite-goethitc...Potrerillosmine and metallurgicalplant. Then mine superintendent Greninger, and mine geologists March, Reed, Watson |  | 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) | | (S. M.), see QAISER(M. A.), 735. Alaer6n mine, Copiap6, Chile, arsenolamprite, 732. Ala di Stura, Piemonte...distinction from montebrasite, 4r4. Amblygonite mine, Caceres, Spain, montebrasite, 414. Amelia County... d2o T, 489. Arsenolamprite, Chile, anal., X-ray, 732. Arthurite, Chile, 519; Cornwall, anal., 52o. Asahine...from Mull and Morvern, 934. Bala Durga Gourishankar mine, Tummalatalupur, Nellore, India, microcline perthite...Crystallization of anorthite, 78o. Bhavani Sankar mine, Tummalatalupur, Nellore, lndia, muscovite, I4O |  | 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 |  | 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 Indio–Pascua Au (-Ag, Cu) Belt, 29°20′–30°30′ S. International Geology Review, 43 (4) 312-340 doi:10.1080/00206810109465016 | Journal (article/letter/editorial) | | Canada b Barrick Chile Ltda. , Barrio Industrial Late 58, Alto Penuelas, Coquimbo, Chile Published online:...HEATHER Barrick Chile Ltda., Barrio Industrial Late 58, Alto Peñuelas, Coquimbo, Chile Abstract Ninety-three...from carefully documented outcrops or underground mine exposures on the Chilean and Argentinian flanks...29° and 30°30' S, north and south of the El Indio mine. Additional ore bodies, all of epithermal type,...information is largely from Martin et al. (1995) for Chile; no comprehensive regional map at an appropriate |  | 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) | | Intrusions at the El Salvador Porphyry Copper Deposit, Chile, Based on Trace Element Composition and U/Pb Age...porphyry Cu (MoAu) ores in the El Salvador district, Chile. Zircons (n = 240) from 15 Eocene age diorite, granodiorite...1995) and the El Abra-Fortuna granodiorite complex, Chile (1–2 m.y., Dilles et al., 1997; Campbell et al....Chuquicamata, Chile (2–3 m.y., Reynolds et al., 1998; Ballard et al., 2001), the Potrerillos district, Chile (8...Indio Muerto (El Salvador) district of northern Chile is characterized by a series of late Eocene porphyry |  | | Journal (article/letter/editorial) | | HYPOGENE ALUNITE FROM THE EL SALVADOR DISTRICT, CHILE, INDICATES POTENTIAL FOR A BLIND PORPHYRY COPPER...from the El Salvador porphyry copper district of Chile were recently dated. One alunite sample over the...deposits in the remote El Salvador district of Chile began with Old Camp in 1951 and the much larger...Formation) Fault El Salvador (42) Reverse fault Potrerillos (36) Copiapo Turquoise Gulch Strike-slip fault...Fig. 1. Lithology of the El Salvador district, Chile (Cornejo and Mpodozis, 1998) and locations mentioned |  | | Journal (article/letter/editorial) | | two representative porphyry systems (El Salvador, Chile, and Grasberg, Indonesia) was examined to evaluate...of the Cu in the El Salvador deposit in northern Chile (Gustafson & Hunt, 1975). Because Cu sulfides (chalcopyrite...hypogene Cu grade map of the El Salvador district, Chile, simplified from Gustafson et al. (2001). characterized...with a number of metal-free sericite and/or pyrophyllite deposits (Kitagawa et al., 1988; Sudo & Murao...external illite/smectite mixed-layer clay zone. Pyrophyllite occurs in the shallow parts of the alteration |  | | Journal (article/letter/editorial) | | central Chile; A.J. Wilson, writ. commun., 2009) and Mo (2.5 Mt: El Teniente, central Chile; Camus, 2003)...River dist.(Nena) Wafi-Golpu Gaby El Salvador Potrerillos Marte & Caspiche Taca Taca Bajo Bajo de la Alumbrera...to global-scale anomalies for Cu (e.g., northern Chile-southern Peru, southwestern North America) or Au...Escondida C HI B AR C A 26° El Salvador Potrerillos COPIAPÓ ARGENTINA LA SERENA 30° Lineament...belt and an intra-arc fault zone: the northern Chile part of the central Andean middle Eocene to early |  | | Journal (article/letter/editorial) | | 1995a; Hedenquist et al., 1998) and Cobre Potrerillos, Chile (Marsh et al., 1998). In these and other...as well. Alteration at depth comprises quartz-pyrophyllite-diaspore-illite with minor kaolinite and alunite...about 500 k.y. (Fig. 4). Like the welldated Potrerillos and Lepanto-Far Southeast systems (Marsh et al...Cu-Au and Au-Ag mineralization in the Potrerillos district, Chile: ECONOMIC GEOLOGY, v. 92, p. 784–806 |  | | Report (issue) | | Mountain (British Columbia, Canada) and El Teniente (Chile) porphyry copper deposits.........................deposits include El Teniente and El Salvador in Chile, Bajo de la Alumbrera in Argentina, Grasberg in...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...Berger and others, 2003). Alunite, kaolinite, pyrophyllite, and muscovite were mapped at the Red Mountain |  | | Journal (article/letter/editorial) | | Porphyry Gold-Copper Deposit, Maricunga Belt, Northern Chile* RICHARD H. SILLITOE,1,† JUSTIN TOLMAN,2,** AND...the Maricunga gold-silver-copper belt of northern Chile, was discovered in 2007 beneath postmineral cover...28°S in the high volcanic Andes of the Atacama Region, northern Chile (Fig. 1). The belt, some 200 km long...-70° SILLITOE ET AL. Potrerillos Bolivia -26°30’ ESPERANZA Argentina Chile Antofagasta LA COIPA...gold and silver conducted by Minera Anglo American Chile Ltda. and joint-venture partners. However, it was |  | | Journal (article/letter/editorial) | | in others (e. g., Ely, Nevada and El Salvador, Chile) they are only incipient or even barren. Irrespective...8–16 km south of the world famous Cerro de Pasco mine (Fig. 1). It contains one of the largest concentrations...quartz–alunite– dickite–kaolinite± (zunyite, pyrophyllite, illite) occur within or immediately surrounding...of pyrite–enargite– quartz–alunite and minor pyrophyllite (Fig. 2). The sulfide-rich ores extend continuously...(1994) Environmental geology of the Summitville mine, Colorado. Econ Geol 89:2006–2014 Guilbert JM, Park |  | 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) | | Ligarda 2004). The historical Zn–Pb–(Ag) Colquijirca mine is located further to the north and has been an...intergrown with enargite plus minor amounts of pyrophyllite and pyrite, Smelter Cordilleran ore (sample...accompanied by quartz (Fig. 3), though in some cases, pyrophyllite, diaspore, and zunyite are locally important...Mineralization in the Indio Muerto District, El Salvador, Chile. Econ Geol 96:325–350 Heather K, Leach T, Clark...Staff of the Compañía Minera El Indio, Barrick Chile Ltda (2003) Geology of the El Indio Au– Cu–Ag deposit: |  | | Journal (article/letter/editorial) | | Surface over the El Salvador Porphyry Copper Deposit, Chile YASUSHI WATANABE† Institute for Geo-Resources and...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...48 samples of silicate minerals (muscovite, pyrophyllite, dickite, and supergene kaolinite), and 20 samples |  | | Catalog/List | | ATACA~TE . 7 !TIll ~na la Farol a , Copi apo , Chile . Lustrous deep green rosettes of crystals to in...1t-x 1 " , £1, . 75p ~9 . CHALC EDONY . North Pool Mine , I l logan , Cornwoll . Tra ns lucent c r eu my...£14. 00 37. CYANOTRICHITE . Fa. na Vi eja , Potrerillos , Ch il e . Sky- blue velv ety crl,lsts of acicular...brownish rrosses in ITDtrix with minor orruunts of pyrophyllite. SpecimDns ~riced ncco r ding to richness. Specirren |  | | Book | | Potteriics, Chile . 4 ¢ Section Through Arequipa, Peru 5 ¢ Section Through Potrerillos, Chile . ; 6...6 ¢ Potash Index of Igneous Rocks, Atacama Rego Chile : 7 ¢ Michiquillay Regional Geology (Peru) . 8...8 © Structure at Chuquicamata, Chile . 9 ¢ Surface Geologic Map, Michiquillay 10 © Surface Geologic Map...Plutonic Belt, ies 27 @ Geology of the Kobuk-Koyukuk Province (Alaska). 28 © Interior Belt (Alaska). 3 ; ,...30 REFERENCES AND BIBEIOGRAPHY*,.22 fete 31 province has been described by Hollister (1974) to include |  | 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...sulfide veins are associated with pyrophyllite-alunite-quartz altered rocks. The Rosario massive sulfide...that make up the Collahuasi district in northern Chile occurs within an inlier of Paleozoic basement bounded |  | Perello, J., Carlotto, V., Zarate, A., Ramos, P., Posso, H., Neyra, C., Caballero, A., Fuster, N., Muhr, R. (2003) Porphyry-Style Alteration and Mineralization of the Middle Eocene to Early Oligocene Andahuaylas-Yauri Belt, Cuzco Region, Peru. Economic Geology, 98 (8) 1575-1605 doi:10.2113/gsecongeo.98.8.1575 | Journal (article/letter/editorial) | | Minerals S.A. Ahumada 11, Oficina 602, Santiago, Chile VÍCTOR CARLOTTO, Departamento de Geología, Universidad...Minerals S.A. Ahumada 11, Oficina 602, Santiago, Chile Abstract Originally known for its Fe-Cu skarn mineralization...rapidly emerging as an important porphyry copper province. Field work by the authors confirms that mineralization...early Oligocene porphyry copper belt of northern Chile and that the process of subduction flattening in...southern Peru also may have taken place in northern Chile between ~45 and 35 Ma. Introduction THE ANDAHUAYLAS-YAURI |  | | Journal (article/letter/editorial) | | K-feldspar and quartz ramify much of the porphyry in the mine. Under crossed nieols these veinlets show a saceharoidal...also been found at Chuquieamata (Perry, 1952), Potrerillos, Climax (Vanderwilt and King, 1955), Bingham...silver, and K-mica decomposing to kaolinite or pyrophyllite. 6KA1SiaO s ~- 4 H + = K2AI~(A1SiaO10)2 (OH)4...oquillbrium curves for K-mica-kaolinite and K-mica-pyrophyllite-boehmito. D e t e r m i n a t i o n of t h e |
|
