 | Bugueño, Felipe, Calle-Gardella, Daniela, Comte, Diana, Reyes-Wagner, Valentina, Ojeda, Marcia, Rietbrock, Andreas, Roecker, Steven (2022) Subsurface Insights of the Maricunga Gold Belt through Local Earthquake Tomography. Minerals, 12 (11) 1437 doi:10.3390/min12111437 | Journal (article/letter/editorial) | | Universidad de Chile, Santiago 8370451, Chile Advanced Mining Technology Center, Universidad de Chile, Santiago...8370451, Chile Departamento de Geofísica, Facultad Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago...Santiago 8370449, Chile Geophysical Institute, Department of Physics, Karlsruhe Institute of Technology...which is a metallogenic belt located east of Copiapó, Chile, with a length of 200 km and oriented in the...institutional affiliations. Mining production in Chile is the top economic activity in terms of gross national |  | | 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...lower half of the deposit accompanies quartz ± magnetite-veined, potassic-altered rocks, whereas the shallower...potassic-calcic zone defined by K-feldspar, actinolite, and magnetite, which formed at the expense of biotite. A relatively...28°S in the high volcanic Andes of the Atacama Region, northern Chile (Fig. 1). The belt, some 200 km long |  | 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...Triassic age. The earlier, more intensely quartz ± magnetite-veined porphyry phases and contiguous wall rocks...Cordillera of San Juan Province, Argentina, ~8 km east of the border with Chile (lat 28°26'S, long 69°32'W)...70° 68°W 69°40’ o PERU S BOLIVIA er u - Chile Tambo Alturas ch Los Azules El Altar - Piuquenes...os M og ote sf au lt Refugio CHILE belt A R G E N T I N A Lobo-Marte La Pepa Taguas Pascua-Lama |  | | Journal (article/letter/editorial) | | the Refugio District, Maricunga Belt, Northern Chile JOHN L. MUNTEAN†,* AND MARCO T. EINAUDI Department...banded quartz veinlets associated with chlorite-magnetite-albite and/or pyrite-albite-clay alteration to...rocks. A-veinlets range from hairline streaks of magnetite ± biotite with minor quartz and chalcopyrite,...to sugary quartz veinlets <1 cm in width with magnetite and chalcopyrite and no alteration envelopes....Potassic alteration consists of a central zone of magnetite-K feldspar-oligoclase that changes outward to |  | | 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...A-veinlets contain variable amounts of quartz, magnetite, biotite, and chalcopyrite and locally have K...vapor-rich fluid inclusions and micron-sized grains of magnetite, commonly occur as symmetric pairs near the vein...we investigated the Maricunga belt of northern Chile, where numerous districts have zones of advanced |  | | Journal (article/letter/editorial) | | mineralization in the Atacama segment of the South American Andes, northern Chile (26°15'-27°25'S) Received:...magmatism and the rich ore deposits of northern Chile have been the focus of numerous studies. Significant...feature of the geology of this part of northern Chile is the existence of n o r t h - south to north-east-...alteration and cama segment - Andes - northern Chile mineralization (Baker and Guilbert, 1987; Colley...metallogenic belts Introduction (Fig. 1): (1) along the Atacama Fault System; (2) along the Inca de Oro Belt; (3) |  | | 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...quartzstockworksandadvanced argilliccapsare telescopedat Marte, Valy, SantaCecilia, andLa Pepabut are separatedby...polymetallicveinswith quartz-alunite selvagesat Aldebaran. Marte andLobo are rich in gold(1.43 and 1.6 ppm) andpoorin...,andalongwith lead, are alsoweaklyanomalous at Marte in the underlying,shallow-levelquartz stockwork |  | | Journal (article/letter/editorial) | | Vol. 86, 1991, pp. 1187-1205 Gold Metallogeny of Chile RICHARD an Introduction H. SILLITOE 27 WestHill...s,includingnewly recognizedgold-onlyexamplesat Marte and Lobo, accompany quartzstockworks developedin...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 |  | | Journal (article/letter/editorial) | | east of the main Andean porphyry copper belt of Chile. The deposit consists of a composite stock of dacitic...mineralized or barren porphyries. Intense quartz-magnetite (±K feldspar) alteration pervades the first mineralized...alteration. The intensely quartz-magnetite veined sample of quartz-magnetite alteration indicates a total...and have a closely overlapping distribution on the mine scale. A well-developed ore shell coincides with...partly with the distribution of intense quartz ± magnetite veins, even though the bulk of the ore minerals |  | | Journal (article/letter/editorial) | | east of the main Andean porphyry copper belt of Chile. The deposit consists of a composite stock of dacitic...mineralized or barren porphyries. Intense quartz-magnetite (±K feldspar) alteration pervades the first mineralized...alteration. The intensely quartz-magnetite veined sample of quartz-magnetite alteration indicates a total...and have a closely overlapping distribution on the mine scale. A well-developed ore shell coincides with...partly with the distribution of intense quartz ± magnetite veins, even though the bulk of the ore minerals |  | | Journal (article/letter/editorial) | | Porphyry Gold Deposit at Marte, Northern Chile TOMkS VILA, Minera Anglo American Chile Ltda., Avenida Pedro...Pedro de Valdivia 295, Santiago,Chile RICHARD H. SILLITOE, 27 West Hill Park, Highgate Village, London N6...CopiapS,Chile AND ENRIQUEVITERI** Minera AngloAmericanChile Ltda., ChaKarcillo840, CopiapC,Chile Abstract...porphyrygolddeposithasbeendocumentedfor the firsttime at Marte in the Maricunga belt of the AndeanCordillera,northernChile...or introductionof muchof the veinlet quartz, magnetite,and gold. Chlorite-dominatedalteration affectedthe |  | | Journal (article/letter/editorial) | | of Northern Chile Preface FRANCISCO CAMUS † Codelco-Chile, Huérfanos 1270, Santiago, Chile AND JOHN H...University, Corvallis, Oregon 97331 Introduction Chile is known worldwide as the site of one of the largest...production of more than 50 Mt of fine copper. Currently, Chile annually produces about 4.6 Mt of fine copper that...exploration efforts in the Central Andes with emphasis in Chile. During the past 25 years, exploration expenditures...subject of research by numerous individuals in Chile and elsewhere. The support of mining companies has |  | | Report (issue) | | Enrique Viteri, The porphyry gold deposit at Marte, northern Chile, Economic Geology Monograph 8, in press...by geologists at La Pepa, Alderberan, Marte and Lobo Mines, Chile. REGIONAL GEOLOGIC ATTRIBUTES TECTONIC...Native gold and electrum in a quartz stockwork. Magnetite is commonly present. In sulfide ore; pyrite up...FLUID INCLUSIONS: No data GEOPHYSICAL SIGNATURES: Magnetite rich zones may be reflected by aeromagnetic anomaly...mineralization. EXAMPLES Marte, Chile 46,000,000 mt; 1.43 gpt Au, 549 ppm Lobo, Chile 90,000,000 mt; 1.50 |  | | Journal (issue) | | Ingenieria Chile Ltda. Nueva de Lyon 72 Oficina 1501 Providencia – Sanitago de Chile · Chile Tel.: +56-2/2442299...Córdova 5710, Oficina 404, Las Condes, Santiago, Chile. Tel: +562-351 7700 soportE opErativo • Diagnóstico...Lomas Bayas II. Imagen gentileza de Xstrata Copper Chile • Consejo Editorial: Ricardo Álvarez, José Botín...Noticias 65 Latinoamérica: eje de Expomin 2012 73 Chile y Australia firman acuerdo en minería MINERIA CHILENA...Canadá US$265; Europa y Resto del Mundo US$300. En Chile, la revista se distribuye en forma gratuita a profesionales |  | | Journal (article/letter/editorial) | | of mineral deposits. Sixteen mining districts in Chile, and 24 in Argentina, were attributed to the seismically...zones roughly parallel to the axis of the Peru-Chile trench (Carachas-Portillo, Choquelimpie, Iquique...Ulriksen (1990) for the northern and central part of Chile and from Mapa Minero (1966) for the northwestern...information was obtained from Mapa GeoloÂgico de Chile (1982) and Mapa GeoloÂgico de la RepuÂblica Argentina...sections) perpendicular to the axis of the Peru±Chile trench, which enabled us to distinguish between |  | | Journal (article/letter/editorial) | | Norrbotten ore province Æ Sweden Introduction Aitik is Sweden’s largest copper mine and one of Europe’s...had been produced since mining began in 1968. The mine has a remaining reserve of 226 Mt of ore with an...of Gällivare, in the northern Norrbotten ore province (Fig. 1). Several other epigenetic copper–gold...ore deposits occur in the region; the entire ore province produces about 90% of the total tonnage of ore...ore province and the Aitik Cu–Au deposit. A The location of the northern Norrbotten ore province in Scandinavia |  | | Journal (article/letter/editorial) | | BEARING ON THE ORIGIN OF THE EL LACO MAGNETITE DEPOSIT, NORTHERN CHILE RICHARD H. SILLITOE† 27 West Hill...Ontario L5K 1Z9, Canada Abstract The El Laco magnetite deposit has been interpreted as lava flows and...during the 1990s reveals that the massive magnetite contains magnetite-veined blocks and smaller fragments...growth of magnetite and pyroxene along the walls of chimney structures and veins within magnetite indicates...at El Laco, and broadly contemporaneous with magnetite formation, is recognized as part of a steam-heated |  | | Journal (article/letter/editorial) | | central Chile; A.J. Wilson, writ. commun., 2009) and Mo (2.5 Mt: El Teniente, central Chile; Camus, 2003)...(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...HI B AR C A 26° El Salvador Potrerillos COPIAPÓ ARGENTINA LA SERENA 30° Lineament Fault Porphyry...belt and an intra-arc fault zone: the northern Chile part of the central Andean middle Eocene to early |  | | 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...and Chimborazo (Cordillera de Domeyko, northern Chile). The purpose of this study was to examine the regional...throughout much of the porphyry belt of northern Chile. Geochemically, they are I-type in character, but...giant porphyry deposits. Introduction NORTHERN CHILE is the world’s premier porphyry copper district |  | Simón, Valeria, Arnosio, Marcelo, Trumbull, Robert B., Caffe, Pablo, Rocholl, Alexander, Sudo, Masafumi, Lucassen, Friedrich, Huidobro, Facundo (2021) Geology, geochemistry and geochronology of Lindero porphyry gold deposit in the Southern Puna plateau, Argentina. Journal of South American Earth Sciences, 105. 103047pp. doi:10.1016/j.jsames.2020.103047 | Journal (article/letter/editorial) | | recognized: (i) Ca-Na silicate (clinopyroxene + magnetite + K-feldspar + quartz + 37 calcite ± plagioclase)...plagioclase), (ii) K-silicate (K-feldspar + quartz + magnetite ± biotite ± anhydrite) and (iii) 38 chlorite-calcite...porphyry gold deposits in the 69 Maricunga belt, Chile, and with the porphyry copper deposits of Argentina...porphyry copper deposits in the frontal-arc setting of Chile, notably by the lack 71 of an adakite-like signature...uncommon. They were defined in the Maricunga belt of Chile in the early 79 1980s (Vila et al., 1991; Vila |  | | Journal (article/letter/editorial) | | Collahuasi, Chuquicamata, La Escondida, El Teniente, Chile) makes them valuable exploration targets. These...from Escondida, Zaldívar, and Chimborazo, northern Chile, and coeval regional diorite intrusions. Negative...magmas (up to two log fO units above the fayalite-magnetite-quartz 2 buffer; Brandon and Draper, 1996) ensures...example being the West Fissure zone of northern Chile, which hosts several of the world’s largest deposits...LA Ocean 22°S Lascar Antofagasta El 24°S Chile Pacific RO Zaldívar Chimborazo La Escondida |  | | Journal (article/letter/editorial) | | Geología de los Sistemas Porfíricos en los Andes de Chile. FRANCISCO CAMUS INFANTA. 2003. 267 Pp. Servicio... Santiago, Chile. Price CH$35,000/US$55. (Spanish only) Since he joined El Teniente mine in 1966, then...of Gondwanic porphyry copper systems along the Chile-Argentina Andes. The overview of the Andean cycle...deposits of southern Peru and northern and central Chile. The author does an excellent job of summarizing...gold systems of the Maricunga belt in northern Chile. Also, a number of pages are dedicated to reviewing |  | Gurbanov, A. G., Bogatikov, O. A., Dokuchaev, A. Ya., Gazeev, V. M., Abramov, S. S., Groznova, E. O., Shevchenko, A. V. (2008) Ore-bearing hydrothermal metasomatic processes in the Elbrus volcanic center, the northern Caucasus, Russia. Geology of Ore Deposits, 50 (3) 199-217 doi:10.1134/s1075701508030033 | Journal (article/letter/editorial) | | of the caldera cycle comprises occurrences of magnetite, ilmenite, pyrite and pyrrhotite (including Ni–Co...time. By analogy with porphyry Cu–Mo deposits in Chile and the United States, the ore mineralization of...that are mined in the Maricunga Belt in northern Chile are localized in early and late Miocene volcanic...assemblage. The ore-bearing quartz–specularite–magnetite stockwork is hosted in the altered rocks. An argillic...argillic cap commonly covers the subvolcanic bodies (Marte, La Pepa, Valle, and other gold deposits); at some |  | Koděra, Peter, Kozák, Jaroslav, Brčeková, Jana, Chovan, Martin, Lexa, Jaroslav, Jánošík, Michal, Biroň, Adrián, Uhlík, Peter, Bakos, František (2018) Distribution and composition of gold in porphyry gold systems: example from the Biely Vrch deposit, Slovakia. Mineralium Deposita, 53 (8) 1193-1212 doi:10.1007/s00126-018-0798-0 | Journal (article/letter/editorial) | | including the classical Maricunga belt in N Chile (e.g., Lobo, Marte, Maricunga (previously Refugio); Vila...characterized by a network of commonly banded quartz-magnetite veinlets hosted by small subvolcanic intrusions...banded quartz veinlets either in dark bands with magnetite or associated with pyrite in fractures postdating...as free grains of high fineness (910 to 990). At Marte, gold grains were found in the argillized groundmass...(plagioclase, amphibole, magnetite ± pyroxene) K K-silicate (biotite, K-feldspar, magnetite) K+Ca Chl K-silicate |  | Vikentyev, I. V., Mansurov, R. Kh., Ivanova, Yu. N., Tyukova, E. E., Sobolev, I. D., Abramova, V. D., Vykhristenko, R. I., Trofimov, A. P., Khubanov, V. B., Groznova, E. O., Dvurechenskaya, S. S., Kryazhev, S. G. (2017) Porphyry-Style Petropavlovskoe Gold Deposit, the Polar Urals: Geological Position, Mineralogy, and Formation Conditions. Geology of Ore Deposits, 59 (6) 482-520 doi:10.1134/s1075701517060058 | Journal (article/letter/editorial) | | Complex at a depth of approximately 2 km, skarn magnetite ore with subordinate sulfides was formed. At the...occurrences; (6, 8), gold–quartz/porphyry type; (7, 9), magnetite skarn with gold; (10) subvolcanic body of porphyritic...epidote–garnet–pyroxene skarn with gold–sulfide– magnetite mineralization projected on surface, (12) epi...epidote–garnet–pyroxene skarn (in section), (13) magnetite bodies in the section; (14) stockwork-like gold...disseminated substantially pyritic and subordinate magnetite ± hematite bedding-plane segregations hosted in |
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