 | 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...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...late Oligocene-Miocene volcanic belt of northern Chile and contiguous Argentina, showing the age assignment |  | | 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...-26°30’ ESPERANZA Argentina Chile Antofagasta LA COIPA Fig. 2 PUREN Copiapó Maricunga belt CASPICHE...-27° Salar de Maricunga CASERONES (REGALITO) MARTE PASCUA -LAMA VELADERO EL INDIO -30° -30° El |  | | Journal (article/letter/editorial) | | the Refugio District, Maricunga Belt, Northern Chile JOHN L. MUNTEAN†,* AND MARCO T. EINAUDI Department...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...porphyry gold-(copper) deposits (Refugio, Aldebaran, Marte, Lobo). Since 1980, an aggregate geologic resource...Segerstrom (1968), Zentilli (1974), La Coipa 27 o Marte Lobo Volcan Laguna Refugio 0 20 50 0 Volcan |  | | 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...rocks are overlain by Mesozoic to early Tertiary Marte Lobo Volcan Copiapo La Pepa PERU Volcan Laguna |  | | 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...stockworks.Iron oxides,both early magnetiteandlate hematite,constitute5 to 10 vol percentof mineralized zones...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 |  | | 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) | | 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...Santiago,Chile. ** Presentaddress:Avenida11 de Septiembre2250, Oficina1304, Santiago,Chile. 0361-01 |  | | Journal (article/letter/editorial) | | east of the main Andean porphyry copper belt of Chile. The deposit consists of a composite stock of dacitic...and have a closely overlapping distribution on the mine scale. A well-developed ore shell coincides with...include the porphyry copper deposits of El Salvador, Chile (Gustafson and Hunt, 1975), Ann Mason, Nevada (Dilles...de la Alumbrera as Argentina’s first major metal mine (Guilbert, 1995; Wall, 1997; Ulrich, 1998). Recently...producer in the world. Total reserves in the current mine plan are 402 million tons (Mt) with an average ore |  | | Journal (article/letter/editorial) | | east of the main Andean porphyry copper belt of Chile. The deposit consists of a composite stock of dacitic...and have a closely overlapping distribution on the mine scale. A well-developed ore shell coincides with...include the porphyry copper deposits of El Salvador, Chile (Gustafson and Hunt, 1975), Ann Mason, Nevada (Dilles...de la Alumbrera as Argentina’s first major metal mine (Guilbert, 1995; Wall, 1997; Ulrich, 1998). Recently...producer in the world. Total reserves in the current mine plan are 402 million tons (Mt) with an average ore |  | Davila, Alfonso F., Fairén, Alberto G., Gago-Duport, Luis, Stoker, Carol, Amils, Ricardo, Bonaccorsi, Rosalba, Zavaleta, Jhony, Lim, Darlene, Schulze-Makuch, Dirk, McKay, Christopher P. (2008) Subsurface formation of oxidants on Mars and implications for the preservation of organic biosignatures. Earth and Planetary Science Letters, 272 (1) 456-463 doi:10.1016/j.epsl.2008.05.015 | Journal (article/letter/editorial) | | borehole was drilled in September 2004 as part of the MARTE Project to a depth of 165 m into a subsurface pyrite...pyrite ore body at the Peña Del Hierro mine site (37.72665°N, 6.55328°W) near the town of Minas de Rio...mV), as inferred from the presence of jarosite, hematite and goethite in cracks and fissures of the pyrite...massive pyrite deposits of Rio Tinto during the MARTE project 2003–2005. From left to right: The lithology...(Burkins et al., 2000) and the hyper-arid core of the Atacama Desert (NavarroGonzález et al., 2003), and suggest |  | | 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...oxidized ore; goethite, jarosite, hematite and gypsum. Specular hematite is locally abundant (Caseli). Marcasite...mineralization. EXAMPLES Marte, Chile 46,000,000 mt; 1.43 gpt Au, 549 ppm Lobo, Chile 90,000,000 mt; 1.50...50 gpt Au, 0.1-0.2% Caseli, Chile Caravancha, Chile El Refugio, Chile 130,000,000 st; 1.03-1.51 gpt Au |  | | Journal (article/letter/editorial) | | DOI: 10.1089/ast.2007.0142 Special Paper The MARTE VNIR Imaging Spectrometer Experiment: Design and...Astrobiology Research and Technology Experiment (MARTE). The imaging spectrometer is a hyperspectral scanning...to VNIR wavelengths from 400–1000 nm. During the MARTE project, the spectrometer was deployed to the Río...new band modeling technique. We found most of the MARTE drill cores to contain predominantly goethite, though...though spatially coherent areas of hematite were identified in Core 23. We also distinguished non Fe-bearing |  | 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) | | 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...argillic cap commonly covers the subvolcanic bodies (Marte, La Pepa, Valle, and other gold deposits); at some...successfully mined in Chile at a rather great height (3000–4500 m). The Marte deposit, with Au reserves...volcanic belts of California, Nevada, Italy, Japan, Chile, the Kurile Islands (Kudryavy volcano), and Kamchatka |  | | 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) | | ORIGIN OF THE EL LACO MAGNETITE DEPOSIT, NORTHERN CHILE RICHARD H. SILLITOE† 27 West Hill Park, Highgate...Plio-Pleistocene volcanic arc of Region II, northern Chile, and comprises seven discrete bodies of massive...associated hydrothermal alteration, El Laco, northern Chile (latitude, 23°50'29.6"; longitude, 67°29'24.6")...elsewhere (e.g., Manto Verde copper deposit, northern Chile; Vila et al., 1996). Similar observations, also...overgrown by coarsely crystalline magnetite altered to hematite and limonite (m). Scale is 8.6 cm long. e. Block |  | 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) | | substantially pyritic and subordinate magnetite ± hematite bedding-plane segregations hosted in siltstone...deposit: (a) lit-par-lit disseminated magnetite (+ hematite rim) in host tuffs is “captured” by pyrite metacrystals;...with magnetite, pyrite, cobaltite, chalcopyrite, hematite, chlorite, carbonate, and high-fineness gold,...formation of small conformable iron ore (magnetite ± hematite) bodies and lit-par-lit sulfide disseminations...DEPOSIT 30 513 T = 250°С ΣК = 0.05 m Calcite 32 Hematite 34 Magnetite Bornite + Pyrite I Chalcopyrite |  | | Journal (article/letter/editorial) | | references therein). Red ochres are dominated by hematite and yellow ochres are typically dominated by goethite...result of natural acid rock drainage (NARD) and acid mine drainage (AMD) which tend to revert to goethite...in excess of ~250 ◦ C. Structurally disordered hematite has been encountered in the archaeological record...goethite ochre converted to well-crystallised hematite after 45 min burning in an open air, wood fire...fire, disputing the claims that “disordered” hematite is evidence for primitive heat treatment [13]. As |  | Fernández-Remolar, David C., Banerjee, Neil, Gómez-Ortiz, David, Izawa, Matthew, Amils, Ricardo (2018) A mineralogical archive of the biogeochemical sulfur cycle preserved in the subsurface of the Río Tinto system. American Mineralogist, 103 (3) 394-411 doi:10.2138/am-2018-6288 | Journal (article/letter/editorial) | | mining operation area that comprises the Río Tinto mine district, which is one of the world’s largest massive...oxidation. However, it is a well-known fact that acid mine drainage (AMD) originates from sulfide mineral oxidation...extreme acidic system. During 2003 and 2004, the MARTE project (Mars Analog and Technology Experiment)...BH8, BH10, and BH11 (Fig. 1), performed by the MARTE and IPBSL projects that were developed to provide...under aerobic conditions. Iron oxyhydroxides (hematite and goethite) are Downloaded from https://pubs |  | | Journal (article/letter/editorial) | | Some veins have well-developed sericite-quartz ± hematite alteration selvages and vein halos (Harris and...of pervasive quartz-sericite-pyrite ± carbonate-hematite alteration occur in the core of the deposit. Fault-...are affected by regionally extensive chlorite-hematite-epidote alteration (Heithersay et al., 1990)....E26, combined with access to extensive underground mine developments, has permitted the systematic mapping...sets were documented from the 9,800 RL of the E26 mine (Fig. 2 inset). Quartz vein and fault plane orientations |  | | Journal (article/letter/editorial) | | Located in the northern part of the El Indio belt of Chile-Argentina, the 12.6-million ounce (Moz) gold, late...deposits at the northern end of the El Indio belt, Chile and Argentina (Fig. 1; Jannas et al., 1990, 1999;...morphostructural province of the Central Andes, which straddles the Argentina-Chile † Corresponding ...metallogenic belt (Araneda, 1982), which lies mostly in Chile (Fig. 2); this belt is also referred to as the El...the many deposits within the belt, only those in Chile, which have proven economic, notably El Indio, Tambo |  | Quilaqueo, Michelle, Gim-Krumm, Minghai, Ruby-Figueroa, René, Troncoso, Elizabeth, Estay, Humberto (2019) Determination of Size Distribution of Precipitation Aggregates Using Non-Invasive Microscopy and Semiautomated Image Processing and Analysis. Minerals, 9 (12) 724 doi:10.3390/min9120724 | Journal (article/letter/editorial) | | (AMTC), University of Chile, Av. Tupper 2007 (AMTC Building), Santiago 8370451, Chile; michelle.quilaqueo@amtc...Metropolitana, Las Palmeras 3360, Ñuñoa, Santiago 7800003, Chile Programa Institucional de Fomento a la Investigación...Valdivieso 2409, San Joaquín, Santiago 8940577, Chile; rruby@utem.cl Correspondence: elizabeth.troncoso@utem...[2]; copper cementation, using scrap iron [1]; acid mine drainage (AMD) treatment, using milk of lime [3];...2 of 14 copper sulfide precipitation from acid mine drainage, using hydrogen sulfide [4] and copper |  | | Journal (article/letter/editorial) | | Planitia, bottle necking south of Orcus Patera to form Marte Vallis, and eventually debouching into Amazonis...atmospheric-driven modification such as by wind. Marte Valles, which occurs within the northern plains...most likely site locations for future analyses. Marte Vallis on Mars, for example (Fig. 6), may be the...(2010) 1823–1831 Fig. 6. THEMIS-base image showing Marte Vallis, Mars. Small arrows mark positions of proposed...basaltic and basaltic-andesite Mars with patches of hematite, for example, has evolved into a planet which |  | | Book | | label: Aerial view of the Bingham Canyon copper mine, Kennecott Utah Copper, September 2003. Photo courtesy...and CopperGold Deposits at Los Pelambres, Central Chile José Perelló, Richard H. Sillitoe, Constantino...of the Río Blanco-Los Bronces District, Central Chile: Development of World’s Greatest Known Concentration...Northern Chile Geologic Overview of the Escondida Porphyry Copper District, Northern Chile Geology of...N. Moreto, André Luiz Silva Pestilho, Mineral Province, Brazil Gustavo Henrique Coelho de Melo, Marco |  | | Journal (article/letter/editorial) | | referredto asa "porphyry' gold" deposit (e.g., Marte, Chile: Vila et al.,1991).Fe•vsuch WHEREAS thetransport...geothermal waterswill be fixedby tion andmagnetite(or hematite)alterationhasbeennoted reactionswith Fe sulfide...andfallwithintheapproximate bounds ofthepyrite+ hematite + magnetite, andpyrite+ pyrrhotite+ magnetite...andsalinity ofporphyrymagnetite (py-po-mt)and hematite-magnetite-pyrite (hm-mt-py)buffer therangeoftemperature...Theporphyry gold tional,v. 8, p. 468-481. depositat Marte,northernChile:ECONOMIC GEOLOGY, v. 86, p. 1271Shock |
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