 | | Journal (article/letter/editorial) | | Porphyry-Epithermal Transition: Maricunga Belt, Northern Chile JOHN L. MUNTEAN†,* AND MARCO T. EINAUDI Department...Refugio, Aldebarán, and La Pepa districts in the Maricunga belt of northern Chile contain advanced argillic...intrusive rocks. A-veinlets contain variable amounts of quartz, magnetite, biotite, and chalcopyrite and locally...and 0.1 to 0.4 percent hypogene copper. Banded quartz veinlets occur mostly above A-veinlets and cut...Data from rare liquid-rich inclusions in banded quartz veinlets indicate temperatures ≤350°C at pressures |  | | Journal (article/letter/editorial) | | Geochronologyof the Maricunga Gold-Silver Belt, Northern Chile RICHARD H. SILLITOE, 27 WestHill Park, HighgateVillage...ileLtda., AvenidaPedrode Valdivia295, Santiago,Chile Abstract The Maricungametallogenicbelt in northernChile...principalmineralizedcentersin the belt, includingthe La Coipa,La Pepa,Marte, andLobodeposits, weredatedradiometrically...Reand 28 ø S in the Andean Cordillera of northern Chile at Aldebaran,gold-silverat (Fig. 1) at altitudesrangingfromabout4...Kay et al. (1988) between La Coipasilver-gold(Oviedoet al., 1991) andthe La latitudes 28 ø S and 33 ø |  | | 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...intermediateargillic type. Much of the gold is presentin quartz stockworks.Iron oxides,both early magnetiteandlate...whichcarriesbarite, nativesulfur,enargite,andat La Pepa,high-grade,vein-type goldmineralizationof highsulfidation...transectedby a swarmof gold-poor,polymetallicveinswith quartz-alunite selvagesat Aldebaran. Marte andLobo are |  | | 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 |  | | 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...mineralization is centered on a composite diorite to quartz diorite porphyry stock, within which five outward-younging...and 0.4% Cu. The subsequent porphyry phases are quartz dioritic in composition and characterized by progressively...mineralization in the lower half of the deposit accompanies quartz ± magnetite-veined, potassic-altered rocks, whereas |  | 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...Permian to Triassic age. The earlier, more intensely quartz ± magnetite-veined porphyry phases and contiguous... zones, from shallow advanced argillic (mainly quartz-pyrophyllite) and underlying sericitic to deeper...low-arsenic, high-sulfidation assemblage in the quartz-pyrophyllite and sericitic zones. The outermost...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) | | 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) | | 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...obtained from Mapa GeoloÂgico de Chile (1982) and Mapa GeoloÂgico de la RepuÂblica Argentina (1982). Morphology...sections) perpendicular to the axis of the Peru±Chile trench, which enabled us to distinguish between |  | Oviedo, Luis, Fuster, Nicolas, Tschischow, Natasha, Ribba, Luis, Zuccone, Alvio, Grez, Enrique, Aguilar, Angelo (1991) General geology of La Coipa precious metal deposit, Atacama, Chile. Economic Geology, 86 (6) 1287-1300 doi:10.2113/gsecongeo.86.6.1287 | Journal (article/letter/editorial) | | 1287-1300 General Geology of La Coipa PreciousMetal Deposit, Atacama,Chile Luis OVIEDO, Los Quillayes191...Quillayes191, Las Vertientes,SanJosdde Maipo, Chile NICOLAS FUSTER, NATASHA TSCHISCHOW, LUIS RIBBA, ALVIO ZUCCONE...6651, Copiapd,Chile ENRIQUE GREZ, Goldfields,Chile, S.A.,CarmenSylva2449, Santiago,Chile AND ANGELO AGUILAR...Minera Homestake,Chile S.A.,Pedrode Valdivia 0193, 4 ø Piso,Santiago,Chile Abstract The La Coipaore depositis...northernChile.Twomainmineralized zonesarepresentat La Coipa, Ladera-Farel16n andCoipaNorte,bothhostedby |  | | Journal (article/letter/editorial) | | Magmatic Evolution of the Maricunga Mineral Belt in Chile a b c Suzanne Mahlburg Kay , Constantino Mpodozis...y Mineria, Avenida Santa Maria 0104, Santiago, Chile c Department of Geological Sciences, Snee Hall...y Mineria, Avenida Santa Maria 0104, Santiago, Chile Version of record first published: 06 Jul 2010....Magmatic Evolution of the Maricunga Mineral Belt in Chile, International Geology Review, 36:12, 1079-1112...Magmatic Evolution of the Maricunga Mineral Belt in Chile SUZANNE MAHLBURG KAY, Department of Geological Sciences |  | | 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...are zoned in space from a deeper zone of banded quartz veinlets associated with chlorite-magnetite-albite...a shallow zone of pyrite-albite-clay and local quartz-alunite ledges. Pancho contains an additional,... deepest, porphyry copperlike zone, with quartz veinlets (A-veinlets) and potassic alteration. Relative |  | | Report (issue) | | DESCRIPTIVE/GENETIC SYNOPSIS: Au is present in a stockwork of quartz veinlets within subvolcanic diorite, tonalite,...Viteri, The porphyry gold deposit at Marte, northern Chile, Economic Geology Monograph 8, in press. D. P. Cox...presentations by geologists at La Pepa, Alderberan, Marte and Lobo Mines, Chile. REGIONAL GEOLOGIC ATTRIBUTES...GANGUE MINERALOGY: Native gold and electrum in a quartz stockwork. Magnetite is commonly present. In sulfide...OF WEATHERING: Oxidation of sulfide minerals in quartz stockwork important in making low-grade ores amenable |  | | Book | | org/details/geologyofchile0000unse The Geology of Chile • The Geologica l Society of London Books Editorial...T. & GIBBO, s, W . (eds) 2007 . The Geology of Chile. The Geological Society, London. CHARRIER, R., PINTO...the Andean Orogeo in Chile. Jn: MORENO, T. & GrnsoNs, W. (eds) The Geology of Chile. The Geological Society...Society, London, 21-114. The Geology of Chile EDITED BY TERESA MORENO Earth Sciences Institute 'J aume...Grosjean 13. Field excursion from central Chile to the Atacama De<,crt. W. Gibbons & -1. Moreno 329 |  | 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) | | homogenization temperature of fluid inclusions in quartz and carbonate from crosscutting veinlets in the...of the Kyukyurtli extrusion is 140–170°C and in quartz from geyserite, 120–150°C. The temperature of formation...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...subvolcanic stocks of microdiorite, diorite, and quartz diorite emplaced into the vents of stratovolcanoes |  | Deyell, C.L., Rye, R.O., Landis, G.P., Bissig, T. (2005) Alunite and the role of magmatic fluids in the Tambo high-sulfidation deposit, El Indio–Pascua belt, Chile. Chemical Geology, 215 (1) 185-218 doi:10.1016/j.chemgeo.2004.06.038 | Journal (article/letter/editorial) | | high-sulfidation deposit, El Indio–Pascua belt, Chile C.L. Deyella,*, R.O. Ryeb, G.P. Landisb, T. Bissigc...deposit, located within the El Indio–Pascua belt in Chile, produced almost 25 t (0.8 M oz) of gold from altered...Episodic magmatic-hydrothermal activity in the district occurred over at least 4 my and is characterized...that of post-ore, coarse, banded aluniteFhematite-quartz veins that crosscut the breccias in the Tambo area...Indio–Pascua belt, within the Main Cordillera of Chile (Fig. 1). This belt hosts widespread zones of acid-sulfate |  | Pan, Jun-Yi, Ni, Pei, Chi, Zhei, Wang, Wen-Bin, Zeng, Wen-Can, Xue, Kai (2019) Alunite 40Ar/39Ar and Zircon U-Pb Constraints on the Magmatic-Hydrothermal History of the Zijinshan High-Sulfidation Epithermal Cu-Au Deposit and the Adjacent Luoboling Porphyry Cu-Mo Deposit, South China: Implications for Their Genetic Association. Economic Geology, 114 (4) 667-695 doi:10.5382/econgeo.4658 | Journal (article/letter/editorial) | | deposit, constitutes a major porphyry-epithermal ore district in South China. Current debate centers on whether...question of importance for exploration in the district. In this contribution, the magmatichydrothermal...assemblages exist at Zijinshan, namely, (1) alunite-quartz-covellite cemented breccias; (2) alunite-digenite...suggest a magmatic-hydrothermal origin for alunite-quartz-covellite cemented breccias and alunite-digenite...undisturbed 40Ar/39Ar plateau ages obtained from alunite-quartz-covellite cemented breccia and alunite-digenite |  | Franchini, Marta, Impiccini, Agnes, Lentz, David, Ríos, Francisco Javier, O'Leary, Sol, Pons, Josefina, Schalamuk, Abel Isidoro (2011) Porphyry to epithermal transition in the Agua Rica polymetallic deposit, Catamarca, Argentina: An integrated petrologic analysis of ore and alteration parageneses. Ore Geology Reviews, 41 (1) 49-74 doi:10.1016/j.oregeorev.2011.06.010 | Journal (article/letter/editorial) | | Ciencias Naturales y Museo, Universidad Nacional de La Plata, La Plata, Argentina b c a r t i c l e i n f o...and encapsulated in a widespread, white mica + quartz+ rutile or anatase halo (phyllic alteration) with...alteration have molybdenite in stringers and B-type quartz veinlets and the highest Mo grades (N 1000 ppm)...the earlier stages. Early andalusite ± pyrite± quartz is preserved in the roots of the argillic halo...porphyry-epithermal Cu–Au–Mo deposit is located in Catamarca province of Argentina, 25 km north of Andalgalá (27° 26′ |  | Huang, Wenting, Liang, Huaying, Wu, Lei, Wu, Jing, Li, Jing, Bao, Zhiwei (2018) Asynchronous formation of the adjacent epithermal Au-Cu and porphyry Cu-Mo deposits in the Zijinshan orefield, southeast China. Ore Geology Reviews, 102. 351-367 doi:10.1016/j.oregeorev.2018.09.023 | Journal (article/letter/editorial) | | ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) U-Pb ages for felsic igneous rocks associated...Zijinshan orefield (ZOF) is located in Fujian Province and is the richest Au-Cu mining area in southeast...the Shimaoshan Group within the ZOF yield zircon LA-ICP-MS U-Pb and Rb-Sr isochrone ages of 113-93 Ma...and Jiang, 2014b). Recent dating of syenite and quartz-monzonite dikes, and the Zhongliao porphyritic...zone is located at altitude of > 650 m, contains quartz, opaline silica, 8 limonite, goethite, dickite |  | | Book (volume) | | After moving to Australia in 】 979, Ross, as a District Manager with CRA Exploration, led the team that...existence o f a new unconformity-vein style uranium province in the Proterozoic of the Great Sandy Desert....Iran ian P o rp h y ry C u-M o-A u D eposits Brent LA. Mclnnes, Noreen J. Evans, Frank Q, Fut Steve Garwin...lm alyk (K a rm ak y r-D a ln e e ) and S au k b u la k C u-A u P o rp h y ry System s, U zbekistan IgorM...the largest deposits in any established porphyry province. For a discussion of the accepted terminology |  | Voudouris, P., Mavrogonatos, C., Spry, P.G., Baker, T., Melfos, V., Klemd, R., Haase, K., Repstock, A., Djiba, A., Bismayer, U., Tarantola, A., Scheffer, C., Moritz, R., Kouzmanov, K., Alfieris, D., Papavassiliou, K., Schaarschmidt, A., Galanopoulos, E., Galanos, E., Kołodziejczyk, J., Stergiou, C., Melfou, M. (2019) Porphyry and epithermal deposits in Greece: An overview, new discoveries, and mineralogical constraints on their genesis. Ore Geology Reviews, 107. 654-691 doi:10.1016/j.oregeorev.2019.03.019 | Journal (article/letter/editorial) | | multistage introduction of Au, the presence of banded quartz veinlets, and the local presence of tourmaline...porphyry Mo-W mineralization occurs as sheeted quartz veins and stockworks cutting a potassic- to sericitic-altered...sericitic-altered Miocene granodiorite stock in the Lavrion district. Bonanza grade Au- and/or Ag-rich veins with epithermal...2015). Within the western Tethyan metallogenetic province, the Oligocene- Miocene- and PliocenePleistocene...belts (Heinrich and Neubauer, 2002). The Aegean province comprises precious- and base-metal deposits/prospects |  | | Conference Proceedings (Volume) | | Cover photograph: View of the Aitik open pit copper mine in the very north of Sweden. Mining operations started...area of the Kristineberg VHMS deposit, Skellefte district, Sweden .......................................A. Massive Zn-Cu-Pb deposits in the Røros ore district, Norway: setting and formation ................ The Jörn granitoid complex, Skellefte mining district, Sweden: petrography, lithogeochemistry and emplacement...for VHMS deposits, Kristineberg area, Skellefte District, Sweden ..................................... |
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