| Romero, BĂĄrbara, Kojima, Shoji, Wong, Chilong, Barra, Fernando, VĂ©liz, Walter, Ruiz, Joaquin (2011) Molybdenite Mineralization and Re-Os Geochronology of the Escondida and Escondida Norte Porphyry Deposits, Northern Chile. Resource Geology, 61 (1) 91-100 doi:10.1111/j.1751-3928.2010.00150.x | Journal (article/letter/editorial) | Geochronology of the Escondida and Escondida Norte Porphyry Deposits, Northern Chile BĂĄrbara Romero,1,2...University of CatĂłlica del Norte, 2Minera Escondida Ltd, Antofagasta, Chile and Department of Geosciences, University...the primary Mo-bearing mineral in the Escondida and Escondida Norte deposits were characterized using...occurrence of molybdenite are observed in the Escondida deposit: aggregates with Cu-Fe-sulïŹde minerals...35.2 â«Ÿ 0.2 Ma, respectively. Re-Os dating of Escondida Norte molybdenites also show two distinct episodes | | | Journal (article/letter/editorial) | constraints on the evolution of the ZaldĂvar porphyry copper deposit, Northern Chile Eduardo Campos & Jan Wijbrans...and cooling history of the ZaldĂvar porphyry copper deposit (Northern Chile) by applying a combination...temperatures, including 40Ar/39Ar geochronology and zircon fission track thermochronology, together with fluid...published UâPb zircon geochronology. The hydrothermal mineralization in the ZaldĂvar deposit is genetically...0.5 Ma (2Ï). In contrast, one sample from the ZaldĂvar porphyry, one from the andesites, and two from | | | Journal (article/letter/editorial) | 271â305 Geologic Evolution of the Escondida Area, Northern Chile: A Model for Spatial and Temporal Localization...Cu deposits at Escondida, ZaldĂvar, and Chimborazo (Cordillera de Domeyko, northern Chile). The purpose...explain the giant scale of mineralization at Escondida and provide predictive tools for exploration in...intermediate to felsic Permo-Carboniferous volcanism (La Tabla Formation), and these rocks appear to constitute...throughout much of the porphyry belt of northern Chile. Geochemically, they are I-type in character, but | | | 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 JosĂ© PerellĂł, Richard H. Sillitoe, Constantino...of the RĂo Blanco-Los Bronces District, Central Chile: Development of Worldâs Greatest Known Concentration...Northern Chile Geologic Overview of the Escondida Porphyry Copper District, Northern Chile Geology of...N. Moreto, AndrĂ© Luiz Silva Pestilho, Mineral Province, Brazil Gustavo Henrique Coelho de Melo, Marco | | Palacios, Carlos, RamĂrez, Luis E., Townley, Brian, Solari, Marcelo, Guerra, Nelson (2007) The role of the AntofagastaâCalama Lineament in ore deposit deformation in the Andes of northern Chile. Mineralium Deposita, 42 (3) 301-308 doi:10.1007/s00126-006-0113-3 | Journal (article/letter/editorial) | of the AntofagastaâCalama Lineament in ore deposit deformation in the Andes of northern Chile Carlos...Eocene, and Late EoceneâEarly Oligocene. The AntofagastaâCalama Lineament (ACL) consists of an important...this extensively gravel-covered region of northern Chile. Editorial handling: R. King C. Palacios (*) : L...Departamento de GeologĂa, Universidad de Chile, Santiago, Chile e-mail: cpalacio@ing.uchile.cl N. Guerra...CatĂłlica del Norte, Antofagasta, Chile Keywords Copper deposits . Lineaments . Northern Chile Introduction | | | Journal (article/letter/editorial) | Patagonia, Argentina: response to subduction of the Chile Ridge Richard H. Sillitoe 1 Received: 22 March 2018...massif during early stages of subduction of the Chile oceanic-ridge spreading center at the Pacific margin...the Deseado massif and Atacama Desert of northern Chile was the result of Cenozoic uplift during progressive... Epithermal Au-Ag deposits . Tectonic uplift . Chile Ridge . Deseado massif Introduction Supergene sulfide...mid-Cenozoic in the Atacama Desert of northern Chile (Alpers and Brimhall 1988; Sillitoe and McKee 1996) | | Correa, Karen J., Rabbia, Osvaldo M., HernĂĄndez, Laura B., Selby, David, Astengo, Marcelo (2016) The Timing of Magmatism and Ore Formation in the El Abra Porphyry Copper Deposit, Northern Chile: Implications for Long-Lived Multiple-Event Magmatic-Hydrothermal Porphyry Systems. Economic Geology, 111 (1) 1-28 doi:10.2113/econgeo.111.1.1 | Journal (article/letter/editorial) | in the El Abra Porphyry Copper Deposit, Northern Chile: Implications for Long-Lived Multiple-Event Magmatic-Hydrothermal...Ciencias de La Tierra, Casilla 160-C, Universidad de ConcepciĂłn, ConcepciĂłn CP 4030000, Chile 2 Instituto...Universidad de ConcepciĂłn, ConcepciĂłn CP 4030000, Chile 3 Department 4 Superintendencia of Earth Sciences...Contractual Minera El Abra, Calama CP 1390000, Chile Abstract Zircon LA-ICP-MS and CA-TIMS and molybdenite Re-Os...geochronology for the El Abra porphyry copper deposit (Chile) document a ~8.6 Ma protracted magmatic-hydrothermal | | | Report (chapter) | contents. Alunite from La Escondida, a porphyry copper deposit in northern Chile, is somewhat richer in...three other localities: La Tolfa, Italy; Marysvale, Utah; and Goldfield, Nevada. La Tolfa is a hot-springs...al. 1984, Rye et al. 1992). The alunites from both La Tolfa and Marysvale are not thought to be directly...Alunite analyzed by Stoffregen and Alpers (1987) from La Tolfa and Marysvale has significant and fairly consistent...advanced argillic alteration assemblages at the Temora mine in New South Wales, Australia, contain alunite, | | Munizaga, Francisco, Maksaev, Victor, Fanning, C.M., Giglio, S., Yaxley, G., Tassinari, C.C.G. (2008) Late PaleozoicâEarly Triassic magmatism on the western margin of Gondwana: Collahuasi area, Northern Chile. Gondwana Research, 13 (3) 407-427 doi:10.1016/j.gr.2007.12.005 | Journal (article/letter/editorial) | western margin of Gondwana: Collahuasi area, Northern Chile Francisco Munizaga a , Victor Maksaev a,â, C.M....Departamento de GeologĂa, Universidad de Chile, Plaza Ercilla 803, Santiago, Chile Research School of Earth Sciences...de Collahuasi, SCM, Pedro Lagos 1090, Iquique, Chile d Research School of Earth Sciences, Australian...âAltiplanoâ high plateau of the Andes of northern Chile mostly consists of late Paleozoic to Early Triassic...of Chile, the Frontal Cordillera of Argentina (Choiyoi Group or Choiyoi Granite-Rhyolite Province), and | | 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) | Peru JOSĂ PERELLĂ,â Antofagasta Minerals S.A. Ahumada 11, Oficina 602, Santiago, Chile VĂCTOR CARLOTTO...Universidad Nacional San Antonio Abad del Cuzco. Avenida de la Cultura, Cuzco, PerĂș ALBERTO ZĂRATE, PEDRO RAMOS...CABALLERO, Minera Anaconda PerĂș S.A. Avenida Paseo de la RepĂșblica 3245, Piso 3, San Isidro, Lima 27, PerĂș...AND RICARDO MUHR Antofagasta Minerals S.A. Ahumada 11, Oficina 602, Santiago, Chile Abstract Originally...rapidly emerging as an important porphyry copper province. Field work by the authors confirms that mineralization | | | Journal (article/letter/editorial) | PALEOPROTEROZOIC PRECURSOR TO THE LARAMIDE PORPHYRY COPPER PROVINCE Richard H. Sillitoe,1,â Robert A. Creaser,2 Richard...AmĂ©rico Vespucio 100, piso 8, Las Condes, Santiago, Chile Abstract Re-Os dating of two molybdenite samples...(Late Cretaceous-early Tertiary) porphyry copper province of southwestern North America as previously presumed...island-arc setting and are now part of the Yavapai province, which was assembled and accreted to the Archean...slightly older VMS deposits shows that the Laramide province of southwestern North America first developed | | Simmons, A. T., Tosdal, R. M., Wooden, J. L., Mattos, R., Concha, O., McCracken, S., Beale, T. (2013) Punctuated Magmatism Associated with Porphyry Cu-Mo Formation in the Paleocene to Eocene of Southern Peru. Economic Geology, 108 (4) 625-639 doi:10.2113/econgeo.108.4.625 | Journal (article/letter/editorial) | at Cuajone, Quellaveco, and Toquepala. Ten new zircon U-Pb Sensitive High Resolution Ion MicroprobeReverse... SIMMONS ET AL. Toquepala (Fig. 2). We report zircon U-Pb ages at Cuajone and Toquepala (Table 1) for...20° La Colorado Rosario-Uyina-Quebrada Blanca Bolivia N Spence trench Chuquicamata eru-Chile Eocene-Oligocene...Eocene-Oligocene porphyry Cu-Mo belt La Escondida Axis of P 25° El Salvador Bajo de la Alumbrera Miocene porphyry...porphyry Cu-Au belt 30° Chile Argentina Miocene porphyry Cu-Mo belt Santiago 0 50 El Teniente 35° | | | Journal (article/letter/editorial) | ppm, Yb â€1.9 ppm, Ni â„20 ppm, Cr â„30 ppm, Sr/Y â„20, La/Yb â„20, and 87Sr/86Sr â€0.7045. Rocks with such compositions...as low Y and Yb concentrations and high Sr/Y and La/Yb ratios, can be generated in normal asthenosphere-derived...Kay (1978), these rocks were characterized by high La/Yb ratios (i.e., high ratios of light rare earth...Rapp and Watson (1995); the HREE depletions (high La/Yb ratios) indicated residual garnet in the source...(1986), Drummond and Defant (1990) also used a plot of La/Yb versus Yb (Fig. 1b) to emphasize the strong HREE | | | Journal (article/letter/editorial) | composition arc-related igneous rocks with high Sr/Y (and La/Yb) ratios, and such rocks are equated by some researchers...crustal levels, resulting in increasing Sr/Y and La/Yb ratios with differentiation, commonly into âadakiticâ...or âadakitesâ) are thought to have high Sr/Y (and La/Yb) ratios because of the presence of garnet and...non-adakitic compositions toward high, adakite-like Sr/Y and La/Yb ratios. In this paper, I examine the logical arguments...light rare earth elements (LREE) such as La, leading to high La/Yb ratios (â„20). Plagioclase, which sequesters | | | Journal (article/letter/editorial) | Examples are Chuquicamata, El Teniente or La Escondida, all in Chile, or Henderson, Butte and Bingham, in...Metal T FI (°C) Bajo de la Alumbrera, Argentina Zaldivar Chile La Escondida Chile Bingham Utah Hudson Bay...Ga 2 Pd Co Cu Mo PtRh Lu Os Nb CrCo Zn Cd V Y La Mn Zr Ti Sn Sc Au Sr Ir Co Rb Ag K Cu SH Cl F Tl...magma composition (Robb, 2004). Some metals (Zr, La, Hf, Mn) obviously present low partitioning within...zonation around mineralized plutons: ïŹuid inclusions LA-ICP-MS evidence for the Mole granite, Australia. | | | Journal (article/letter/editorial) | as Cu in Sbearing MVP, as in Zaldivar, northern Chile (Campos et al., 2002; Harris et al., 2008; Rabbia...Au-bearing fluid inclusions are also observed from Bajo de la Alumbrera, Argentina (Ulrich and Heinrich, 2001)...Bajo de la Alumbrera, Argentina (Ulrich and Heinrich, 2001), from 750 to 900 °C in Zaldivar, Chile (Campos...(Campos et al., 2002), from 650 to 680 °C in La Escondida, Chile (Padilla-Garza et al., 2004) and from 640...Colorado (Carten et al., 1988), 6 at Zaldivar-La Escondida (Padilla-Garza et al., 2004), and 4 in the Indio | | | Book | continue in the Patagonian Andes of Argentina and Chile over the last years. As a result of this extensive...de GeologĂa, Universidad Andres Bello, Santiago, Chile Graeme Eagles Helmholtz Centre for Marine and Polar...de GeologĂa, Universidad Andres Bello, Santiago, Chile Gonzalo Galaz Departamento de GeologĂa Regional...Bello, Santiago, Chile; Departamento de GeologĂa, Universidad de Chile, Santiago, Chile Marco MafïŹone Department...Servicio Nacional de GeologĂa y MinerĂa, Santiago, Chile Christian Sue Bourgogne Franche-ComtĂ© University | | | Journal (article/letter/editorial) | Andreas AudĂ©tat Distinguishing magmatic zircon from hydrothermal zircon: A case study from the Gidginbung high-sulphidation...systematics of sulfide inclusions from the Jagersfontein MineâSonja Aulbach, Steven B. Shirey, Thomas Stachel...Geology of a complex kimberlite pipe (K2 pipe, Venetia Mine, South Africa): insights into conduit processes...No. 5, 2009 Copper isotope fractionation in acid mine drainageâB.E. Kimball, R. Mathur, A.C. Dohnalkova...of magnetite in iron ores of the Kiruna type in Chile and SwedenâJan Olov Nystrom, Kjell Billström, Fernando | | Huang, Xiao-Wen, Sappin, Anne-AurĂ©lie, Boutroy, Ămilie, Beaudoin, Georges, Makvandi, Sheida (2019) Trace Element Composition of Igneous and Hydrothermal Magnetite from Porphyry Deposits: Relationship to Deposit Subtypes and Magmatic Affinity. Economic Geology, 114 (5) 917-952 doi:10.5382/econgeo.4648 | Journal (article/letter/editorial) | Survey of Canada, Natural Resources Canada, 490 rue de la Couronne, QuĂ©bec, QuĂ©bec G1K 9A9, Canada 5 Agnico...ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) and then classified by partial least squares-discriminant...ablation-inductively coupled plasma-mass spectrometry (LA-ICPMS). The geochemical data were investigated by...Yonsei University user Western South America Bajo de la Argentina Cu-Au Production and Miocene High-K Dacite...Mo, â 2016) â and 6.10 g/t Ag Escondida Norte Chile Cu-Mo Production and Eocene Calc-alkaline | | Pedrera, A., Galindo-ZaldĂvar, J., Acosta-Vigil, A., Azor, A., GonzĂĄlez-MenĂ©ndez, L., RodrĂguez-FernĂĄndez, L.R., Ruiz-ConstĂĄn, A. (2016) Serpentinization-driven extension in the Ronda mantle slab (Betic Cordillera, S. Spain) Gondwana Research, 37. 205-215 doi:10.1016/j.gr.2016.05.008 | Journal (article/letter/editorial) | Cordillera, S Spain) IP T Pedrera, A. a.*; Galindo-ZaldĂvar, J. b,c; Acosta-Vigil, A. c,d; Azor, A. b; GonzĂĄlezMenĂ©ndez...Granada, Spain. c Instituto Andaluz de Ciencias de la Tierra, CSIC and Universidad de Granada, Armilla...Domain during and after collision (e.g. Galindo-ZaldĂvar et al., 1998). The Ronda and Beni Bousera peridotite...Priem et al., 1979) and, particularly U-Pb SHRIMP and LA-ICP-MS studies (18.8±4.9 Ma, SĂĄnchez-RodrĂguez and...D matching a given stress field (e.g. Galindo-ZaldĂvar and GonzĂĄlez-Lodeiro, 1988). We have measured | | Acosta-Vigil, Antonio, Rubatto, Daniela, Bartoli, Omar, Cesare, Bernardo, Meli, Sandro, Pedrera, Antonio, Azor, Antonio, TajÄmanovĂĄ, Lucie (2014) Age of anatexis in the crustal footwall of the Ronda peridotites, S Spain. Lithos, 210. 147-167 doi:10.1016/j.lithos.2014.08.018 | Journal (article/letter/editorial) | TajÄmanovĂĄ f a Instituto Andaluz de Ciencias de la Tierra, Consejo Superior de Investigaciones CientĂïŹcasâUniversidad...Available online 6 September 2014 Keywords: UâPb zircon SHRIMP dating Crustal anatexis Ronda peridotite...provide a tighter age constraint on the metamorphism. Zircon ages are related to conditions of metamorphism...metamorphism on the basis of the relationships between zircon microstructures and degree of melting recorded by the...crystals in metatexites and diatexites. Thin, U-rich zircon rims that are affected by radiation damage yield | | Negro, F., de Sigoyer, J., GoffĂ©, B., Saddiqi, O., Villa, I.M. (2008) Tectonic evolution of the BeticâRif arc: New constraints from 40Ar/39Ar dating on white micas in the Temsamane units (External Rif, northern Morocco) Lithos, 106 (1) 93-109 doi:10.1016/j.lithos.2008.06.011 | Journal (article/letter/editorial) | documented in the core of the internal Betics (Galindo-ZaldĂvar et al., 1989; GarcĂa-Dueñas et al., 1992; Jabaloy...Temsamane and show similar kinematics (Galindo-ZaldĂvar et al., 1989; GarcĂa-Dueñas et al., 1992; Jabaloy...datos sobre la edad de las formaciones miocenas transgresivas sobre las zonas internas Beticas; la Formacion...Pedro de Alcantara (Provincia de Malaga). Revista de la Sociedad GĂ©ologica de España 3, 79â85. Andriessen...externes du Rif, L'Arc de Gibraltar. Bulletin de la SociĂ©tĂ© GĂ©ologique de France 15, 106â107. Augier | | | Journal (article/letter/editorial) | Soto, Kelley, & Thirlwall, 2006), U/Pb dating on zircon (17-15 Ma: LĂłpez SĂĄnchez-VizcaĂno, Rubatto, GĂłmez-Pugnaire...between metamorphism and Lu-Hf dating of garnet and zircon because (1) the Lu-Hf system can be problematic...to incomplete isotopic homogenization, and (2) zircon may not grow during all metamorphic events. This...Ma for the NFC and c. 50Ma for the AC). Similar zircon ages between NFC and the Iberian massif basement...Nieto, & GonzĂĄlez-Lodeiro, 2007; Jabaloy, Galindo-ZaldĂvar, & GonzĂĄlez-Lodeiro, 1993; Lonergan & Platt, 1995) | | | Book (volume) | Barcelona, Spain JesĂșs Galindo-ZaldĂvar Instituto Andaluz de Ciencias de la Tierra, CSIC-UGR, Granada, Spain...GRC GeociĂšncies Marines, Departament de DinĂ mica de la Terra i de lâOceĂ , Universitat de Barcelona, Barcelona...Sanz de Galdeano Instituto Andaluz de Ciencias de la Tierra, CSIC-UGR, Granada, Spain Josep M. Salvany.... . . . . . . . . . . . . . . . JesĂșs Galindo-ZaldĂvar, Juan C. Braga, Carlos MarĂn-Lechado, Gemma Ercilla.... . . . . 6.3 The Campo de Calatrava Volcanic Province (CCVP) . References . . . . . . . . . . . . . | | Stefanova, E., Driesner, T., Zajacz, Z., Heinrich, C. A., Petrov, P., Vasilev, Z. (2014) Melt and Fluid Inclusions in Hydrothermal Veins: The Magmatic to Hydrothermal Evolution of the Elatsite Porphyry Cu-Au Deposit, Bulgaria. Economic Geology, 109 (5) 1359-1381 doi:10.2113/econgeo.109.5.1359 | Journal (article/letter/editorial) | porphyry in the Zaldivar porphyry Cu deposit in Chile to represent the primary magmatic fluids exsolved...saturation of the Llamo porphyry at depth. At the Bajo de la Alumbrera porphyry Cu-Au deposit in Argentina, Harris...Cu-Au deposit is the largest operating open-pit mine in Bulgaria, located on the Etropole ridge of the...developed on the south and west marginal parts of the mine and range from few cm to 40 cm wide. These veins...inclusions from the same assemblages were measured after LA-ICP-MS analyses. Melt inclusions in Elatsite vein |
|