 | | 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...-LAMA VELADERO EL INDIO -30° -30° El Indio belt LOBO LA PEPA VOLCAN PANTANILLOS Santiago -70° -27°30’ |  | | 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 |  | Pérez-Cáceres, Irene, Martínez Poyatos, David Jesús, Vidal, Olivier, Beyssac, Olivier, Nieto, Fernando, Simancas, José Fernando, Azor, Antonio, Bourdelle, Franck (2020) Deciphering the metamorphic evolution of the Pulo do Lobo metasedimentary domain (SW Iberian Variscides). Solid Earth, 11 (2). 469-488 doi:10.5194/se-11-469-2020 | Journal (article/letter/editorial) | | Deciphering the metamorphic evolution of the Pulo do Lobo metasedimentary domain (SW Iberian Variscides) Irene...– Published: 3 April 2020 Abstract. The Pulo do Lobo domain is one of the units exposed within the orogenic...intrusions also occur within the dominant Pulo do Lobo metapelites, related to an intra-orogenic Mississippian...Devonian–Carboniferous phyllites and slates of the Pulo do Lobo domain in order to study their poorly known low-grade...Devonian and Carboniferous formations of the Pulo do Lobo domain. The varied results obtained by the different |  | | Report (issue) | | ............................. Questa Molybdenum Mine ..................................................mapping and detailed study of the Questa molybdenum mine. A geologic map, scale 1:253,000, including this...corner of the quadrangle. The Questa molybdenum mine was described initially in a brief paper by Larsen...former general manager of the Questa Molybdenum mine, who was a constant inspiration to the field personnel...southern border, and the highest point, 12,106-foot Lobo Peak. The area can be divided into two physiographic |  | | Journal (article/letter/editorial) | | deposits in the western Luzon arc are determined: Lobo-Boneng (10.5±0.4 Ma), Santo Niño (9.5±0.3 Ma), Black...Solomon Islands defines a significant metallogenic province. The purpose of this paper is to document the...(Fig. 1) delineates late Cenozoic metallogenic province typical of the western Pacific margin. The chain...Guinaoang (Tirad) (Sillitoe and Angeles, 1985), the Lobo and Boneng (Jacinto, 1977), the Santo Niño (Bryner...(1995), Guinaoang: Sillitoe and Angeles (1985), Lobo: this study, Santo (Wolfe et al., 1978) in the southwestern |  | Chauvet, Alain, Onézime, Jérôme, Charvet, Jacques, Barbanson, Luc (2004) SYN- TO LATE-TECTONIC STOCKWORK EMPLACEMENT WITHIN THE SPANISH SECTION OF THE IBERIAN PYRITE BELT: STRUCTURAL, TEXTURAL, AND MINERALOGICAL CONSTRAINTS IN THE THARSIS AND LA ZARZA AREAS. Economic Geology, 99 (8) 1781-1792 doi:10.2113/gsecongeo.99.8.1781 | Journal (article/letter/editorial) | | of the Beja-Acebuches amphibolites, the Pulo do Lobo terranes, and the detrital sequences of Baixo Alentejo...1990). The Beja-Acebuches amphibolites and Pulo do Lobo terranes are interpreted as the Variscan suture...Iberian Pyrite Belt is a well-known metallogenic province containing some of the most important VMS deposits...Middle Namurian - Early Westphallian OMZ Pulo do Lobo - Gafo Formation Lower Tournaisian (?) and older...older Mira Formation Namurian b Pulo do Lobo formations Lower Devonian (?) - Famennian SPZ BAIXO ALENTEJO |  | | Journal (article/letter/editorial) | | formations, to high anchizone–epizone, and the Pulo do Lobo Formation presents values typical of epizonal conditions...tendency for the micas to be more similar to muscovite and less to illite with increasing metamorphic...l’épizone, tandis que dans la Formation de Pulo do Lobo, elles sont typiques de l’épizone. Malgré cette...mica dioctaédrique de ressembler davantage à la muscovite qu’à l’illite à mesure que l’intensité du métamorphisme...Formation), 5) Volcano-Sedimentary Complex, 6) Pulo do Lobo Formation, 7) Beja–Acebuches Ophiolite, 8) Peralkaline |  | | Book (volume) | | Investigación y Posgrado, Universidad de Atacama, Copiapó, Atacama, Chile James A. Braid Department of Earth...financial support to study the Mafic Rocks of the Pulo do Lobo Domain. Madrid, Spain Amadora, Portugal December.... . . . . . . . . . . . . . . . 5.3 The Pulo do Lobo Terrane . . . . . . . . . . . . . . . . . . . ....Mafic Rocks of the Pulo do Lobo Terrane . . . . . . . 5.3.2 The Pulo do Lobo Terrane Stratigraphic Sequence...al. 1994; Castro et al. 1996); (ii) the Pulo do Lobo unit, a polydeformed low-grade metasedimentary unit |  | | Journal (article/letter/editorial) | | ``oceanic exotic terranes'' (Quesada 1991): the Pulo do Lobo anticline and Beja-Acebuches amphibolites. The IPB...(1994b) in the northern part of the belt (La Joya Mine). These rocks consist of dark patches composed of...are peraluminous and contain cordierite and/ or muscovite (e.g. Chappell and White 1974; Pichavant 1993)...La Joya mine, (c) the average of 18 analyses of a porphyritic dacite from the AznalcoÁllar mine. The pattern...recognized: the Beja-Acebuches ophiolite and the Pulo do Lobo accretionary prism (Fig. 1). To the north these |  | | Journal (article/letter/editorial) | | collisional setting, the Late Paleozoic Pulo do Lobo Zone, Southern Iberia James A. Braid a,⁎, J. Brendan...structural analysis of the Late Devonian Pulo do Lobo (PDL) Formation, and suspect “exotic” South Portuguese...with orogenic-scale bulk strain. The entire Pulo do Lobo Zone is dominated by a pervasive late-stage vertical... the accretionary complex (known as the Pulo do Lobo Zone, PDL), potentially represents an exposed suture...Onézime et al., 2002). (B) Formations in the Pulo do Lobo Spanish section. Relative ages from palynologic |  | | 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...typically contain sericite, which is composed of muscovite that has a strong 2.20-μm absorption feature....ratios and methods, but different band thresholds, muscovite-rich, phyllic-altered rocks have also been regionally |  | | Book | | Metamorphic Evolution of the South Portuguese/Pulo Do Lobo Zone J. MUNHA . . . . . . . . . . . . . . . . ....Ordovicien, Silurien et Devonien dans Ie nord de la province de Seville (Espagne). C R Acad Sci Paris (Serie...erbiensis, the main localith being at Valdore (Leon province). The upper Member has yielded, just above its...du Cal caire de Cremenes (Devonien Superieur, province de Leon, Espagne). Leidse Geol Meded 30: 243-252...Arroyacas Formation (Arroyo de Las Arroyacas, province of Palencia, Spain) palynologically dated as Late |  | | Journal (article/letter/editorial) | | (Geraghty et al., 1988) and Chuquicamata NU in Chile (Ballard et al., 2001), or from newly discovered...super-giant Chuquicamata copper deposit of northern Chile by ELA-ICP383-386, DOI: 10.1130/0091- NU Barling...at Gameleira and Serra Verde, Carajás Mineral Province, Brazil: constraints from AC Re–Os molybdenite...copper–silver veins in the Collahuasi district, northern Chile. Economic Geology 99, 673690, DOI: 10.2113/99.4...Zentilli, M., 2001. Geology of the Chuquicamata Mine: A Progress Report. Economic Geology 96, |  | | 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...are overlain by Mesozoic to early Tertiary Marte Lobo Volcan Copiapo La Pepa PERU Volcan Laguna 0 |  | | 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...rocks containing hydrous minerals, especially muscovite (Clemens and Mawer, 1992; Vigneresse et al., 1996;...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 |  | Pereira, M.F., Gutíerrez-Alonso, G., Murphy, J.B., Drost, K., Gama, C., Silva, J.B. (2017) Birth and demise of the Rheic Ocean magmatic arc(s): Combined U–Pb and Hf isotope analyses in detrital zircon from SW Iberia siliciclastic strata. Lithos, 278. 383-399 doi:10.1016/j.lithos.2017.02.009 | Journal (article/letter/editorial) | | Carboniferous siliciclastic rocks from the Pulo do Lobo Zone, which is a reworked Late Paleozoic suture...Gondwana. Detrital zircon age spectra from the Pulo do Lobo Zone Frasnian formations show striking similarities...Meguma terrane and the Ossa-Morena Zone. Pulo do Lobo rocks also include representative populations of...Famennian-Tournaisian formations from the Pulo do Lobo Zone, however, contain CE P more abundant middle-late...siliciclastic rocks of SW Iberia (South Portuguese, Pulo do Lobo and Ossa-Morena zones) have a wide range in εHfT |  | Leistel, J. M., Marcoux, E., Thiéblemont, D., Quesada, C., Sánchez, A., Almodóvar, G. R., Pascual, E., Sáez, R. (1997) The volcanic-hosted massive sulphide deposits of the Iberian Pyrite Belt. Mineralium Deposita, 33 (1) 2-30 doi:10.1007/s001260050130 | Journal (article/letter/editorial) | | mines closing over the last two decades. Only ®ve mine sites are still active in the belt today. Four of...Read Belt-Tasmania (Cambrian) Canada (Superior Province ± Archean) Abitibi (Archean) Rouyn-Noranda+Val...from the FiloÂn Sur gossan by Caledonia). The only mine in Portugal is Neves-Corvo which is being worked...revised geological interpretations not only of this province, but of the entire Western Hercynides. The few...dealing with the mineralization of the Iberian province include that of Pinedo Vara (1963), who made an |  | | Report (chapter) | | pyroxene, neph = nepheline, wr = wholerock, musc = muscovite, verm = vermiculite, plag = plagioclase, XRF =... NM 4 Black Canyon of the Gunnison, CO 3 5 Lobo Hill, NM Democrat Creek, CO 6 Gem Park, CO 7...accompany alkaline intrusions in the Red Hills and at Lobo Hill also record a mafic component in Cambrian–Ordovician...associated syenite, McLemore et al. 1999) in the Lobo Hills alkaline complex in central New Mexico. Ages...variable in the Lemitar swarm. The carbon atites at Lobo Hill intruded associated syenitic and mon zonitic |  | | 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) | | complexes of the Mexican tin rhyolite belt, Cerro el Lobo and Cerro el Pajaro, to determine volcanic degassing...were heterogeneous prior to eruption. The Cerro el Lobo liquid contained gradients in volatiles and trace...topaz mineralization. These complexes, Cerro el Lobo (herein abbreviated CeL) and Cerro el Pajaro (CeP)...of central Mexico, showing locations of Cerro el Lobo (CeL) and Cerro el Pajaro (CeP) rhyolite dome complexes...for tin (Lehmann, 1990). 2.2. C e r r o el Lobo Cerro el Lobo, located approximately 6 km ENE of Tepetate |  | | Report (issue) | | ....... 6. Geologic sketch map of the Esperanza mine area................................................... 7. Cross section through Red Boy Peak and Lobo Peak .............................................development in the Sierrita Mountains at the end of 1968 Mine Company Year Rated capacity production (tons of...Indian Reservation about 2 miles northwest of Mission mine. 2 A little copper ore was mined during 1967; production...Volcanics from the rim of the Esperanza open-pit mine is incompatible with his dates of 130 and 140 m |  | | Journal (article/letter/editorial) | | Processes of the Dongping Gold Deposit, Hebei Province, China ............................D. Wang, J...Luanling Gold Telluride Deposit, Western Henan Province, Central China .................................Mineralization of the Kay Tanda Epithermal Gold Deposit, Lobo, Batangas, Philippines ..................S.M.P....Constraints from Zircon U-Pb, Molybdenite Re-Os, and Muscovite Ar-Ar Dating ................................ |  | | Report (chapter) | | amalgamation of Pangea. The suture zone (Pulo do Lobo Zone) is classically considered to be an accretionary...amount of ancient continental detritus. The Pulo do Lobo Zone together with the two bounding units (South...that much of the tectonic evolution of the Pulo do Lobo Zone post-dates the onset of collisional tectonics...the South Portuguese Zone, known as the Pulo do Lobo Zone (Quesada 1991), probably records events associated...Palaeozoic palaeogeography, in order to place the Pulo do Lobo Zone in a regional context, followed by a review |  | Milani, Lorenzo, Lehmann, Jérémie, Naydenov, Kalin V., Saalmann, Kerstin, Kinnaird, Judith A., Daly, J. Stephen, Frei, Dirk, Lobo-Guerrero Sanz, Alberto (2015) A-type magmatism in a syn-collisional setting: The case of the Pan-African Hook Batholith in Central Zambia. Lithos, 216. 48-72 doi:10.1016/j.lithos.2014.11.029 | Journal (article/letter/editorial) | | Kinnaird a, J. Stephen Daly d, Dirk Frei e, Alberto Lobo-Guerrero Sanz f a School of Geosciences, University...have been well-documented (Hanson et al., 1993; Lobo-Guerrero Sanz, 2005; Naydenov et al., 2014), but...map compilations (Geological Survey of Zambia). Lobo-Guerrero Sanz (2005) presented a broad collection...crystallization ages (U–Pb SHRIMP on zircons) were provided by Lobo-Guerrero Sanz (2005), who measured an age of 538...has been inferred from field mapping (Abell, 1970; Lobo-Guerrero Sanz, 2005). Four mafic intrusions, tholeiitic |  | | Journal (article/letter/editorial) | | biotite [ muscovite Guarda granite (304.1 ± 3.9 Ma), the coarsegrained porphyritic biotite [ muscovite Pega...Ma) and medium-to-coarse-grained muscovite [ biotite Fráguas-Pena Lobo granite (299 ± 3 Ma), (Ramos 2010;...Pega granites are lateD3, and the Fráguas-Pena Lobo granite is post-D3. All granites are peraluminous...0.7 wt% SnO2 in the Cabeço dos Poupos, Pena de Lobo–Sabugal zone (Neiva et al. 2011). The TiO2 content...similar those from Li-rich sills of the Gonçalo Li mine, and the pegmatite field west of Gaia placers (Ramos |
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