 | | Journal (article/letter/editorial) | | L. ROMER2 1 INSTITUTO DE GEOLOGÍA Y MINERÍA, UNIVERSIDAD NACIONAL DE JUJUY-CONICET, AVDA. BOLIVIA...BOLIVIA 1661, SAN SALVADOR DE JUJUY, ARGENTINA 2 GEOFORSCHUNGSZENTRUM-POTSDAM, TELEGRAFENBERG 14473, POTSDAM...pre-Upper Miocene volcanism in the northern Puna of Argentina (22°S–24°S). Two phases of volcanism produced...large-volume caldera-sourced ignimbrites (Schneider, 1985; de Silva, 1989a; Francis et al., 1989; Ort et al., 1996;...transverse mafic centres (Kay et al., 1994a; Davidson & de Silva, 1995; Redwood & Rice, 1997). In comparison |  | | Journal (article/letter/editorial) | | deposits of the Ag-Sn Formation located within Argentina and Bolivia have been investigated mineralogically...the National Research Councils of Austria and Argentina, respectively. The Geological Survey of Bolivia...gold-copper-, silver-tin- and silver deposits can be distinguished. Starting with Argentina, the deposits...be mentioned. The vein-type deposits of the Sierra de Famatina (Mejicana and Upulungus veins) carry gold-...selenium province at La Rioja is the largest one on earth. The prominent districts 137 are Sierra de Cacho |  | | Report (issue) | | UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY NEOGENE-QUATERNARY VOLCANISM AND MINERALIZATION...Paz, Bolivia; and Raul Sal as 0., Servicio Nacional de Geologia y Mineria, Santiago, Chile Open-File Report...of the central Andean region of northwestern Argentina, western Boliva, northern Chile, and southern...northern Chile, western Bolivia, and northwestern Argentina. The information presented has been abstracted...deposits, and world-class resources of lead, zinc, silver, gold, antimony, bismuth, tin, and tungsten. Obviously |  | | Journal (article/letter/editorial) | | mesosiderite strewnfield HOLGER PEDERSEN, I CLAUDIO CANUT DE BON,> AND HARRI LINDGREN' 'Copenhagen University...Voldgade 3, DK 1350 Copenhagen K, Denmark 'Universidad de La Serena, Casilla 554, La Serena, Chile 'European...league = 4.5 km, but see later) southeast ofthe silver mine Isla, close to Taltal. The terrain on which it...the cart-track which runs from the port of Pan de Azucar and which passes by the refuge or watering place...excursion from the recently discovered nearby silver mine Esmeralda (alias Vaca Muerta, see Appendix A) |  | | Journal (article/letter/editorial) | | Erzlagerst~itten, z.B. Chuquicamata, Salvador, Potrerillos, Agua de Dionisio, Famatina, Pachon-Pelambre, Disputada und...(such as Chuquicamata, Salvador, Potrerillos, Agua de Dionosio, Famatina, Pachon-Pelambre, Disputada and... H. G. L. BASSI,Centro de Investigaciones en Recursos Geol6gicos, Ramirez de Velasco 847, Buenos Aires...Aires (1414), Argentina. El procesamiento estadfstico de las megafracturas y tineamientos de los territorios...territorios de La Argentina, Chile y Uruguay y ia determinaci6n de las orientaciones estrucmrogen&icas de m~s |  | | Journal (article/letter/editorial) | | 200, Reno, Nevada 89521 DOUGLAS A. ARCHIBALD, Department of Geological Sciences and Geological Engineering...Zealand Abstract The El Peñón epithermal gold-silver deposit, Region II, Chile, comprises multiple epithermal...intersected by drill holes and in the underground mine workings, is 59.2 ± 1.6 Ma based on whole-rock K/Ar...Marinovic et al., 1995; Servicio National de Geología y Minería de Chile (SERNAGEOMIN), 2003; Fig. 1). El...occur at El Peñón, Faride, El Soldado, and Cachinal de la Sierra, which formed during the Paleocene and |  | | Journal (article/letter/editorial) | | S) a b Terence T. Kato & Estanislao Godoy a Department of Geological and Environmental Sciences, California...S) Terence T. Katoa* and Estanislao Godoyb a Department of Geological and Environmental Sciences, California...western margin of the Chilean Coastal Range (Cordillera de la Costa) which supports the existence of a N–S-trending...established at the 1978 Penrose Conference on Melanges (Silver and Beutner 1980). The presence of low shear strength...which contain little to no identifiable matrix (Silver and Beutner 1980; McCall 1983). The mélange zones |  | | Book | | .....• ••~.. lnstituto Tecnol6gico i ~ GeoMinero de Espana Special Publication No. 8 f_o_r_G~e~o-lo_g_y_...CARDOZO Universidad Nacional de lngenieria, and Newmont Peru Limited Gerente de Exploraciones Av. Jose Galvez...CEDILW Facultad de Minas, Metalurgia y Geologia, Universidad de Guanajuato Ex-Hacienda de San Matias s/n...Prof. Dr. Lwfs FONTBOTE Departement de Mineralogie, Universite de Geneve 12, rue des Maraichers CH-1211...Prof. Dr. JOSE FRUTOS Programa de Geologia Econ6mica Aplicada, Universidad de Concepci6n Casilla 4107 Concepci6n |  | | Journal (article/letter/editorial) | | Antofagastaand the strikingpromontoryof the Morro de Mejillonesin rangesmorebrokenand ruggedthan thoseof...TamarugalValley penetratesthe provincein the Llano de la Paciencia,the clear cut, continuousCentral Valley...attainingaltitudesof 2,0o0meters. At E1 Boquete, Perion or Pan de Azucar and elsewhere nitrate occurs on the slopesand...southeastdirection,extendto a knot of peakswest of the Salar de Atacama where the range changesdirection sharplyto...activity, mineralizingsolutionshad accessto the rocks. Silver veins were formed in limestones,copperand gold |  | | Book (volume) | | Composition and Structure by Vagn F. Buchwald Department of Metallurgy ,_Technical University , Lyngby... if Chilean leagues) east of Chanaral, in the province of Atacama. The corresponding coordinates are...SELECTED CHEMICAL ANALYSES -- References Simpson 1938 De Laeter 1972 Rosman 1972 Scott et a!. 1973 Ni 7...photograph of the exterior were given by McCall & de Laeter (I 965 : 38 and plate 3). although the width...that the meteorite had been discovered in the Sierra de La Madera, 12 km northeast of Moctezuma. Nininger |  | | Journal (article/letter/editorial) | | NONFERRO•DEPOSITS PAI•OZOIC TO RECENT (EXC•IVE OF•SlPPI De•nsit Rank zo• •h, B.C. •tall•, w•. •a, J•. sis•...in additionincludesa numberof importantgold and silver mines or districts that are well represented by...that are evident in manycases. Thus Trepga,Cerro de Pascoand Laurium are all associated with Tertiary...reference11); and finally, evenwith Aguilar, Argentina,onceattributedby this writer (3) to a granite...geologicaldescriptionof the Barberton depositsee de Villiers (24). REGIONAL COMPARISONS Eastern North |  | | Journal (article/letter/editorial) | | arsenic, antimony, copper, chromium, molybdenum, silver, indium, zinc and palladium have been determined...groups. I t is also sho~m that arsenic, antimony, silver, indium and zinc are generally concentrated in...p e r , c h r o m i u m , m o l y b d e n u m , silver, i n d i u m , z i n c a n d p a l l a d i u m...follows: (a) arsenic, antimony and indium; (b) silver, molybdenum and zinc; (c) copper, chromium and...arithmetic mean for each element is shown, those for silver, indium and zinc being upper limits only. The sulphur |  | | Journal (issue) | | NATURAL HISTORY MUSEUM HENRY HORBACK Assistant, Department of Geology, Chicago Natural History Museum...authors would like to thank Mrs. Winifred Reinders, Department of Geology, Chicago Natural History Museum, for...crust; figures well marked, 19 grams Mel070 (Rancho de Amates, los Amates), Iguala, Morelos, Mexico ...crust, 3 grams Mel469 Reis, Angra dos Reis, Rio de Janeiro, Brazil January 30, 1869, 5:00 A.M. Stone...Atemajac, Fell: February Stone, Atemajac, Sierra de Topalpo, Jalisco, Mexico 26, 1896 Gray hypersthene-chondrite |  | | Book (edition) | | large pieces are rated so low as their weight in silver. Thus much money expenditure has been essential...the entire collection of the late Excellenz Julien de Siemaschko. St. Petersburg This collection of...of the British Museum notes its specimen of Rancho de la Pila as weighing 46,512.4 grammes. Can they weigh...(Concepcion) 49 49 264 375 10 10 Om Sierra de las Adargas (26 N, 105 14' W), nine leagues south... near Ostrau, 19 Om Medium Octahedrite Rancho de los Amates (18 30' N, 99 22' W), N. of Iguala, State |  | | Journal (article/letter/editorial) | | Oktibbeha County Oscuro Mountains Osseo O~'en Pan de Azucar Paraeutu Peeora Escarpment 91003 Pine River...Sarepta Seelltsgen Selignum Seymour Shrewsbury Silver Crown Smithville Soledade Southern Arizona Surprise...Jenkins 69.2 Campodel Ciek 713 Wolsey 66.2 Pan de Azucar 69.2 Odessa 71.9 Seelasgen 66.5 Ozren 69.3 SilverCrown...Ga(gg/g) Hope 90.6 Yenberrie 83.0 Landes 89.9 Pan de Azucar 830 Jaralito 89.4 PCA 91003 826 Pittsburg 89...18 Yardea 4.32 Pan de Azacar 2.81 Harlowton 2.49 MesaVerde Parl 2.17 Landes 4.26 Silver Crown 2.81 Idaho |  | | Journal (article/letter/editorial) | | twasson@ucla.edu). 1 Also at: Department of Earth and Space Sciences and Department of Chemistry and Biochemistry...Grosvenor Mt GRO95511 Grove Mtns 98003 Guangxi Coal Mine Harlowtown Hasparos Hassi-Jekna Hope Idaho Itapuranga...Sarepta Seeläsgen Seligman Seymour Shrewsbury Silver Crown Soledade Smithville Sombrerete Surprise Springs...Wichita County Deelfontein Jenkins Guangxi Coal Mine Silver Crown Ozren Rifle Purgatry Pk PGPA77006 Bohumilitz...Thoreau (paired with Odessa) and four irons (Pan de Azucar, Mayerthorpe, Surprise Springs, and Petropavlovsk) |  | | Report (issue) | | skarns 33 Alao terrane 36 Alao-Paute unit 36 El Pan unit 38 Maguazo unit 39 Guamote terrane • 41 Opluolitic...(primary) 81 Gold (secondary) 86 Gold analysis 87 Silver 91 Base metals 94 Copper, lead and zinc 95 Cadmium...Oro (Figure 2), the subject of this 1nen1oir, were de- 4 ONE INTRODUC-r!ON picted on the national...the Llanganates area (Kennerley, 1971) and Loja Province (Kennerley, 1973) . Feininger (1978, 1980) con...Incan kingdom of Quito was knov.rn for its gold, silver and platinum jew ellery which, in those times |  | | Report (chapter) | | cones (we); active (a); collapsed (c). 1, Cerro Negro de Marasquer (Rwc); 2, Chiles (Pwc); 3, Chalpatan (C);...20, Yahuarcocha (C); 21, Imbabura (P); 22, Cerro de Araque (I); 23, Cerro Cubilche (I); 24, Guangaba...41, Ruhu Pichincia (P); 42, Ilalo (P); 43, Pan de Azucar (S); 44, Cerro Negro (R); 45, Loa Guacamayos...report Mio-Pliocene ages. The ignimbrites of Cuenca province have to be younger than 6 Ma because all along...the Inter-Andean Depression of Ecuador. Russo & Silver (1996) highlighted an apparent symmetry in the |  | Townley, Brian, Roperch, Pierrick, Oliveros, Verónica, Tassara, Andres, Arriagada, César (2007) Hydrothermal alteration and magnetic properties of rocks in the Carolina de Michilla stratabound copper district, northern Chile. Mineralium Deposita, 42 (7) 771-789 doi:10.1007/s00126-007-0134-6 | Journal (article/letter/editorial) | | and magnetic properties of rocks in the Carolina de Michilla stratabound copper district, northern Chile...Tassara : C. Arriagada Departamento de Geología, Universidad de Chile, P.O. Box 13518, Correo 21, Santiago...magnetization of the ore bodies of the Estefania mine. If copper mineralization mostly postdates the tilt...mineralization . Chile Abstract In the Carolina de Michilla district, northern Chile, stratabound copper...BUEY MUERTO MICHILLA DISTRICT 23º OCEAN MANTOS DE LA LUNA P ACIFIC SIERRA MIRANDA IVAN MANTOS BLANCOS |  | | Journal (article/letter/editorial) | | esquema geol6gieo de la zona preandina del norte de Chile conocida como Cordillera de Domeyko. E1 /trea...Author's address: Prof. G. CHONC Diaz, Departamento de Geologfa, Universidad del Norte, Casilla 1280, Antofagasta...Terciario. Estos capitulos aparecen de~inidos por la presencia de discordancias en el registro estratigr~ico...Instituto de Investigaciones GeolSgicas and an exploration program undertaken by the Department of Geology...through horsts or separated from them by basins (Llano de la Paciencia. Atacama - - Punta Negra). Finally, |  | | Journal (issue) | | CLASSIFIED Oliver Cummings Farrington, Curator, Department of (Jeology Chicago, U. March i, S. 1907...to be found in the examination in 1802, by Count de Bournon, J of some so-called native irons from Bohemia...Bohemia, Senegal, and South In these Count de Bournon found percentages of nickel America. ranging from...Ataxite Denton County Hexaliedrite Descubridora De Buckeberg Fine octahedrite Fine octahedrite Burlington...Lagrange Medium octahedrite Coarse octahedrite Pan de Azucar *Persimmon Creek. .Brecciated octahed- Laurens |  | Cobbing, E. J., Pitcher, W. S., Wilson, J. J., Baldock, J. W., Taylor, W. P., McCourt, W., Snelling, N. J. (1981) The Geology of the Western Cordillera of northern Peru. Overseas Memoir 5. Institute of Geological Sciences | Report (issue) | | programme of research under taken by the Geology Department of Liverpool University under the leadership...metallogeny in the Western Cordilleran polymetallic province of northern Peru 115 Synopsis of mineral deposits...rvrorococha/Casapalca group 117 Huar6n group 117 Cerra de Pasco group 119 Raura/Huanzala group 120 Cordillera...K-Ar·age determinations for the Churin, Acos, and Cerro de Pasco stocks 99 K-A.r age detenninations for the...S. Pilcher, DSc, DIC, MRIA, FGS, FIMM, MICeol Department of Geology, The University of Liverpool, Liverpool |  | | Book | | Sciences Institute 'J aume Almera', Consejo Superior de I11vestigaciones Cientificas, Barcelona, Spain •...Field excursion from central Chile to the Atacama De<,crt. W. Gibbons & -1. Moreno 329 Refere nee::...(SERNAGEOM J N. Chile) E. Custodio (Univ. Politecnica de Cataluna, Spain) E. Godoy (SER NAGEOMI , Chile) A...Aut6noma de Madrid, Spain) H. Miller (Ludwig-Maximilians-Un1 v. Germany) D . Morata (Universidad de Chile...University, UK) V. R amos (Univ. Buenos Aires. Argentina) A. Reed1nan (British Geological Survey) K. R |  | | Book | | GEOSCIENCE AND MAN, vol. 33 Geoscience Publications Department of Geography and Anthropology Louisiana State...published and distributed by Geoscience Publications, Department of Geography and Anthropology, Louisiana State...anthropology; ex officio, Carville Earle, chair of the Department of Geography and Anthropology; Nina S. Lam, professor...wealth : aboriginal and C1994. © Copyright 1994 Department of Geography and Anthropology, Louisi¬ ana State...depicting a means of mixing mercury with comminuted silver ore in patio process, Guanajuato, Mexico, early |  | | Report (issue) | | Centro de Investigaciones Geologicas Universidad Nacional de La Plata La Plata 1900, Argentina 265 1991...photo: View north across Lago Chungara of the Nevados de Payachata Volcanic Group at 18°S in northern Chile...Associated Basalts in the Cuyo Basin, Central Argentina: 6.0066 SROs A EE eee V. A. Ramos and S. M. Kay...Cordoén de Lila Complex, Central Andes, Northern Chile; An Ordovician Continental Volcanic Province .......Early Paleozoic Arc; The Sierra de Fiambala, Northwestern Argentina. . ectuxgeta Latte) is G. C. Grissom |
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