 | | 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) | | Cumberland, gilbertitc, 6o6. George and Charlotte mine, Tavistock, Devon, 'tavistockite', [ 23. Grassington... INDEX Drakewalls mine, Gunnislake, posnjakite, 740. Hingston Down Consols" mine, arthurite, 52o. Lee...(Espafia) Cabo Ortegal, Galicia, omphacite, 6L CarmeBta mine, Caceres, montcbrasite, 4t4. Santander, blende,...Kazakhstan, calcite, 929. Tetyukhinsky, Maritime Province, calcite, 929. INDEX 969 Azerbaidzhan Dashkesan...Zaglik, alunite, IZ8. Iran Sar Cheshmeh, Kerman province, cuprian sericite, 945. Israel Golani, basalt |  | | Journal (article/letter/editorial) | | Vol. 86, 1991, pp. 1187-1205 Gold Metallogeny of Chile RICHARD an Introduction H. SILLITOE 27 WestHill...sulfate)epithermaldepositsare locatedaboveand low sulfidation(adularia-sericite)epithermaland contactmetasomaticdepo...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) | | cell-dimensions, 216; Rockall, opt., cell-dimensions, 216. Adularia, New Zealand, hydrothermal, anal., opt., genesis...(S. M.), see QAISER(M. A.), 735. Alaer6n mine, Copiap6, Chile, arsenolamprite, 732. Ala di Stura, Piemonte...distinction from montebrasite, 4r4. Amblygonite mine, Caceres, Spain, montebrasite, 414. Amelia County... d2o T, 489. Arsenolamprite, Chile, anal., X-ray, 732. Arthurite, Chile, 519; Cornwall, anal., 52o. Asahine...from Mull and Morvern, 934. Bala Durga Gourishankar mine, Tummalatalupur, Nellore, India, microcline perthite |  | | Journal (article/letter/editorial) | | rhyolitic ash-flow tuffs, dikes, and domes, with adularia-sericite alteration accompanied by epithermal...alteration, and indicate that rhyolitic magmatism and adularia-sericite alteration with associated base-metal...andesitic to dacitic intrusions, and low-sulfidation (adularia-sericite) Au deposits with andesitic and rhyolitic...1995a; Hedenquist et al., 1998) and Cobre Potrerillos, Chile (Marsh et al., 1998). In these and other...contrast, it has been more difficult to relate adularia-sericite deposits to specific magmas because they |  | | Journal (article/letter/editorial) | | formerly known as Catavi, the largest tin-producing mine in Bolivia, numerous veins have developed in the...from the Grande Vein at the –30 m level, San José mine. Specimen No. 2 contains 2M 1 sericite with small...drift 20 m above the adit of 190 m level, Morococala mine. The host rock is quartzite of the Cancañiri Formation...rite ore of the Chica Vein, 170 m adit, Bolivar mine, Avicaya area. The X-ray powder diffraction peaks...entrance of the Loa adit, Minchin section, Avicaya mine (see the photograph of Fig. 25-F; Sugaki et al. |  | | Journal (article/letter/editorial) | | preferred age of 32.65 ± 0.05 Ma is suggested. Two adularia samples from the Jarillas vein give statistically...identical ages of 29.75 ± 0.12 and 29.68 ± 0.10 Ma. Adularia from Valdecañas vein shows a climbing age spectrum...30.56 ± 0.04 and 31.03 ± 0.05 Ma. Alunite and adularia ages suggest that acid sulfate alteration and...located within the Mesa Central physiographic province, which is an elevated plateau made up of marine...western portions of the Mesa Central physiographic province (Fig. 1). The Guerrero terrane forms part of a |  | | Report (issue) | | Carbonate-hosted gold 79 Epithermal gold, quartz-adularia type 82 Epithermal gold, quartz-alunite type...Name Country Ace of Spades Adobe Canyon Gp. Alice Mine Allan (Johnson) Alta Hill Althouse Alyce and Blue...Chrome, etc. Buttercup Chrome Camden Mine Camptonvilie area Castro Mine Cattle Springs Cavyell Horse C (continued...Cleopatra Clover Leaf Codd Prospect Coggins Col lard Mine Commander Coon Mt. Nos. 1-3 Copper Creek (Low Divide)...Fourth of July French Hill Friday Gallagher Gardner Mine Gas Canyon Geach Bibsonville Glory Ho Griffin Chromite |  | | Journal (article/letter/editorial) | | the porphyry copper epithermal system at Potrerillos, Chile; Bendezú and Fontboté, 2002, for multiple...age is indistinguishable from that of the early adularia (Bethke et al., 1976). The lower margin of economic...Ma Event Mining, accelerated oxidation, but no mine fires; most samples for this study were taken from...near Creede ores Mineralization, K/Ar ages on adularia and sericite (Bethke et al., 1976; adjusted by...(earliest) Mostly quartz; a little adularia, sulfide and chalcedony Adularia age of 25.3 Ma (Bethke et al |  | | Report (issue) | | Santiago, Chile. Applications of the methods described in this report use examples from Chile but the general...operations that do not use formal accounting procedures (Chile); 2) a gross income of less than 20 million pesos...been developed based on the number of operators per mine from one or two persons to as many as 100 persons...more than 400 persons in an openpit mine or 150 in an underground mine (Meyer, 1980). The contradict!ve...exhibit various types of changes in grades during mine life some which are due to economics of scale. The |  | | 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...38-2353.00 1238 Au PORPHYRY,MARICUNGA BELT, CHILE 1239 and west of Marte which compriseadvancedargillic...central and northern Chile. The the Atacama desert. Maricungabelt in northern Chile is one of the most...north-southelon- viouslyin the Andean Cordillera of Chile. gate area, roughly200 X 50 km in extent,between |  | Vikre, P. G., Graybeal, F. T., Fleck, R. J., Barton, M. D., Seedorff, E. (2014) Succession of Laramide Magmatic and Magmatic-Hydrothermal Events in the Patagonia Mountains, Santa Cruz County, Arizona. Economic Geology, 109 (6) 1667-1704 doi:10.2113/econgeo.109.6.1667 | Journal (article/letter/editorial) | | deposits in Paleozoic carbonate rocks at the Flux mine (~71 Ma). An event at 65 to 62 Ma is marked by emplacement...a Cu-Mo breccia deposit at Red Hill (Four Metals mine), both of which formed in large-volume quartz monzonite...porphyry Cu province (e.g., Titley, 1982; Leveille and Stegen, 2012), and segments of the province contain...volcanic rocks. Hydrothermal biotite, muscovite, adularia, and alunite were dated by the 40Ar/39Ar method...World’s Fair Trench Hermosa Hardshell mine and resource Three R mine and resource European Ventura Thunder |  | | Journal (issue) | | glory hole, B & B mine, Esmeralda County CALIFORNIA: burnt ore dump, Oceanic mine, San Luis Obispo County...prospect, “several hundred feet” north of the Boss mine, Goodsprings district, Clark County Vegasite was...the east ore zone of the Carlin mine, Eureka County: 1. bench 6,450, mine coordinates 23,000N, 19,800E;...800E; and 2. bench 6,350, mine coordinates 23,850N, 22,700E. 55 Weissbergite occurs as gray metallic grains...(1973) Preliminary geologic map of the Carlin Gold Mine, Eureka County, Nevada. U.S.G.S. Miscellaneous Field |  | | Catalog/List | | 5x2x5/8", £8.75 A/4. ADAMITE. Kameriza Central Mine, Laurium, Attica, Greece. A sparkling lime-green...coloured earlier formation. 2x1.5x1.25", £24.00 ADULARIA/CHLORITE. St Gothard, Ticino, Switzerland. A matrix-free...inclusions. several, 1.5x1.25x1 ”, £8.50 i", A/7. ADULARIA/SPHENE/EPIDOTE/CHLORITE/ALBITE. St Gothard. Ticino...transparent to pearly, translucent twinned and untwinned Adularia with an interstitial growth of gemmy, green prismatic...Calcite crystals. 5x3.5x1.25", £9.50. 3. ANATASE/ADULARIA. Cavagnoli-Glacier, Ticino, Switzerland. A Lustrous |  | | Journal (article/letter/editorial) | | Colorado Porphyry Copper Deposit, I Región, Northern Chile FARHAD BOUZARI† AND ALAN H. CLARK Department of...the initiation of the Incaic orogeny in northern Chile. An age of 35.26 ± 0.68 (2σ) Ma for alunite associated...Evidence from Cerro Colorado and elsewhere in northern Chile (e.g., Spence and Angelina) confirms that Paleocene...Cenozoic supergene metallogenic epoch in northern Chile, ca. 20 or even 30 m.y. in duration, which attained...Cenozoic copper deposits and prospects in northern Chile and southern Peru cited in the text. The easterly |  | | Journal (article/letter/editorial) | | host rocks with an assemblage of opal, quartz and adularia along with minor calcite and epidote close to...mesothermal Au veins. Alteration consists of quartz, adularia, chlorite, sericite, calcite, pyrite and clay...deposit occurs in an F-rich silicic large igneous province (Mc Phie et al., 2011). IOCG deposits in the Andean...the Mesozoic Patagonian Silicic Large Igneous Province that resulted from the crustal melting linked...chalcedony, quartz and minor calcite; locally, barite, adularia, zeolites, rodocrosite and scarce sulfides (pyrite |  | | Report (chapter) | | dating on samples from porphyry deposits in Iran, Chile and Indonesia in order to investigate their genesis...world’s largest Cu-Mo porphyry deposit, Chuquicamata, Chile. We present new thermochronology data (Table 3,...intrusive. Selected porphyry deposits Chuquicamata, Chile. The thermal history of the world’s largest porphyry...71% Cu and 0.01% Mo) at Chuquicamata, northern Chile has been studied extensively and from various perspectives...strike-slip feature that cuts through Northern Chile. The vertical displacement along the fault was determined |  | | Journal (article/letter/editorial) | | Marsh et al. (1997) showed for the Potrerillos district (Chile) that hydrothermal activity in porphyry-related...and fluorite veins, surrounded by a carbonate, adularia and sericite alteration zone. The spatial association...alteration. Coherent andesite taken from the Chelopech mine (Figs. 2 and 6a) gives an emplacement age of 91...volcanic and subvolcanic rocks outside of the Chelopech mine and the ages range from 92.22 to 91.3 Ma (Fig. 6a)...super-giant Chuquicamata copper deposit of northern Chile by ELA-ICP-MS and SHRIMP. Geology 29, 383 – 386 |  | Hodges, C.A., Cox, D.P., Singer, D.A., Case, J.E., Berger, B.R., Albers, J.P. (1984) U.S. Geological Survey-INGEOMINAS mineral resource assessment of Colombia. Open-File Report Vol. 1984 (84-345) US Geological Survey doi:10.3133/ofr84345 | Report (issue) | | lead-zinc deposits (4.8) 28 Epithermal gold, quartz-adularia type (5.4) 30 Hot springs gold-silver deposits...lead-zinc deposits 27 13. Epithermal gold, quartz-adularia type 29 14. Hot springs gold-silver deposits...Epithermal gold, quartz-adularia type. 29 5.4 EPITHERMAL GOLD, QUARTZ-ADULARIA TYPE Domains 3, 5, 7...amethystine quartz and adularia). Wallrock alteration consists mainly of illite, adularia, chlorite, epidote...Characteristics Fifty percent of epithermal gold-quartz-adularia deposits contain 0.7 million tonnes or more; ten |  | | Journal (article/letter/editorial) | | be montmorillonite, mordenire,wairakite,albite,adularia,andhydromica. The isotopiccomposition of thehotwaterreflects...Wedepohl agreeswith Kraume, the geologistat the mine, in assumingsubmarinehotspringsas the local sourcefor...Anacondageologists at the porphyrycopperdepositat E1 Salvador,Chile. Systematiccopperand iron sulfideassemblages are...grosserfeaturesof whichcanbe tracedthroughoutthe mine. Studiesof fluid inclusioncompositions and homogenization..., AndesCopperMining Company,E1 Salvador(Potrerillos), Chile, SouthAmerica JAHNS, Prof. R. H., Divisionof |  | | 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...o 28 Copiapo Peru-Chile 30 Bajo de la Alumbrera (Late Miocene) Arg Chile ent ina 25 Alteration |  | | 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 |  | | Report (chapter) | | magnetite + plagioclase fragments. Location: Cohnenar Mine, Jerez de los Caballeros. (d) Tension gashes in...by late pyrite and chalcopyrite. Location: Cala Mine, Cala. (e) Magmatic breccia with fragments of pyroxenite...of more finegrained sulphides. Location: Tharsis Mine, Iberian Pyrite Belt. of the structure promoted...(Fig. 4c). A special case is found at the Monchi Mine (Fig. 1) where an unusual Brich mineral assemblage...formation is evident again in the Cala Mine, the most important magnetite mine in the region, which also shows |  | | Report (issue) | | la Universidad de la Universidad de Concepcion, Chile, Miguel J. Haller de la Universidad de la Patagonia...EJEMPLOS High Plateau, Del Norte County, USCA Goto Mine, Luzon, PLPN (Wells y otroa, 1946) (LeBlano y Violette...Nombre Ace of Spades Adobe Canyon Gp. Ajax Alice Mine Allan (Johnson) Alta Hill Althouse Alyce and Blue...etc Buttercup Chrome Camden Mine Campbell Camptonville area Castro Mine Cattle Springs Cavyell Horse...Cleopatra Clover Leaf Codd Prospect Coggins Collard Mine Commander Coon Mt. Nos. 1-3 Copper Creek (Low Divide) |  | | Report (volume) | | based on considerations that extend far beyond the mine itself, in some instances relating to the overall...subject, as in a scale model of the workings of a mine, to a unifying concept that explains or describes...government believed might someday be economic ta mine. Stratiform deposits of large areal extent, such...EXAMPLES High Plateau, Del Norte Cty, USCA Coto Mine, Luzon, PLPN (Wells and others, 1946) (LeBlanc...DEPOSITS Name Ace of Spades Adobe Canyon Gp. Ajax Alice Mine Allan (Johnson) Alta Hill Althouse Alyce and Blue |
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