 | Arancibia, Gloria, Matthews, Stephen J., Cornejo, Paula, de Arce, Carlos Pérez, Zuluaga, José I., Kasaneva, Stabro (2006) 40Ar/39Ar and K–Ar geochronology of magmatic and hydrothermal events in a classic low-suphidation epithermal bonanza deposit: El Peñon, northern Chile. Mineralium Deposita, 41 (5) 505-516 doi:10.1007/s00126-006-0078-2 | Journal (article/letter/editorial) | | low-suphidation epithermal bonanza deposit: El Peñon, northern Chile Received: 20 December 2005 / Accepted:...Springer-Verlag 2006 Abstract The epithermal El Peñon gold–silver deposit consists of quartz–adularia...the Paleocene–Lower Eocene Au–Ag belt of northern Chile. Detailed K–Ar and 40Ar/39Ar geochronology on volcano–...The Paleocene to Lower Eocene magmatism in the El Peñon area is confined to a rhomb-shaped basin, which...geochronology of hydrothermal adularia from the El Peñon deposit yields ages between 51.0±0.6 and 53.1±0 |  | | Journal (article/letter/editorial) | | AND SUPERGENE WEATHERING IN THE EL PEÑÓN DISTRICT, NORTHERN CHILE IAN WARREN,† Yamana Gold, 9670 Gateway...Peñón epithermal gold-silver deposit, Region II, Chile, comprises multiple epithermal veins, which contain...in the Paleocene metallogenic belt of northern Chile. Quartz-adularia-carbonate veins are hosted in Paleocene...composition intrusive rocks also occur in the district and locally preserve alteration associated with...deposit. Timing of hydrothermal activity in the district and age and duration of weathering are constrained |  | Poblete, J. A., Bissig, T., Mortensen, J. K., Gabites, J., Friedman, R., Rodriguez, M. (2014) The Cerro Bayo District, Chilean Patagonia: Late Jurassic to Cretaceous Magmatism and Protracted History of Epithermal Ag-Au Mineralization. Economic Geology, 109 (2) 487-502 doi:10.2113/econgeo.109.2.487 | Journal (article/letter/editorial) | | Economic Geology, v. 109, pp. 487–502 The Cerro Bayo District, Chilean Patagonia: Late Jurassic to Cretaceous...Vitacura, Santiago, Chile Abstract The Cerro Bayo low sulfidation epithermal district is located in the...tip of the Deseado Massif epithermal silver-gold province. Mineralization is hosted in the mainly rhyolitic...and dikes, including Cerro Bayo proper, aligned on the prominent N-S–striking Cerro Bayo fault and intruding...zircon) are present in the western part of the district at Laguna Verde. Silver and gold mineralization |  | | Journal (article/letter/editorial) | | LONG-LIVED HYDROTHERMAL SYSTEM IN THE FRESNILLO SILVER DISTRICT, MEXICO: CONSTRAINTS FROM 40Ar/39Ar GEOCHRONOLOGY...Environmental Sciences Department, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801 2New...and Mineral Resources, New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, New Mexico...and dikes are the youngest igneous rocks in the district. Spatial association of Tertiary volcanic rocks...sulfate alteration, and epithermal veins makes the district ideal for evaluating the temporal relations between |  | Arribas, A., Arribas, I., Draper, G., Hall, C., Kesler, S. E., McEwan, C., Muntean, J. L. (2011) 40Ar/39Ar DATING OF ALUNITE FROM THE PUEBLO VIEJO GOLD-SILVER DISTRICT, DOMINICAN REPUBLIC. Economic Geology, 106 (6) 1059-1070 doi:10.2113/econgeo.106.6.1059 | Journal (article/letter/editorial) | | DATING OF ALUNITE FROM THE PUEBLO VIEJO GOLD-SILVER DISTRICT, DOMINICAN REPUBLIC* ANTONIO ARRIBAS,1,** ISABEL...MCEWAN,5 AND JOHN L. MUNTEAN6 1 Newmont 2 School Mining Corporation, 1332 Forest Trails Drive, Castle Rock...Moore and Monte Negro deposits in the Pueblo Viejo district, as well as from a newly discovered alunite-bearing...controversy about the age of the Pueblo Viejo district in the Dominican Republic (Sillitoe et al., 2006...of the controversy are those who consider the district to be the product of a Late Cretaceous magmatic-hydrothermal |  | 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) | | Institute of Geological Survey, Fuzhou 350013, China Mining Group Co., Ltd., Shanghang 364200, China Abstract...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...(2) alunite-digenite veins and (3) banded alunite-pyrite veins. Their field occurrences and S isotope features...alunite-digenite veins, whereas the origin of alunite-pyrite veins is likely to be related to magmatic steam |  | | Book | | ---- |----：-（ |- % A DICTIONARY OF SPANISH MINING TERMIS MININAND METALURCICALPUBLICATIONS Geology...Studies. Mining Geology . . Prospecting for Minerals . Ore and Stone Mining. . Elements of Mining . . Coal...Coal Mining . Practical Coal Mining . Elementary 39 Elect. Colliery Practice . Mine-Surveying . . Mine...Mine Air, Investigation of. Mining Law . . Blasting and Explosives . Testing Explosives . Shaft Sinking...Sinking . 39 - e - - - º - Mining - - . - *3 - - - 7º . - - $10.00 - H. W. HUGHES, F |  | Castor, S. B., Boden, D. R., Henry, C. D., Cline, J. S., Hofstra, A. H., McIntosh, W. C., Tosdal, R. M., Wooden, J. P. (2003) The Tuscarora Au-Ag District: Eocene Volcanic-Hosted EpithermalDeposits in the Carlin Gold Region, Nevada. Economic Geology, 98 (2) 339-366 doi:10.2113/gsecongeo.98.2.339 | Journal (article/letter/editorial) | | Vol. 98, 2003, pp. 339–366 The Tuscarora Au-Ag District: Eocene Volcanic-Hosted Epithermal Deposits in...Mexico Bureau of Geology, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801 RICHARD... California 94025 Abstract The Tuscarora mining district contains the oldest and the only productive...productive Eocene epithermal deposits in Nevada. The district is a particularly clear example of association of... and Carlin-type deposits may lie beneath the district. Introduction 120° Period Source Au (oz) |  | Witt, W. K., Hagemann, S. G., Villanes, C., Vennemann, T., Zwingmann, H., Laukamp, C., Spangenberg, J. E. (2016) Multiple Gold Mineralizing Styles in the Northern Pataz District, Peru. Economic Geology, 111 (2) 355-394 doi:10.2113/econgeo.111.2.355 | Journal (article/letter/editorial) | | Gold Mineralizing Styles in the Northern Pataz District, Peru* W. K. Witt,1 S. G. Hagemann,1 C. Villanes...Abstract Gold production from the northern Pataz district in the eastern Andean Cordillera of Peru has been...batholith, in the Vijus-Santa Filomena area of the district. Both are located within a central horst; similar...hydrothermal alteration in the northern Pataz district. Introduction The Pataz-Parcoy goldfields are...main sites of hydrothermal activity in the Pataz district: (1) batholith-hosted veins and related alteration |  | | Journal (article/letter/editorial) | | little. In the region of Hermosillo, Sonora, in the district of Moctezuma, granite, crossed by dikes of pegmatite...pegmatite, occupies great tracts of country. In the district of Altar syenites and diorites replace the granite...distribution of these rocks. Each metalliferous district presents in the mass of its rocks a similar series...rock which occurs at various points in the mining district of Parral, in the state of Chihuahua. It is...naked eye and in very variable quantity, grains of pyrite disseminated in the paste. In the region of Guanacevi |  | | Book (edition) | | granular y cristales tabulares gruesos. Color blanco grisáceo, raya gris, brillo metálico. Clivaje {0001}...o complejas. Propiedades ópticas: opaco, color blanco, R1-R2=74,5-78,0% (540nm), pleocroismo y anisotropía...Propiedades físicas: granos redondeados. Color blanco grisáceo, se empaña a castaño, brillo metálico...Fuertemente magnético. Propiedades ópticas: opaco, color blanco, R=63,1 (540 nm), isótropo. Análisis químicos:...Neuquén (6). Se aloja en el yeso de la Fm. Auquilco. Cerro Partido, Neuquén (6). Se aloja en el yeso de la |  | Them, T.R., Jagoe, C.H., Caruthers, A.H., Gill, B.C., Grasby, S.E., Gröcke, D.R., Yin, R., Owens, J.D. (2019) Terrestrial sources as the primary delivery mechanism of mercury to the oceans across the Toarcian Oceanic Anoxic Event (Early Jurassic) Earth and Planetary Science Letters, 507. 62-72 doi:10.1016/j.epsl.2018.11.029 | Journal (article/letter/editorial) | | eruptive phase of the Karoo–Ferrar large igneous province, which caused a subsequent cascade of environmental...deoxygenation (e.g., Them et al., 2018), widespread pyrite burial due to expansion of euxinic (anoxic and...This sample, however, is associated with elevated pyrite contents and is likely controlled by local Hg cycling...the N-CIE interval is associated with elevated pyrite contents (see discussion in Main Texas and Supplementary...(Mochras Borehole, Bornholm, Peniche, Arroyo Lapa, El Peñon, East Tributary; while Yorkshire is the exception |  | | Book | | Di Wu Mine Waste Management in China: Recent Development Mine Waste Management in China: Recent Development...Wu Mine Waste Management in China: Recent Development 123 Di Wu School of Energy and Mining Engineering...Engineering China University of Mining and Technology-Beijing Beijing, China ISBN 978-981-32-9215-4 ISBN...Yue Qi Young Scholar Project, China University of Mining and Technology, Beijing; • National Key Technology...Laboratory for Coal Resources & Safe Mining, China University of Mining & Technology (No. SKLCRSM16KFC04); |  | | Book | | Holmes wrote, The antiquarian literature of the province is extremely meager, being conf ined to brief...discovered that at some period of the past the province was thickly populated, and by races possessed...Cooke and colleagues’ (2000) recent f ieldwork at Cerro Juan Díaz, where a number of different vectors—precious...Fonseca Zamora 1979; 1981) and Rivas (Quilter and Blanco 1995), await future archaeological study in Costa...archaeologist. At the Rivas site, in Costa Rica, Aida Blanco and I excavated two low-status cemeteries that |  | Simmons, Stuart F., Brown, Kevin L., Tutolo, Benjamin M. (2016) Hydrothermal Transport of Ag, Au, Cu, Pb, Te, Zn, and Other Metals and Metalloids in New Zealand Geothermal Systems: Spatial Patterns, Fluid-Mineral Equilibria, and Implications for Epithermal Mineralization. Economic Geology, 111 (3) 589-618 doi:10.2113/econgeo.111.3.589 | Journal (article/letter/editorial) | | the only two involving a second mineral phase, pyrite, which is a ubiquitous mineral in hydrothermally...Gold-Au Hematite-Fe2O3 Hessite Ag2Te Magnetite-Fe3O4 Pyrite-FeS2 Pyrrhotite-FeS Sphalerite-ZnS Tellurium-Te...Rs, the rock buffer is represented by fayalite-pyrite-hematite-quartz equilibrium (Giggenbach, 1997;...2 Arsenopyrite + 2H2S(aq) + 6H2O = 5H2(aq) + 2 Pyrite + 2As(OH)3°(aq) Calaverite 2 Calaverite + 3H2(aq)...Chalcopyrite + 2H2S(aq) = H2(aq) + 2CuHS(aq) + 2 Pyrite Gold 2 Gold + 2H2S(aq) = H2(aq) + 2AuHS(aq) Galena |  | | Journal (article/letter/editorial) | | sporadically found framboidal, ~2 mm size sulfide (pyrite?) aggregates on open fractures are (e.g., at a...tunnel construction in mountain regions and deep mining operations (e.g., Brown and Trollope 1967), and...High explosive VZ-#10.929 EP7: K/T boundary, El Peñon, northeast Mexico 34 4 9.5 Composition B 39 |  | | Report (issue) | | Mohabey 9. Vertebrate fauna from the Deccan volcanic province: Response to volcanic activity . . . . . . . ...12. Volcanism of the Central Atlantic magmatic province as the trigger of environmental and biotic changes...reversals related to the Central Atlantic magmatic province caused the end-Triassic biotic crisis—Evidence...458, and 465) devoted to impacts. Large igneous province volcanism, the other catastrophe related to mass...the interplanetary environment and large igneous province eruptions and their environmental effects, such |  | | Report (issue) | | Specimen of high-grade gold in quartz from the Oriental mine, Alleghany, California. Harold and Erica Van Pelt...topical investigations of 10 W. R. Dickinson mining districts, or for regional reconnaissance intended...subsurface was then almost nil except in local mining districts, and there our information extended to...time-honored professions such as petroleum and mining geology have been guided into unfamiliar directions...It may have been discovered before; I boast it is mine. —John of Salisbury The Entheticus, thirteenth century |  | | Report (issue) | | sediments containing mineral phases such as apatite and pyrite. Additional evidence in favor of marine conditions...section (Figs. 11 and 12, Domack et al., 1993). Pyrite nodules and dropstones are abundant in the tasmanite...Formation, Sierra de la Ventana, Southern Buenos Aires Province: International Gondwana Symposium, 1st (Mar del...(Late Carboniferous [Pennsylvanian] of San Juan Province, Argentina): The role of catastrophic sedimentation:...postglacial transgression in the Paganzo and Río Blanco Basins (northwestern Argentina): Facies and stratigraphic |  | | Book | | the Moon were of impact origin (Gilbert 1893). A mining engineer, Daniel Moreau Barringer, became interested...at the present time, it does not seem feasible to mine them commercially because of the lack of infrastructure...boundary spherules in the Western Interior, USA), pyrite (e.g., K-T boundary spherules and upper Eocene...Ejecta Layers Fig. 3.20 Hematite concretions and pyrite framboids. a Millimeter-size hematite concretions...image of a polished section of a mudstone showing pyrite framboids (light gray circular regions). The mudstone |
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