 | | Report (issue) | | Scalemodelecaltydomessery Clay, GRISEMSMS wate Gn GOaNe MininG Districts vce oh with RApIAL ae TE ee PRE...Detwieccnmpasinsmancialip hits mamryt cetera MINING DISTRICTS, ASSOCIATED WITH CA NTICEINES eerie...0000eeceescececscdbeen structural map, or Rico; Colorado, .district: . ..+.5. ssw Fea ive Res five voles ow...cureieunertiae ote teers 12 Plan. and section of Sunlight district, Wyoming, 16 4, tires sheik aes ........02+2...Mexico Aenea SmmSCLUCLUTAlEMaprOrsOllyentons district ColoLadoum Ole Generalusectionsthroupheoilyentonidistricte |  | | Report (issue) | | ARIZONA LODE GOLD MINES AND GOLD MINING by Eldred D. Wilson, J. B. Cunningham, and G. M. Butler Bulletin...University of Arizona Tucson ARIZONA LODE GOLD MINES AND GOLD MINING by Eldred D. Wilson, J. B. Cunningham...of Mines Bulletin No. 137, ARIZONA LODE GOLD MINES AND MINING, was originally issued in 1934 in response...1930's for authoritative information on Arizona's gold deposits. After several reprintings, the bulletin...II and, in view of the restrictions placed on gold mining during the war, it was not considered necessary |  | Markowski, Agnès, Vallance, Jean, Chiaradia, Massimo, FontbotĂŠ, LluĂŹs (2006) Mineral zoning and gold occurrence in the Fortuna skarn mine, Nambija district, Ecuador. Mineralium Deposita, 41 (4) 301-321 doi:10.1007/s00126-006-0062-x | Journal (article/letter/editorial) | | Mineral zoning and gold occurrence in the Fortuna skarn mine, Nambija district, Ecuador Received: 24...Abstract The Fortuna oxidized gold skarn deposit is located in the northern part of the Nambija gold district...which are named from north to south: Cuerpo 3, Mine 1, Mine 2, and Southern Sector. Massive skarn bodies...intrusion which crops out below the skarn bodies in Mine 2 and the Southern Sector. Endoskarn alteration...centered on two 060° trending faults in Mine 2, where the highest gold grades (5â10 g/t) were observed. It |  | Chiaradia, Massimo, Vallance, Jean, FontbotĂŠ, Lluis, Stein, Holly, Schaltegger, Urs, Coder, Joshua, Richards, Jeremy, Villeneuve, Mike, Gendall, Ian (2009) UâPb, ReâOs, and 40Ar/39Ar geochronology of the Nambija Au-skarn and Pangui porphyry Cu deposits, Ecuador: implications for the Jurassic metallogenic belt of the Northern Andes. Mineralium Deposita, 44 (4) 371-387 doi:10.1007/s00126-008-0210-6 | Journal (article/letter/editorial) | | southeastern Ecuador. Nambija has been one of the main gold-producing centers of Ecuador since the 1980s due...Pangui is a recently discovered porphyry CuâMo district. The geology of the Subandean zone in southeastern...molybdenite from veins postdating gold deposition) of the Nambija district are all indistinguishable from...indicate a Late Jurassic age for the gold mineralization. Previously, gold mineralization at Nambija was considered...Department of Geosciences, Colorado State University, Fort Collins, CO 80523-1482, USA H. Stein Geological Survey |  | | Journal (article/letter/editorial) | | 2003, pp. 1063â1067 A Special Issue Devoted to Gold Deposits in Northern Nevada: Part 2. Carlin-Type...Survey, MS-973, Federal Center, Box 25046, Denver, Colorado 80225 DAVID A. JOHN, AND TED G. THEODORE U.S...two special issues of Economic Geology devoted to gold deposits in northern Nevada. Readers interested...evolution of the region, and synoptic references on each gold deposit type are directed to the preface of the...address regional aspects important to the genesis of gold deposits in northern Nevada and five papers that |  | | Report (issue) | | Antimony Deposits of El Antimonio District Sonora, Mexico GEOLOGICAL SURVEY BULLETIN 962-B Antimony... Antimony Deposits of El Antimonio District Sonora, Mexico By DONALD E. GEOLOGICAL WHITE and SURVEY...production____________________________________-_______ Mining methods.. _________________________________________________...Rincon.________________________________________ La Fortuna-------------_----_--_-__-__---_----___.-_-__-___...___-__________________-_--.--__ Future of the district._____-_--______-______-_______--_-__-_-__-___ |  | Liu, Yuan, Li, Sheng-Rong, Santosh, M., Xu, Hong, Li, Chang-Ping, Liu, Shunhao (2019) Ore-forming physicochemical conditions of tellurium-gold deposits: A case study from the Guilaizhuang deposit, eastern North China. Geological Journal, 54 (4) 2400-2418 doi:10.1002/gj.3303 | Journal (article/letter/editorial) | | Oreâforming physicochemical conditions of telluriumâgold deposits: A case study from the Guilaizhuang deposit...Beijing, Beijing, China 3 Telluriumâgold deposits differ from normal gold mineralization in their significant...between Au and Te. The Guilaizhuang gold deposit is a major telluriumâgold deposit in the Shandong Province...contain native tellurium, Guilaizhuang Mining Company, Shandong Gold Conglomerate, Pingyi, Shandong, China...stage, goldâpolymetallic sulfide stage, goldâtelluride stage, and carbonate stage. The goldâtelluride stage |  | | 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 |  | | Journal (article/letter/editorial) | | cooke@utas.edu.au (D.R.C.) TMVC, Transforming the Mining Value Chain, an ARC Industrial Transformation Research...inclusions, which temporally co-exist with Ag-telluride inclusions and chalcopyrite. Three distinct Bi...bismuthinite hosts both Bi-tellurosulfide and Ag-telluride inclusions, whereas Ag-rich cosalite only hosts...be low in chloride-rich hydrothermal fluids, telluride and tellurosulfide inclusions are interpreted...increase with depth and not only occur as small telluride inclusions in Bi-minerals. A vertical zoning of |  | Izaguirre, Aldo, Iriondo, Alexander, Kunk, Michael J., McAleer, Ryan J., Atkinson, William W., MartĂnez-Torres, Luis M. (2017) Tectonic Framework for Late Cretaceous to Eocene Quartz-Gold Vein Mineralization from the Caborca Orogenic Gold Belt in Northwestern Mexico*. Economic Geology, 112 (6) 1509-1529 doi:10.5382/econgeo.2017.4519 | Journal (article/letter/editorial) | | Cretaceous to Eocene Quartz-Gold Vein Mineralization from the Caborca Orogenic Gold Belt in Northwestern Mexico*...20192, USA of Geological Sciences, University of Colorado at Boulder, Boulder 80309, Colorado, USA of Geology...Geology and Geology Museum, Colorado School of Mines, Golden 80401, Colorado, USA 6 Departamento de GeodinĂĄmica...Spain Abstract The Caborca orogenic gold belt is a large gold metallogenic province located in the North...North American Cordillera that hosts orogenic gold-bearing quartz veins and extends from northwestern |  | | Journal (issue) | | MARCH, 1966 Volume 19 COVER LETTERS CALENDAR LOST MINE WILDFLOWERS EXPERIENCE NATURE INDIANS TRUE OR FALSE...INDIAN POLICY INDIAN POLICY APPAREL NEWS FICTION MINING URANIUM HOBBY LAPIDARY COMMENT BOOKS POETRY Number...readers 2 March events on the desert 3 The Ledge of Gold John Nummel Lost By HAROLD O. WEIGHT 4 Flowering...Current news of desert mines 36 Progress of the mining boom 37 Gems and Minerals 40 Amateur Gem Cutter...hiked so many times between the Red Cloud and La Fortuna mines in the Yuma, Arizona, area. But, somewhere |  | Valencia-Moreno, MartĂn, CamprubĂ, Antoni, Ochoa-LandĂn, Lucas, Calmus, Thierry, MendĂvil-Quijada, HĂŠctor (2017) Latest Cretaceous-early Paleogene âboomâ of porphyry Cu mineralization associated with the Laramide magmatic arc of Mexico. Ore Geology Reviews, 81. 1113-1124 doi:10.1016/j.oregeorev.2016.05.005 | Journal (article/letter/editorial) | | trending copper belt that extends from southwestern USA to southern Mexico. The copper mineralization is...deposits are smaller (<1 Mt Cu), usually containing gold as a locally important commodity. This fact is coincident...copper belt (Mead et al., 1988), and the orogenic gold province of PT northwestern Sonora (Izaguirre...Sonora, which are the El Pilar, Los Humos, and Fortuna del Cobre. The El Pilar deposit is located ~44...2014). The westernmost and older deposit is the Fortuna de Cobre, which is located ~180 km northwest of |  | | Report (volume) | | I I ' ,I I Iacer Gold ¡Deposits 'o f Ariioi1a ' I ( t ' > '' G E 0 L. 0 G I C A L SUR V ...'.' 1 r .I ' f I ', .. I' I I Placer Gold Deposits of Arizona By MAUREEN G. JOHNSON GEOLOGICAL...----------------Introduction History of placer mining in Arizona ----------~-------'----------------Purpose...Courtland-Gleeson district (Turquoise district) --------------------3. Bisbee-Warren district (Gold Gulch placer)...-----------------------4. Huachuca placers (Hereford or Hartford district) -----------------Other d~tricb ------------- |  | | Journal (article/letter/editorial) | | Sulfidation and Gold Deposition, Twin Creeks Carlin-Type Deposit, Nevada JOHN FORTUNA,* STEPHEN E. KESLER...rocks that were sulfidized during deposition of gold in the Megapit area of the Twin Creeks Carlin-type...settings that can be favorable for formation of gold deposits formed by sulfidation. Introduction SULFIDATION...implicated in ore deposition in a number of Carlin-type gold deposits, although very little information has been...Creeks deposit, where sulfidation associated with gold deposition had been documented previously (Stenger |  | | Journal (article/letter/editorial) | | 240-m-thick quartzite unit of the Pennsylvanian Bingham Mine Formation, extends 170 m from the northeast margin...a thrust fault, below which beds of the Bingham Mine Formation are vertical and cut by abundant northeast-striking...dipping faults, dikes, and isoclinal folds, the Fortuna zone. Ore-forming hydrothermal assemblages in quartzite...kilometers of quartzite along the stock contact and the Fortuna zone and then up to the south-southeast along bedding...based on nk-cv-S equilibria Clark (1970) Undu Mine, Nukundamu, Fiji Kuroko-type massive sulfide Qtz-opal |  | Vallance, Jean, FontbotĂŠ, LluĂs, Chiaradia, Massimo, Markowski, Agnès, Schmidt, Susanne, Vennemann, Torsten (2009) Magmatic-dominated fluid evolution in the Jurassic Nambija gold skarn deposits (southeastern Ecuador) Mineralium Deposita, 44 (4) 389-413 doi:10.1007/s00126-009-0238-2 | Journal (article/letter/editorial) | | Magmatic-dominated fluid evolution in the Jurassic Nambija gold skarn deposits (southeastern Ecuador) Jean Vallance...Jurassic (approximately 145 Ma) Nambija oxidized gold skarns are hosted by the Triassic volcanosedimentary...Na-enriched zone in the volcanosedimentary unit. Gold mineralization is associated with the weakly developed...NaCl) and δ18O values between 6.2â° and 11.5â° for gold-bearing milky quartz from the retrograde stage suggest...essentially controlled by host rock compositions. Gold was precipitated at this stage as a result of cooling |  | | Report (issue) | | Metallurgist MARK EHLE, Mining Engineer J. B. TENNEY, Geologist G. R. FANSETT, Mining Engineer R. E. S. HEINEMAN...is being shown in prospecting, particularly for gold. Because of the climatic conditions that prevail...courageous prospectors that will undoubtedly seek for gold there within the next year or two. It is hoped that...___________________ _______ ___________ ___ __ ___ Colorado River________________________________ ______ ____...__________ . __ .____ _____ ______ __. General mining history_______________________ __________ ._______________ |  | | Journal (article/letter/editorial) | | 1â˘88, pp. 1583-1596 Ore Deposits at the Fresnillo Mine, Zacatecas,Mexico DELFINO C. RUVALCABA-RUIZ PasajeE...surface)level. Introduction hills, Loma de la Fortuna, Cerro Proafio, and Cerro Populo, with reliefs...veins,of which more than 30 ental (Fig. 1). The mine area,immediatelysouthand havebeenmajorore producers...Fresnilloand other baseand preciousmetal deposits. The mine maybe dividedinto three zones(Fig. 2): SantaElena...porphyritic quartz monzonitestock. Cerro Proafio district,inferring a major intrusionat depth. Stone (Fig |  | | Journal (issue) | | Kolm-Saigurn/Rauris ⢠Kupfermineralien von der Fortuna Fundgrube/Erzgebirge ⢠Der Blei-Zink-Bergbau bei...bei StaĂfurt Sekundäre Ku_pfermineralien von der Fortuna-Fundg_rube bei Seiffen im Erzgebi!:H_e Interessanter...Faberge-Ausstellungen diverser Einlieferer aus den USA (leider wurde auf Beleuchtung wegen angeblicher ...Schau wirklich weltbester Stufen von Diamanten, Gold, Silber und Kupfer zu vereinigen. Gratulation! Da... Oder die komplette Minenproduktion der Rogerly Mine aus England - dunkelgrĂźner Fluorit, saubere Zwillinge |  | | Report (issue) | | . . . . . . . . . . . . . . . . . 1 Chapter I. Mining Districts of Counties and the State of Utah. .... . . . . . . . . . . . . . . . . 1 Chapter II. Mining Districts of Utah . . . . . . . . . . . . . . ...increasing both because of renewed activity in old mining camps and because of Utahns and tourists who seek...selected metallic minerals of each county. CHAPTER I MINING DISTRICTS OF COUNTIES AND THE STATE OF UTAH The...publications may-be inter-changed. In Chapter I mining districts are listed alphabetically both for each |  | | Journal (article/letter/editorial) | | Environmental Sciences, New Mexico Institute of Mining and Technology, 801 Leroy, Socorro, New Mexico...in northeast (NE)-trending faults during Eocene gold mineralization at the Getchell and Twin Creeks deposits...fluid inclusions in fluorite from the Getchell mine is an artifact of boiling and a depth of â¤980 m...crystalline white-quartz vein in the DZ Fault, Twin Creeks mine contains cogenetic liquid-rich and vapor-rich fluid...Intergrown with the quartz is 42 Ma adularia and native gold that occurs both as disseminations within and along |  | Skirrow, R.G, Camacho, A, Lyons, P, Pieters, P.E, Sims, J.P, Stuart-Smith, P.G, MirĂł, R (2000) Metallogeny of the southern Sierras Pampeanas, Argentina: geological, 40Arâ39Ar dating and stable isotope evidence for Devonian Au, AgâPbâZn and W ore formation. Ore Geology Reviews, 17 (1) 39-81 doi:10.1016/s0169-1368(00)00004-4 | Journal (article/letter/editorial) | | AgâPbâZn sulfideâquartz veining in the El Guaico district Ĺ˝386 " 4 Ma, sericite., and W-bearing quartz vein...the geology of principal deposits in all major mining districts of the project areas, and were supported...which to reassess the metallogeny of this historic mining region. 2. Geological setting and tectono-magmatic...Duraznito WâAu; Ĺ˝5. Las Aguilas NiâCu; Ĺ˝6. La Carolina district AuâAg; Ĺ˝7. San Francisco del Monte de Oro. 44...mineralization in the southern Sierras Pampeanas. 4. Lode gold mineralization Quartz vein systems hosting Au " |  | | Journal (article/letter/editorial) | | that the majority of large mineral deposits and mining districts are situated in the outcrops of these...available radiometric ages of mineral deposits. Sixteen mining districts in Chile, and 24 in Argentina, were attributed...to the seismically active fracture zones. Major mining districts and individual large mineral deposits...relatively restricted domains of the Earth's crust. The mining districts with dated mineral deposits are arranged...seismic data the hypogene polymetallic, copper, gold, lead, silver, tungsten, molybdenum and bismuth |  | | Report (issue) | | Refereaces cited Appendix A - 2 7 Table Table 1. District descriptions Preliminary map of the resource...Range Province. These areas include past or present mining and prospecting activity as well as areas of potential...map are not legal mining district boundaries and may include more than one district as well as adjacent...selected references. The location of each individual mining site was obtained from the U.S. Geological Survey's...this file, the metallic and some no nine tal lie mining sites for the western half of Utah were plotted |  | | Journal (article/letter/editorial) | | size, that display rocks, minerals, fossils, or mining memorabilia and equipment. It was interesting to... Displays feature early mining equipment, rocks, minerals, fossils, and gold-rush memorabilia. Arcata:...vertebrate, invertebrate, and plant fossils. Auburn: Gold Country Museum, 1273 High St., on the fairgrounds...9161889-6500. Displays include rocks, minerals, and mining artifacts. Features include a stamp mill and a...small creek where visitors can try their hands at gold panning. Avalon: Catalina Island Museum Society |
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