 | | Report (volume) | | Intrusive Rocks ana Associated Ore Deposits in the Colorado Mineral Belt U.S. GEOLOGICAL SURVEY BULLETIN...University Dr. LAKEWOOD, Colorado Federal Center, Bldg. 810 MENLO PARK, California Bldg. 3, Rm. 3128, 345...Intrusive Rocks and Associated Ore Deposits in the Colorado Mineral Belt By Charles G. Cunningham, Charles...understand the temporal and spatial evolution of the Colorado Mineral Belt UNITED STATES GOVERNMENT PRINTING...intrusive rocks and associated ore deposits in the Colorado Mineral Belt / by Charles G. Cunningham ... [et |  | | Report (volume) | | Potential and Geology of the San Juan National Forest, Colorado Edited by Richard E. Van Loenen and Anthony B...potential and geology of the San Juan National Forest, Colorado I edited by Richard E. Van Loenen and Anthony...: I 19.3.2127 1. Mines and mineral resources--Colorado-San Juan National Forest. I. Van Loenen, Richard...famous mining districts, such as those at Rico and La Plata, but there is no significant mining being...Foley, and Anthony B. Gibbons Exploration and Mining History ...................................... |  | | Journal (article/letter/editorial) | | according (1984) ascribedto the syeniticAllard stock,which is to Macdonald(1988), form in three fundamentalen-...Ir • 1 <2 1 <2 1 <2 1 <2 <2 <2 <2 <2 <3 La 40 <2 <2 11 Li 10 10 10 10 Lu <0.4 <0...2 to 480 ppb, goldfrom enriched zone rich in covellite and chalcopyrite, 250 to 7,200 ppb and silver...at the Allard stock, La Plata normalporphyriescannotbe consideredaseconomic Mountains,Colorado(Werle et...eparedto permitlocalization al. (1984), at the Allard stockandalsoby the authors of quartzveins,sili |  | Wang, Minfang, Gutzmer, Jens, Michalak, Przemyslaw P., Guo, Xiaonan, Xiao, Fan, Wang, Wei, Liu, Kun (2014) PGE geochemistry of the Fengshan porphyry–skarn Cu–Mo deposit, Hubei Province, Eastern China. Ore Geology Reviews, 56. 1-12 doi:10.1016/j.oregeorev.2013.07.006 | Journal (article/letter/editorial) | | located in the western part of the Jiurui Cu–Au–Mo district in the Late Mesozoic Middle–Lower Yangtze River...associated with the Fengshan granodiorite porphyry stock (149–138 Ma), where two types of ore bodies (porphyry...world's production currently stems from only five mining districts linked to five intrusive complexes: the...Dyke in Zimbabwe, the Stillwater deposit in the USA, the Norilsk-Talnakh deposit in Russia, the Sudbury...Mountain, Galore Creek), Allard Stock, La Plana Mountains and Copper King Mine in the USA, Skouries porphyry |  | Pašava, Jan, Vymazalová, Anna, Košler, Jan, Koneev, Rustam I., Jukov, Alexander V., Khalmatov, Rustam A. (2010) Platinum-group elements in ores from the Kalmakyr porphyry Cu–Au–Mo deposit, Uzbekistan: bulk geochemical and laser ablation ICP-MS data. Mineralium Deposita, 45 (5) 411-418 doi:10.1007/s00126-010-0286-7 | Journal (article/letter/editorial) | | Cordillera of British Columbia; Allard Stock, La Plata Mountains and Copper King in USA; Majdanpek, Veliki Krivelj...field and is a part of the Chatkal–Kurama ore district in eastern Uzbekistan (Fig. 2). The Cu mineralization...1931 to 1941 and between 1947–1951, and open pit mining commenced at Kalmakyr in 1954. Additional exploration...part of the zones dominated by chalcocite and covellite, as they may exhibit high Au contents and negligible...epithermal deposits in the Chatkal–Kurama ore district in Uzbekistan also show a strong Ir and Pd depletion |  | | Journal (article/letter/editorial) | | AlkalineRock-RelatedMineralizationin the Nogal Mining District, Lincoln County, New Mexico ScoTt E. DOUGLASS AND ANDREW...different formsof hydrothermalalterationoccur in the district. The first is the regionalpropylitic alterationof...renewed interest in the area with several ple Creek, Colorado,and Zortman-Landusky, Mon- sitesbeingtargetedfor...1991; MiningRecord,199'2).Previousstudies Lincoln County, New Mexico, hosts 11 alkaline of the area have...igneouscenterswhosecharacteristics and mineral the district (Lindgrenet al., 1910; Griswold, 1959; potentialare |  | | Book | | 310 Pillsbury Drive S. E. Minneapolis, MN 55455, USA Volumes 1 to 9 in this series appeared under the...are of considerable aid to the exploration and mining geologist in areas of known mineralization, but...advanced undergraduate and graduate levels, and to mining and exploration geologists. lowe no small debt...3 Limestone Replacement Deposits of Leadville, Colorado ..................... . 2.1.4 Discussion and Suggestions.................. . 83 The Fresnillo Ag-Pb-Zn District, Zacatecas, Mexico .......................... |  | LeFort, D., Hanley, J., Guillong, M. (2011) Subepithermal Au-Pd Mineralization Associated with an Alkalic Porphyry Cu-Au Deposit, Mount Milligan, Quesnel Terrane, British Columbia, Canada. Economic Geology, 106 (5) 781-808 doi:10.2113/econgeo.106.5.781 | Journal (article/letter/editorial) | | ranges in salinity and homogenization temperature. LA-ICP-MS analyses indicate that the fluids were highly...porphyry of OK Tedi in Papua New Guinea and the Cadia district porphyries in Australia (Bamford, 1972; Wilson...is dated at 183 ± 4 Ma, excluding the Heidi Lake stock (Mortensen et al., 1995; Nelson and Bellefontaine...alteration studied here consist of sulfides (covellite, chalcocite, and djurleite), oxides (cuprite and...separate resource but would be recovered during mining of the porphyry stage mineralization, which they |  | | Conference Proceedings (Volume) | | very north of Sweden. Mining operations started in 1968 and the current mining depth is 430 m. The open...area of the Kristineberg VHMS deposit, Skellefte district, Sweden .......................................A. Massive Zn-Cu-Pb deposits in the Røros ore district, Norway: setting and formation ................Matos The Jörn granitoid complex, Skellefte mining district, Sweden: petrography, lithogeochemistry and...for VHMS deposits, Kristineberg area, Skellefte District, Sweden ..................................... |  | | Journal (article/letter/editorial) | | (2004), historical gold production in the NU S district totals 630 t at Roşia Montană, 380 t at Barza-Brad...Roşia Montană-Bucium; and Baia de Arieş. A fifth district, Bulza-Tisa, is located south of the Golden Quadrilateral...deposits, four are located in the Brad-Săcărâmb District ED (Rovina, Colnic, Valea Morii and Bolcana)...quadrilateral, in the PT Roşia Montană-Bucium district (Fig. 1). The main geological characteristics...that host the deposits from the Brad-Săcărâmb district (Rovina, Colnic, Valea Morii and Bolcana) intruded |  | | Report (issue) | | 99201 2U.S. Geological Survey, Tucson, AZ 85705, USA 1990 5/14/91 TABLE OF CONTENTS Executive Summary...chromitites occurrences, southeastern Kalimantan, California, and Newfoundland. Figure 20. Chondrite normalized...analyses of PGM, Goodnews Bay, Alaska and Choco district, Columbia. Chondrite normalized PGE diagrams for...localities by Robert Oscarson in Menlo Park, California, X-ray diffraction analyses of mineral grains...by Robert Carlson and other chemists in Denver, Colorado. Laboratory investigations by DMR included mineralogical |  | | Report (issue) | | more than 2 million oz of gold in the New World district (see map on p. ii). Exploration for gold, platinum-group... Y»llowston» National Park Red Lodgechromite district WY 109° -I r 45°45' Permissive tracts forcopper+gold+...porphyry copper deposits. L 111° J 45' New Worid district Permissive tracts for selected deposit types...presence of various types of mineral deposits. Mining and exploration history and locations and descriptions...copper, lead, and zinc resources. Historically, mining districts in the ABSA produced gold from lode and |  | | Report (issue) | | GENERATEDSALINEBRINESRELATEDTO MOLYBDENUMAT QUESTA, NEW MEXICO,USA J. Cline,D. Vanko..................................involvedin modellingthe mass-balancerw,f.atiomhipt la assimilation-aystallimion pronms The .......-;,;...the 9 J.IC.lhmell«al. Tablel. Modal.. ,....,. (la aole %) of modelrocksusedin caJculationsgiven with...However, the adcumula (low HALOGENGEOCHEMISTRY OF LA\'ERED porosity) nature of many cumulates, the by...liquidl,y a processhe terms constitutional mne • la this processthe intercumulusliquid is incompatible |  | | Book | | A Comprehensive Example: The Cree de District, Colorado, USA 4.11. Summary 4.12. Recommended Reading...addition to improved techniques of exploration, mining, extraction, and management, by a better understanding...culminating with the Creede vein type deposit (Colorado, USA) as a comprehensive example. The second part...Intrusions related to flood basalts Duluth Complex, USA Nori!' sk-Tanakh, Siberia Ni-sulfide Ni-Cu sulfide...Bushveld Complex, South Africa Stillwater Complex, USA Great Dyke, Zimbabwe Sudbury Complex, Canada Chromite |  | | Book | | Corson, R.D. West 391-407 19. Exploration and Mining Perspective of the Main Sulfide Zone of the Great...DISCUSSION AND SUMMARY 404 19. EXPLORATION AND MINING OF THE MAIN SULPHIDE ZONE OF THE GREAT DYKE, ZIMBABWE...416 416 417 417 417 418 Cumulative PGE Contents MINING GEOLOGY AT HARTLEY PLATINUM MINE Grade Control...of Sulfide Dissemination A4 Magmatic Breccia A5 Stock-like Intrusions A6 Sulfides in Ophiolites A7 Tectonically...two largest such systems worldwide, the Sudbury mining camp and the Noril'sk-Talnakh deposits, are discussed |  | | Journal (article/letter/editorial) | | Potsdam, Germany M. Tokmakchieva University of Mining and Geology, Sofia, Bulgaria K. Bogdanov Department...flotation concentrates supplied by the Elatsite mining company were analysed for precious metals. The...used: Ag La and Lb, Au Ma, Bi Ma, Co Ka, Cu Ka, Fe Ka, Ni Ka, Pb Ma, Pd La, Pt La, S Ka, Sb La, Se La, Te...Te La. Pure elements (for Ag, Au, Co, Ni, Pd, Pt, Se), pyrite (for Fe), galena (for Pb), sphalerite (for...heating-freezing stage of FLUID Inc. (Denver, Colorado). This stage allows investigations at )196 to |  | | Report (issue) | | INSTITUTE OF MINING, METALLURGY AND PETROLEUM COPYRIGHT © 2002 CANADIAN INSTITUTE OF MINING, METALLURGY...Elements. Edited by L.J. Cabri. Canadian Institute of Mining, Metallurgy and Petroleum, Special Volume 54, p... Ontario Espoo, Finland Sudbury, Ontario Orléans-la-Source, France Moscow, Russia Washington, D.C. Maier...mineralization models. They also review the history of mining in the area and PGE production, reserves and resources...the currently producing mines of the Stillwater Mining Company. The PGE mineralization in the Great Dyke |  | | Report (volume) | | James M.D. Day Scripps Institution of Oceanography, USA Front-cover: Proton-induced X-ray emission maps...5251 Broad Branch Rd. NW Washington, DC 20015−1305 USA nbennett@ciw.edu Zoltan Zajacz 2 Department of...analysis by electron microprobe, or more recently by LA-ICPMS, employs a defocused or rastered beam. Certain...solubility measurements and heterogeneous time-resolved LA-ICPMS spectra (e.g., Ertel et al. 2001, 2006). Any...et al. 2001; Fonseca et al. 2011). The arrival of LA-ICPMS as a readily available tool for trace element |
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