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Gold IsotopesNevadaGoldIsotopesIsotope LabelingNitrogen IsotopesOxygen IsotopesCarbon Isotopes
RenoStable isotope studiesDepositsMineralizationSierra NevadaCARLINRadioactive1983PorphyrySanta FeBasinCopperNova ScotiaStructural ControlFluidKinsley MountainMinesDepositionHydrothermal system1991PetrogenesisPyriteDepositApplyingJasperoidsMineralizationsDistrictIgneousProcessesChemicalAlterationCaliforniaVeinsNuclearContentProceedingsResults
Reno4
  • The Chihuahuas will close out August and start September in Reno, Nevada facing the Aces. (theprospectordaily.com)
  • Editor's note: This is the first of a twopart preview of an SEGsponsored forum to be held in Reno, Nevada, on May 14, 2005. (agriturismovaldappio.it)
  • But those doomsday scenarios are probably a bit overwrought, says geologist Lisa Stillings of the U.S. Geological Survey in Reno, Nev. (sciencenews.org)
  • The review chapters in this volume were the basis for a short course on sulfate minerals sponsored by the Mineralogical Society of America (MSA) November 11-12, 2000 in Tahoe City, California, prior to the Annual Meeting of MSA, the Geological Society of America, and other associated societies in nearby Reno, Nevada. (minsocam.org)
Stable isotope studies1
  • Geologic, fluid inclusion and the stable isotope studies of the Gays River lead-zinc deposit, Nova Scotia, Canada: Econ. (jmo.org.tr)
Deposits15
  • In contrast to typical orogenic gold deposits displaying textures indicating brittle-ductile deformation and recrystallization, those of Grass Valley only display minor brittle fracturing of quartz and pyrite. (mines.edu)
  • All of the deposits and resources occur at the intersection of north-northwest- and northeast-trending high-angle faults in slope facies limestones of the Devonian Nevada Group exposed in windows through Ordovician basin facies siliciclastic rocks of the Roberts Mountains allochthon. (comu.edu.tr)
  • Petrographic observations, geochemistry, and delta O-18 values of quartz suggest it was overprinted by the hydrothermal event that produced ore-related J(1), J(2), and J(3) jasperoids and associated gold deposits. (comu.edu.tr)
  • The positive correlation between the sizes of gold deposits and the delta O-18 composition of jasperoids indicates that gold was introduced by the O-18-enriched fluid. (comu.edu.tr)
  • Do all quartz deposits contain gold. (agriturismovaldappio.it)
  • Carlintype Au Deposits in Nevada: Unique Hydrothermal Systems? (agriturismovaldappio.it)
  • Globally, there has been a growing interest in research on clarifying the genetic relationship between iron oxide-apatite (IOA) and iron oxide-copper-gold (IOCG) deposits. (copernicus.org)
  • F. P. Bierlein, T. Fuller, K. Stüwe, D. C. Arne and R. R. Keays (1998): Wallrock alteration associated with turbidite-hosted gold deposits. (geovirtual2.cl)
  • Boyle, R. W. (1979): The Geochemistry of Gold and Its Deposits. (geovirtual2.cl)
  • The Geology of Gold Deposits. (geovirtual2.cl)
  • 1984): Gold '82: The Geology, Geochemistry and Genesis of Gold Deposits. (geovirtual2.cl)
  • Amuah, Ebenezer Ebo Yahans 2023-01-02 00:00:00 Gold-bearing granitoid deposits have recently been discovered in the Birimian of Ghana but their mode of formation and ore genesis remain enigmatic. (sagepub.com)
  • An O, H, S and C isotope study of carbonate-replacement tin deposits of the Dachang tin fıeld, China: Econ.Geol. (jmo.org.tr)
  • Applications of lithogeochemistry in the search for Proterozoic porphyry·type molybdenum, cop per and gold deposits, southern Finland. (studyres.com)
  • If you've followed any of the gold companies operating in Nevada, you're probably familiar with the "Carlin-type" deposits typical of the area: Low grade, high tonnage gold deposits consisting of micron-scale (invisible) gold particles hosted in sedimentary carbonate (e.g. limestone) rocks. (geologyforinvestors.com)
Mineralization5
  • The time of gold mineralization is recorded in pyrite by a chemically distinct growth zone containing arsenic, and nickel and cobalt zones with pyrites found in the E-W veins hosted in mafic-ultramafic rocks. (mines.edu)
  • EISENLOHR, B.N., GROVES, D., & PARTINGTON, G.A. (1989): Crustal-scale shear zones and their significance to Archaean gold mineralization in Western Australia. (geovirtual2.cl)
  • VANCOUVER, BRITISH COLUMBIA-(Marketwired - Feb. 27, 2014) - Pilot Gold Inc. (TSX:PLG) ("Pilot Gold" or the "Company") is pleased to announce that new drilling to follow up the recent high-grade discovery at Kinsley Mountain's Western Flank target has intersected additional high grade gold mineralization, including 6.85 grams per tonne gold ("g/t Au") over 41.7 metres in PK127C. (geologyforinvestors.com)
  • Recent results confirm that the newly discovered zone of high-grade mineralization is open in all directions," stated Matt Lennox-King, President and CEO, Pilot Gold. (geologyforinvestors.com)
  • While this classic Carlin-type description certainly applies, the nature of gold mineralization in the region is more complex and varied. (geologyforinvestors.com)
Sierra Nevada14
  • With a total past production of 13 Moz of lode gold, the Grass Valley gold district of the Sierra Nevada foothills province is the historically most productive lode gold source in California. (mines.edu)
  • Some of the previously published data are conflicting, and the timing of gold formation for the district seems inconsistent with previous interpretations of orogenic gold formation in the Cordillera of California, particularly when viewed relative to the much better studied Mother Lode belt in the southern Sierra Nevada. (mines.edu)
  • The east side of the modern Sierra Nevada mountain range at the edge of the Basin and Range Province. (stanford.edu)
  • New research reveals that after its initial formation 100 million years ago, the Sierra Nevada "died" during volcanic eruptions that blasted lava across much of the American West 40 million to 20 million years ago. (stanford.edu)
  • Then, tens of millions of years later, the Sierra Nevada mountain range as we know it today was "reborn. (stanford.edu)
  • The journey of these sediments southward in river systems draining into the ancient Pacific Ocean tells a story about the history of the Earth and the much-debated formation of the Sierra Nevada mountain range, the awe-inspiring backbone of eastern California that encompasses three national parks: Sequoia, Kings Canyon and Yosemite. (stanford.edu)
  • The ancestral Sierra Nevada began as a volcanic chain more than 100 million years ago, a time when dinosaurs still roamed the Earth. (stanford.edu)
  • Then, basin and range faulting came along and broke it all up, and now the Sierra Nevada is the westernmost or last of those major fault blocks," Miller said. (stanford.edu)
  • The divide, which separates the watersheds that drain into the Pacific Ocean from those draining eastward, remained in the ancestral Sierra Nevada in eastern California for tens of millions of years before moving into central Nevada when the volcanism that started 40 million years ago lifted the Earth's surface in a south-migrating wave. (stanford.edu)
  • The material from those volcanoes made it all the way out to the Pacific side of the Sierra Nevada - that's how we know the region in central Nevada where the eruptions occurred was higher than everything else," said Miller, noting that previous papers charted the ancient rivers that carried the volcanic material. (stanford.edu)
  • Then, beginning around 10 million years ago, the new Sierra Nevada emerged when the western U.S. was chiseled apart by basin and range faulting, which involved uplift and extension - a process that had very little to do with its earlier history, according to Miller. (stanford.edu)
  • There's been a lot of recent debate about when the Sierra Nevada came up as a mountain range, and our work is suggesting that both prevailing views are right - it's old and also young for completely different tectonic reasons," said Lund Snee, who is now a Mendenhall Research Fellow at the U.S. Geological Survey. (stanford.edu)
  • When the ancestral Sierra Nevada first arose over 100 million years ago, the mountains marked the edge of the North American continent, bordered by the Pacific Ocean to the west. (stanford.edu)
  • Genome Insider: Methane Makers in Yosemite's Lakes Meet researchers who sampled the microbial communities living in the mountaintop lakes of the Sierra Nevada mountains to see how climate change affects freshwater ecosystems, and how those ecosystems work. (doe.gov)
CARLIN1
  • Gold Bar is one of several Carlin-type gold mining districts located in the Battle Mountain-Eureka trend, Nevada. (comu.edu.tr)
Radioactive5
  • Gold-198 (198Au) is a radioactive isotope of gold. (wikipedia.org)
  • This isotope has also found use in nuclear weapons research and as a radioactive tracer in hydrological research. (wikipedia.org)
  • A jacket of natural 197 Au (the only stable gold isotope), irradiated by the intense high-energy neutron flux from an exploding thermonuclear weapon, would transmute into the radioactive isotope 198Au with a half-life of 2.697 days and produce approximately 0.411 MeV of gamma radiation, significantly increasing the radioactivity of the weapon's fallout for several days. (wikipedia.org)
  • Radioactive Gold-198 Nanoparticles In Nanomedicine: Green Nanotechnology and Radiochemical Approaches in Oncology. (wikipedia.org)
  • Moreover, advancements in the tumor embolization agents, for instance, mixing of microbeads with radioactive isotopes or inducing a chemotherapeutic substances to kill the cancerous tumor on site is anticipated to witness a huge growth in foreseen future, consequently, benefiting and increasing the tumor embolization market globally. (latestmarketreports.com)
19831
Porphyry1
  • Wall Rock alteration and hydrothermal flow paths about the Ann- Mason Porphyry Copper Deposit, Nevada- A6- km vertical reconstruction. (jmo.org.tr)
Santa Fe2
  • Prior to mine closure in 2006, Santa Fe Pacific Gold and Newmont produced 4.2 Moz of gold at an average grade of 2.06 g/t at Lone Tree, primarily from the N-S- to NNW-SSE-striking Wayne zone. (geoscienceworld.org)
  • FOR FURTHER INFORMATION CONTACT: Menice Santistevan, Northern New Mexico Citizens' Advisory Board, 94 Cities of Gold Road, Santa Fe, NM 87506. (iem-inc.com)
Basin1
  • Now, analysis has revealed where they really came from: central Nevada, indicating that part of today's Great Basin was the highest land in North America some 40 million to 20 million years ago. (stanford.edu)
Copper4
  • At many mining sites, the extraction and processing of coal or metal-sulfide ores (largely for gold, silver, copper, lead, and zinc) produce waste materials that generate acid-sulfate waters rich in heavy metals, commonly leading to contamination of water and sediment. (minsocam.org)
  • Au is the chemical symbol for gold Aurum, Ag Argentum for silver and Cu Cuprum for copper. (anticoz.fr)
  • It is often mined with other metal ores including copper, lead, zinc, and gold. (anticoz.fr)
  • CHRISTIE, A.B. & BRATHWAITE, R.L. (1986): Epithermal Gold-Silver and Porph.Copper Dep.of the Hauraki Gold Field- A Review: In HENLEY &HEDENQUIST & ROBERTS (eds. (geovirtual2.cl)
Nova Scotia1
  • Firestone geopolymers of Oak Island, Nova Scotia contain gold and osmium flecks, while radium alloys were found within chambers below Nevada's Black Rock Desert. (human-resonance.org)
Structural Control1
  • Regional Tectonics & Structural Control of Ore: The Major Gold Trends of Northern Nevada, Battle Mtn. (gsnv.org)
Fluid1
  • The style and intensity of gold deposition depends largely on nature of this fluid movement and of the host-rock. (geologyforinvestors.com)
Kinsley Mountain1
Mines1
Deposition1
  • Folding and thrust faulting of the sedimentary rocks in the region due to larger scale tectonic processes created numerous fluids channels and planes of weakness for the subsequent hydrothermal activity that led to gold deposition. (geologyforinvestors.com)
Hydrothermal system1
  • Based on these data and the apparent absence of any Eocene intrusions in the district, Gold Bar may be the product of a nonmagmatic hydrothermal system. (comu.edu.tr)
19911
  • Alien Interview' (1991) was recorded at Site-4 Facility located at Papoose Lake, Nevada --directed by 'Curious' George Scherf, Jr., 41st US President (1989-1993). (human-resonance.org)
Petrogenesis1
  • 0.05 g/t respectively) granitoids (now gneisses) and schists (metasedimentary) to evaluate their petrogenesis/provenance, and relationship to gold mineralisation in the Abansuoso area. (sagepub.com)
Pyrite4
  • Low gold grades occur in late-stage banded pyrite breccias consisting of a finely zoned Au-poor pyrite matrix surrounding jigsaw-fit clasts of quartz-, illite-, barite-, and adularia-altered siliciclastic rock. (geoscienceworld.org)
  • Gold precipitates relatively late in the paragenetic sequence entirely independent of quartz and is found within fractures in quartz, in fractures and voids within pyrite, and intergrown with galena and mica. (mines.edu)
  • Real gold can often be confused with "fool's gold" or iron pyrite. (agriturismovaldappio.it)
  • combination that is called gold ore. ... gold can often be confused with "fool's gold" or iron pyrite. (agriturismovaldappio.it)
Deposit2
Applying1
  • Supercharging SIP in the Fungal Hyphosphere Applying high-throughput stable isotope probing to the study of a particular fungi, researchers identified novel interactions between bacteria and the fungi. (doe.gov)
Jasperoids2
  • Mapping and rock sampling at the Right Spot identified a 250-metre north-northeast zone of surface jasperoids returning 1-5 g/t gold in grab samples. (geologyforinvestors.com)
  • Stratigraphic gold host units lying below the Candland Shale appear to surface an additional 500 metres to the south of the Right Spot target, where gold-bearing jasperoids are also present. (geologyforinvestors.com)
Mineralizations1
  • vein type gold-silver mineralizations at Kassiteres=Sappes, (NE-Greece). (voudouris.org)
District3
  • The present study represents the first detailed modern study on the Grass Valley gold district. (mines.edu)
  • The Gold Bar district contains a variety of discordant and stratabound jasperoid bodies, especially along the Wall Fault zone, that were mapped and studied in some detail to identify the attributes of those most closely associated with gold ore and to constrain genetic models. (comu.edu.tr)
  • FERGUSON,H.G. & GANNET, R.W. (1932): Gold-quartz veins of the Alleghany district, California. (geovirtual2.cl)
Igneous1
  • Along the Cordilleran margin of western North America, several competing rift models have been proposed to explain the origins of post-breakup igneous rocks that crop out from Yukon to Nevada. (geoscienceworld.org)
Processes2
  • Despite its economic importance, an understanding of the broad processes controlling the gold formation is lacking. (mines.edu)
  • Fyfe, W. S. & Henley, R. W. (1973): Some Thoughts on Chemical Transport Processes, with particular reference to Gold. (geovirtual2.cl)
Chemical2
  • the atomic number and the chemical symbol for lead, silver, and gold. (anticoz.fr)
  • You can pass a Nevada drug test for steroids while using testosterone, the base chemical of anabolic steroids. (fightopinion.com)
Alteration1
  • The gold is associated with sericitic and argillic alteration of the siliciclastic rocks and dikes and with decarbonatization and Fe carbonate alteration of the carbonate-bearing units, as well as in Fe-As sulfide and finegrained quartz alteration of all rock types. (geoscienceworld.org)
California1
  • That was also when much of the famous California gold was deposited in ancient rivers that flowed west from central Nevada out to the Central Valley. (stanford.edu)
Veins1
  • Quartz veins belonging to the second type containpyrite, chalcopyrite with lesser amount of gold. (jmo.org.tr)
Nuclear2
  • Gold has been proposed as a material for creating a salted nuclear weapon (cobalt is another, better-known salting material). (wikipedia.org)
  • The highest amount of 198Au detected in any United States nuclear test was in shot "Sedan" detonated at Nevada Test Site on July 6, 1962. (wikipedia.org)
Content1
  • You'll notice that the layers of sedimentary rock have been tilted so the the target beds - those with the highest gold content - have been exposed at the surface. (geologyforinvestors.com)
Proceedings1
  • In: Proceedings of the First International Conference on Gold and Silver in Medicine, Bethesda, Maryland, May 13-14, 1987. (cdc.gov)
Results2
  • Whole-rock trace-element and Nd- and Hf-isotope results are consistent with the low-degree partial melting of an enriched lithospheric mantle source during margin-scale extension. (geoscienceworld.org)
  • Results: According to the gold standard, 1911 persons had T1DM and 652 persons had T2DM (mean age (SD): 19.1 (6.5) years). (cdc.gov)