Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"low sulfidation"”.
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Paragenesis, fluid origin, and thermal history of a low-sulfidation epithermal gold-silver system
… gas compositions as an exploration tool for low-sulfidation deposits. Two-thirds of the gold from the Lesley Ann deposit is associated with pyrite, found in zones of intense silicification, and precipitated due to sulfidation of rhyolitic host rock during the earliest stages of hydrothermal …
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Geologic setting, Mineralization, and Detailed Underground Mapping of the Fire Creek Low-Sulfidation Epithermal Gold-Silver Deposit, Nevada
… of the Northern Nevada Rift (NNR). This shallow, low sulfidation epithermal vein deposit is hosted in Miocene age volcanic rocks, intrusions, and volcaniclastic sediments. It occurs in a similar structural setting as the Mule Canyon low sulfidation epithermal gold and silver deposit, which is …
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Characterization of the Gold Hill low-sulfidation epithermal Au-Ag vein system, northern Nye County, Nevada; Implications for continued discoveries in established mining districts
The Gold Hill low-sulfidation epithermal (LSE) vein system is an exceptionally well-preserved and extensive (~400k oz Au (eq.), RMGC internal data, 2023.) Oligocene-age vein deposit located within the Round Mountain mining district of northern Nye County, Nevada, USA. Gold Hill is seven kilometers …
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Volcanic, structural, and hydrothermal controls on coincident Archean Low and High Sulfidation VMS Systems within the Onaman Assemblage, Onaman-Tashota Greenstone Belt, Northern Ontario, Canada
High sulfidation volcanogenic massive sulfide (VMS) deposits show characteristics of VMS and high sulfidation epithermal deposits and are suggested to have formed through magmatic fluid contribution to an evolved seawater hydrothermal system. Two superimposed systems within the Neoarchean Onaman …
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Evidence for rapid epithermal mineralization and coeval bimodal volcanism, Bruner Au-Ag property, NV USA
… at the underexplored Miocene-age Bruner low-sulfidation epithermal Au-Ag deposit are elucidated using field and laboratory studies. Bruner is located in central Nevada within the Great Basin extensional province, near several major volcanic trends (Western Andesite, Northern Nevada Rift) …
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Geochemical controls on the fluid evolution of submarine and subaerial ore-forming hydrothermal systems
… controlled by fluid-rock interaction following seawater circulation in the oceanic crust and distinguishes the role of these processes from other mechanisms such as fluid phase separation. It is emphasized that the fluid to rock ratio plays an important role on the mechanisms of mass …
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Geochemistry of Arsenic, Manganese, and Iron in the Dexter Pit Lake, Tuscarora, Nevada
… volcanic field. The pit lake formed in 1990 following cessation of open-pit gold and silver mining operations. This pit lake has been the subject of previous geological study, which served to outline local hydrogeology and aqueous geochemical behavior of numerous conservative elements in pit …
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Assessing the Potential for Carlin-type Gold in Northern Nye County, Nevada
… of Carlin-type, carbonate-hosted, and ow sulfidation epithermal gold mineralization.A total of 119 drainage basins are highlighted as geochemically prospective for Carlin-type mineralization through FA. However, this technique does not differentiate between Carlin-type, carbonate-hosted, …
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Paragenetic Evolution of the Robertson Deposit: Eocene Intrusion Related Gold Deposit in the Northern Shoshone Range, Nevada
… the stock. Subsequent hydrothermal alteration followed, including endo/exoskarn, potassic alteration, sericitic alteration, and chloritic alteration. Petrographic observations of veins at Robertson indicate the succession of three main stages referred as 1) pre-gold, 2) syn-gold, and 3) post-gold. …