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 5 of 5 for “"alteration mineralogy"”.
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Geochemical controls on the fluid evolution of submarine and subaerial ore-forming hydrothermal systems
… seafloor and the diversity of hydrothermal alteration mineralogy surrounding VHMS deposits in ancient volcanic terranes. Compiled data of natural vent fluid compositions from the neovolcanic zones of the global oceans, primary-secondary mineralogy occurring in active geothermal systems, and …
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Spatial and temporal evolution of fluids in hydrothermal ore deposits
… US. The distribution of fluid inclusions, alteration mineralogy<br />and grade indicate that the intrusive responsible for the mineralization was only partially<br />intercepted during the exploration program and that one single magmatic event was likely<br />responsible for the …
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Gold and Base Metal Mineralization, Hydrothermal Alteration and Vein Paragenesis in the Spring Valley Deposit, Pershing County, Nevada
… quartz-sericite-pyrite-carbonate ± tourmaline alteration. Initial classification as a porphyry gold system is thus disproved, and alternate orogenic and reduced intrusion-related gold interpretations are presented. Vein-related alteration is relatively consistent throughout the Quartz-eye …
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Geology, geochemistry, and genesis of the El Peñón epithermal Au-Ag deposit, northern Chile : characteristics of a bonanza-grade deposit and techniques for exploration
… display two distinct types of hydrothermal alteration: widespread alteration associated with near-neutral pH, reduced fluid and localised alteration associated with acidic pH, oxidised fluid. Near-neutral pH, reduced fluid produced widespread replacement of phenocrysts and groundmass by …
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An investigation into the complementary capabilities of X-ray computed tomography and hyperspectral imaging of drill core in geometallurgy
… to be challenging because of pervasive mineral alteration and the nature of the rock types (mafic and ultra-mafic rocks) - providing limited information on the mineral assemblage and texture due to low scanning resolution and pervasive alteration (serpentinisation and chloritization) in the …