High sulfidation gold deposits
WebAug 26, 2015 · High sulphidation gold systems are a unique and increasingly important type of mineral deposit. These systems are formed within a vertical continuum from shallow epithermal environments to... WebThe eastern Sunda Arc in Indonesia contains four giant porphyry Cu-Au / high sulfidation epithermal gold deposits in Sumbawa and western Java. Numerous… 15 comments on LinkedIn
High sulfidation gold deposits
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Web... of high-sulfidation ore deposits: Many high-sulfidation deposits, particularly those formed at shallow depth, occur near domes and stratovolcano edifices (Sillitoe, 1999; Table 3).... WebMar 1, 2007 · The world-class Veladero high-sulfidation epithermal gold deposit is located near the northern end of the El Indio-Pascua metallogenic belt in Argentina. New 40Ar-39Ar alunite and jarosite ages were… Expand 23 Andean-type convergent continental margins (upper volcanic-sedimentary level) P. Laznicka Geology 2010
WebHigh-sulphidation deposits result from fluids (dominantly gases such as SO2, HF, HCl) channeled directly from a hot magma. The fluids interact with groundwater and form strong acids. These acids rot and dissolve the surrounding rock leaving only silica behind, often in a sponge-like formation known as vuggy silica. WebNov 1, 2024 · A very large and blind copper-gold deposit (Onto) was discovered, in which copper occurs largely as disseminated covellite with pyrite, and as pyrite-covellite veinlets in a tabular block measuring at least 1.5 × 1 km, with a vertical thickness of ≥1 km. ... The very high sulfidation state of the mineralization is thought to be a consequence ...
WebJan 1, 2011 · January 1, 2011. Large bulk-tonnage high-sulfidation gold deposits, such as Yanacocha, Peru, are the surface expression of structurally-controlled lode gold deposits, … WebAug 1, 2024 · The Dabaiyang gold deposit is located within the Zhang-Xuan gold mineralized zone, along the northern margin of the North China Craton (NCC). The ore mineralization is hosted within Precambrian metamorphic rocks, and is a typical quartz-vein type gold deposit with minor sulfide mineralization.
WebJan 1, 2009 · This work aims to assess geobotanical anomalies related to high-sulfidation gold mineralization in terranes covered by almost virgin tropical rain forests located in the Tapajos gold province, northern Brazil.
WebThe Big Easy prospect is a low-sulfidation epithermal gold occurrence of Neoproterozoic age in the Burin-Bonavista region of Newfoundland, Canada. Mineralization is predominantly hosted in epiclastic rocks of the Musgravetown Group. This well-preserved system lies within the tectonostratigraphic Avalon Zone and is dated as Late Neoproterozoic (ca. 573 … easter mug rug embroidery design in the hoopWebintermediate sulfidation-state liquid rises to the level of the lithocap, it will evolve to high-sulfidation state due to cooling in the residual quartz (Einaudi et al., 2003). Copper will deposit principally as enargite along with gold to form a lithocap-hosted high-sulfidation deposit. By contrast, if the same phyllic-stage liquid ascends along cue for treason audiobook freeWebSeven epithermal gold-silver deposits with >1 Moz gold production, several large elemental sulfur deposits, and many large areas (10s to >100 km2) of hydrothermally altered rocks are present in the southern ancestral arc, especially south of latitude 40°N. easter m\\u0026m\\u0027s cookie barsWebThe eastern Sunda Arc in Indonesia contains four giant porphyry Cu-Au / high sulfidation epithermal gold deposits in Sumbawa and western Java. Numerous… 15 commentaires sur LinkedIn easter m\u0026m chocolate chip cookies recipeWebDec 31, 2014 · These data support a growing understanding of the formation of high-sulfidation gold deposits as the consequence of single-phase expansion of gas from magmatic-gas reservoirs beneath the surface of active volcanoes without the intervention of a later aqueous fluid including groundwater. easter m\u0026m cookie barsWebMar 31, 2024 · Adsorption on growing pyrite surfaces, a potentially effective mechanism for scavenging Au from a relatively Au-poor fluid, is also proposed to have played a key role in mineralization in other high-sulfidation deposits where pyrite is the main host of Au (Chouinard et al. 2005b; King et al. 2014). Therefore, we suggest that the same … cue for treason kitWebNov 24, 2016 · November 24, 2016 Carlin, epithermal, and orogenic gold deposits, today mined almost exclusively for their gold content, have similar suites of anomalous trace elements that reflect similar low-salinity ore fluids and thermal conditions of … cue floral cotton tuck front dress