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• W2772039021 endingPage "186" @default.
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• W2772039021 abstract "Fluid mixing is an important process in the formation of many hydrothermal vein-type deposits. Here, we present evidence from hydrothermal fluorite-barite-quartz veins with Pb-Zn-Cu-(Ag)-sulfides and associated mineralization, indicating that mineral precipitation was initiated by mixing of fluids derived from multiple sources, including mixing between more than two end-member fluid compositions. Based on our observations, we relate the diversity of the hydrothermal veins of the Schwarzwald mining district in terms of mineral assemblage and fluid inclusion chemistry to the disturbed and transient geological environment during ongoing rifting. Literature data on the regional geology, current groundwater reservoirs, formation processes and hydraulic features are augmented by new fluid inclusion analyses from post-Cretaceous, hydrothermal vein minerals including microthermometry, crush leach, Microraman and LA-ICP-MS analyses of individual fluid inclusions. Petrography and microthermometry of fluid inclusions show complex sequences of alternating fluid signatures within different growth zones of one crystal. High (20–26 wt% NaCl + CaCl2), moderate (5–20 wt% NaCl + CaCl2) and low salinity (< 5 wt% NaCl + CaCl2), sulfate- and/or CO2-bearing primary fluids were trapped during crystal growth. Such variations are commonly observed in minerals from different localities. Bulk crush leach analyses show significant variations in major element composition of the trapped fluids, within the overall Na-Ca-Cl-SO4-HCO3-system. These variations are caused by mixing of fluids from different aquifers and in various proportions. Ancient fluids show chemical similarities to modern groundwater aquifers that are available for direct sampling, such as granitic basement, Lower Triassic sandstones or Middle Triassic limestones and evaporites. Analyses of individual fluid inclusions by LA-ICP-MS support this interpretation and document the multi-component fluid mixing processes at individual localities recorded on the scale of single crystal growth zones. The latter data are used in a diffusion model to obtain the duration of mineral growth (before the fluid is homogenized), which implies very short-lived fluid events on the order of seconds to hours. By defining end member fluids and their proportions, we show that nearly all fluid mixtures are saturated with respect to barite. By contrast, fluorite-saturated fluids can only be modelled by mixing of a basement brine with fluids from Triassic sandstones. All fluid mixtures are strongly undersaturated with respect to galena, chalcopyrite and sphalerite, the most commonly observed ore minerals in the hydrothermal veins. As the calculated fluid mixtures are typically relatively oxidized and contain high sulfate/sulfide ratios, precipitation of sulfides was probably related to short-lived reduction events caused by an influx of hydrocarbons, by reactions with graphitic wall rocks in fractures by sulfidation related to fluid-rock reaction with the surrounding host rocks or an external influx of hydrocarbon-bearing fluids. The multi-aquifer fluid mixing processes involving aquifers of different chemical and physical constitution were triggered by brittle deformation related to rifting of the Rhine graben. This appears to be essential for the formation of a large number of mineralogically diverse hydrothermal ore deposits." @default.
• W2772039021 created "2017-12-22" @default.
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• W2772039021 date "2018-03-01" @default.
• W2772039021 modified "2023-10-10" @default.
• W2772039021 title "Multi-reservoir fluid mixing processes in rift-related hydrothermal veins, Schwarzwald, SW-Germany" @default.
• W2772039021 cites W1943636449 @default.
• W2772039021 cites W1964327963 @default.
• W2772039021 cites W1964934259 @default.
• W2772039021 cites W1966198829 @default.
• W2772039021 cites W1966404558 @default.
• W2772039021 cites W1967289193 @default.
• W2772039021 cites W1970266532 @default.
• W2772039021 cites W1971880638 @default.
• W2772039021 cites W1985480593 @default.
• W2772039021 cites W1990614253 @default.
• W2772039021 cites W1993457238 @default.
• W2772039021 cites W1994542106 @default.
• W2772039021 cites W1998622803 @default.
• W2772039021 cites W2000886616 @default.
• W2772039021 cites W2004845239 @default.
• W2772039021 cites W2009588458 @default.
• W2772039021 cites W2011490710 @default.
• W2772039021 cites W2011851433 @default.
• W2772039021 cites W2017695944 @default.
• W2772039021 cites W2017784300 @default.
• W2772039021 cites W2020772963 @default.
• W2772039021 cites W2021239497 @default.
• W2772039021 cites W2026041323 @default.
• W2772039021 cites W2029894689 @default.
• W2772039021 cites W2030033328 @default.
• W2772039021 cites W2031830326 @default.
• W2772039021 cites W2032092170 @default.
• W2772039021 cites W2033459845 @default.
• W2772039021 cites W2033885626 @default.
• W2772039021 cites W2037553433 @default.
• W2772039021 cites W2040407216 @default.
• W2772039021 cites W2042572946 @default.
• W2772039021 cites W2043877195 @default.
• W2772039021 cites W2045705883 @default.
• W2772039021 cites W2047244530 @default.
• W2772039021 cites W2052281463 @default.
• W2772039021 cites W2053335043 @default.
• W2772039021 cites W2054928192 @default.
• W2772039021 cites W2057564971 @default.
• W2772039021 cites W2058462573 @default.
• W2772039021 cites W2059336720 @default.
• W2772039021 cites W2062788183 @default.
• W2772039021 cites W2064491230 @default.
• W2772039021 cites W2065361472 @default.
• W2772039021 cites W2066848477 @default.
• W2772039021 cites W2080405859 @default.
• W2772039021 cites W2083753705 @default.
• W2772039021 cites W2084435052 @default.
• W2772039021 cites W2086951651 @default.
• W2772039021 cites W2094917496 @default.
• W2772039021 cites W2097421407 @default.
• W2772039021 cites W2121479085 @default.
• W2772039021 cites W2126678489 @default.
• W2772039021 cites W2128260246 @default.
• W2772039021 cites W2139660398 @default.
• W2772039021 cites W2141152284 @default.
• W2772039021 cites W2143809232 @default.
• W2772039021 cites W2153166589 @default.
• W2772039021 cites W2153309939 @default.
• W2772039021 cites W2167102913 @default.
• W2772039021 cites W2170448550 @default.
• W2772039021 cites W2171846383 @default.
• W2772039021 cites W2236924254 @default.
• W2772039021 cites W2254954785 @default.
• W2772039021 cites W2296760541 @default.
• W2772039021 cites W2319819922 @default.
• W2772039021 cites W2323470470 @default.
• W2772039021 cites W2326201746 @default.
• W2772039021 cites W2393776205 @default.
• W2772039021 cites W2400849676 @default.
• W2772039021 cites W2492408839 @default.
• W2772039021 cites W2544370489 @default.
• W2772039021 cites W2589924043 @default.
• W2772039021 cites W2609726598 @default.
• W2772039021 cites W2625967402 @default.
• W2772039021 cites W2912738245 @default.
• W2772039021 cites W4234065882 @default.
• W2772039021 cites W4244110651 @default.
• W2772039021 doi "https://doi.org/10.1016/j.gexplo.2017.12.004" @default.
• W2772039021 hasPublicationYear "2018" @default.
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