Trace metal distributions in sulfide scales of the seawater-dominated Reykjanes geothermal system: Constraints on sub-seafloor hydrothermal mineralizing processes and metal fluxes

Grant, Hannah; Hannington, Mark D.; Hardardóttir, Vigdís; Fuchs, Sebastian; Schümann, Dirk

doi:10.1016/j.oregeorev.2019.103145

Cited by 14 publications

(8 citation statements)

References 92 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar increases in the Ag, Sb, and Tl concentrations of sulfides towards the upper part of the boiling zone have been reported from the Kondaros-Vani mineralization in northwest Milos (Schaarschmidt et al 2021a). Those authors predicted higher Co, Ni, and Se concentrations at deeper levels, analogous to vertical trends observed in geothermal wells in New Zealand (Simmons et al 2016) and Iceland (Grant et al 2020). This is confirmed by generally higher Co and Ni contents (1 to > 100 μg/g) in pyrite (Fig.…”

Section: Transport and Deposition Of Te Au Ag And Trace Metal(loid)ssupporting

confidence: 70%

“…Both the cooling and boiling of the hydrothermal fluid, as indicated by fluid inclusion and stable isotope data (Fig. 2b, c) may affect the metal fractionation and deposition during fluid ascent (Reed and Palandri 2006;Simmons et al 2016;Grant et al 2020;Falkenberg et al 2021;Schaarschmidt et al 2021a). The decreasing Te, Au, Se, Bi, and Co and increasing Ag, Sb, and Tl concentrations in galena and sphalerite with increasing elevation (Figs.…”

Section: Transport and Deposition Of Te Au Ag And Trace Metal(loid)smentioning

confidence: 98%

“…Therefore, trace element composition in hydrothermal sulfides is useful for characterizing conditions and processes during metal deposition (Frenzel et al 2016;Keith et al 2018b;Román et al 2019;Steadman et al 2021;Falkenberg et al 2021). Sulfides from different hydrothermal sites, different depth, or different hydrothermal stages record distinct fluid processes through space and time during the formation of multistage or zoned mineralization (Román et al 2019;Grant et al 2020;Frenzel et al 2021;Swinkels et al 2021;Wang et al 2022;Falkenberg et al 2022).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sources, transport, and deposition of metal(loid)s recorded by sulfide and rock geochemistry: constraints from a vertical profile through the epithermal Profitis Ilias Au prospect, Milos Island, Greece

et al. 2023

View full text Add to dashboard Cite

Drill core samples from the Profitis Ilias Pb-Zn-Cu-Ag-Au vein mineralization on Milos Island, Greece provide new insights into (i) the metal sources, (ii) the primary vertical metal(loid) distribution, and (iii) the supergene enrichment processes in a transitional shallow-marine to subaerial hydrothermal environment. Metal contents of unaltered and altered host rocks combined with Pb isotope analyses of hydrothermal sulfides suggest that most metal(loid)s were derived by leaching of basement rocks, whereas the distinct enrichment of Te is related to the addition of Te by a magmatic fluid. The trace element contents of base metal sulfides record decreasing Au, Te, Se, and Co, but increasing Ag, Sb, and Tl concentrations with increasing elevation that can be related to progressive cooling and fluid boiling during the hypogene stage. The formation of base metal veins with porous pyrite hosting hessite inclusions at ~ 400 m below the surface was triggered by vigorous fluid boiling. By contrast, the enrichment of native Au associated with oxidized Fe and Cu phases in the shallower part of the hydrothermal system resulted from supergene remobilization of trace Au by oxidizing meteoric water after tectonic exhumation to subaerial levels. Disseminated pyrite with higher Tl/Pb ratios and locally elevated Hg concentrations relative to vein pyrite reflects infiltration of the host rocks by boiled liquids and condensed vapor fluids. The vertical and temporal evolution of the Profitis Ilias mineralization, therefore, provides unique insights into the transport and precipitation of Au, Ag, Te, and related metal(loid)s by multiple fluid processes.

show abstract

Section: Transport and Deposition Of Te Au Ag And Trace Metal(loid)ssupporting

confidence: 70%

Section: Transport and Deposition Of Te Au Ag And Trace Metal(loid)smentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sources, transport, and deposition of metal(loid)s recorded by sulfide and rock geochemistry: constraints from a vertical profile through the epithermal Profitis Ilias Au prospect, Milos Island, Greece

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Results from sulfur isotope modeling suggest that at least ∼80% of the original H 2 S in the hydrothermal fluid at the main field precipitated below the seafloor, dominantly as pyrite/marcasite (Figure 8). A similar proportion (75%) of major and trace element deposition below the seafloor has been estimated at the seawater-dominated Reykjanes geothermal system in Iceland, which is considered an analog to seafloor systems (Grant et al, 2020).…”

Section: Differences In S Isotope Compositions Between the Main Lucky...supporting

confidence: 56%

Effects of Substrate Composition and Subsurface Fluid Pathways on the Geochemistry of Seafloor Hydrothermal Deposits at the Lucky Strike Vent Field, Mid‐Atlantic Ridge

Sánchez‐Mora

Jamieson

Cannat

et al. 2022

Geochem Geophys Geosyst

View full text Add to dashboard Cite

Subseafloor magmatism drives hydrothermal circulation and the formation of metal and sulfur-rich mineral deposits at or below the seafloor (Hannington, 2014;Lydon, 1988;Tivey, 2007). The geochemistry of seafloor hydrothermal deposits is controlled by several factors, including the composition of the subseafloor lithosphere with which the circulating fluids react, temperature, pressure, the presence and type of sediment, and magmatic volatile input into the system (Doe, 1994;Hannington et al., 1995Hannington et al., , 2005. At Lucky Strike, a vent field located south of the Azores on the Mid-Atlantic Ridge (MAR), the deposits are composed largely of a suite of hydrothermal minerals (pyrite, chalcopyrite, sphalerite, marcasite, anhydrite, and amorphous silica) that are typical for basalt-hosted seafloor hydrothermal deposits (

show abstract

“…Sulfide scales are known to cause plugging of two-phase flow pipelines carrying brine from production wells e.g., in wells in the Reykjanes geothermal area (Iceland). [58] 3. Review of Paint and Coating Systems…”

Section: Mineral Precipitation (Scaling)mentioning

confidence: 99%

Research and Development on Coatings and Paints for Geothermal Environments: A Review

Fanicchia,

Karlsdottir

2023

Adv Materials Technologies

View full text Add to dashboard Cite

Geothermal power plants are complex systems, where the interplay between different metallic components transforms the enthalpy of hot brine in the form of electricity or usable heated water. The naturally occurring variety in brine chemistry, linked to the presence of specific key species, and its thermo‐physical properties, leads to the development of different power plant configurations. Key species and power plant configuration in turn determine the extent of damage experienced by each component in the power plant: erosion, corrosion, and/or scaling, often acting combined. Paints and coatings, compared to changing the component alloy, have represented a preferred solution to mitigate these issues due to advantages in terms of costs and repairability. This is reflected in the large number of publications on research and development in this area within the past ≈50 years, with even an increasing trend in the past 10–20 years, indicating the strong interest to develop this clean and sustainable energy source. Therefore, in this work, the first of its kind after 1980, an in‐depth review of all published work on research performed on paints and coatings for geothermal applications, subdivided by the material system, is provided.

show abstract

Trace metal distributions in sulfide scales of the seawater-dominated Reykjanes geothermal system: Constraints on sub-seafloor hydrothermal mineralizing processes and metal fluxes

Cited by 14 publications

References 92 publications

Sources, transport, and deposition of metal(loid)s recorded by sulfide and rock geochemistry: constraints from a vertical profile through the epithermal Profitis Ilias Au prospect, Milos Island, Greece

Sources, transport, and deposition of metal(loid)s recorded by sulfide and rock geochemistry: constraints from a vertical profile through the epithermal Profitis Ilias Au prospect, Milos Island, Greece

Effects of Substrate Composition and Subsurface Fluid Pathways on the Geochemistry of Seafloor Hydrothermal Deposits at the Lucky Strike Vent Field, Mid‐Atlantic Ridge

Research and Development on Coatings and Paints for Geothermal Environments: A Review

Contact Info

Product

Resources

About