Role of hydrothermal precipitates in the geochemical cycling of vanadium

Trefry, John H.; Metz, Simone

doi:10.1038/342531a0

Cited by 143 publications

(58 citation statements)

References 27 publications

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“…fresh-water) systems published. However, Trefry and Metz (1989) cited an 80% V removal efficiency in seawater (200 mM V, 2 g L À1 FHY, pH 8, IS 0.7) while in the present study, at pH 8 the efficiency was still >90%, thus indicating the ionic-strength effect.…”

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confidence: 56%

“…Among the inorganic materials that can interact with Mo, V and phosphate (P) are poorly ordered Fe oxyhydroxides (e.g. ferrihydrite), which have a very high surface area and a high affinity to adsorb or incorporate and thus control the availability of different ions in terrestrial environments (Goldberg et al, 2002;Metz and Trefry 1988;Trefry and Metz 1989). High affinities for molybdate (Gustafsson 2003), vanadate (Feely et al 1998) and phosphate (Cornell and Schwertmann 2000;Gustafsson 2003;Michel et al 2007) for Fe oxyhydroxides have previously been documented in the literature.…”

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confidence: 99%

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Adsorption studies of Mo and Vonto ferrihydrite

Brinza¹,

Benning²,

Statham³

2008

Mineral. mag.

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In this paper, the kinetics of Mo and V (100 mM) uptake on ferrihydrite (FHY) were evaluated in batch, mono-sorbate systems at pH between 4 and 9, and in bi-sorbate systems in the presence of P (100 mM) at pH 7. In the Mo and V single-sorbate experiments, 100% adsorption was observed at pH values below 6 and 8, respectively. Above the point of zero charge (PZC = 7.97) of FHY, the adsorption efficiency for Mo dropped dramatically (20% at pH 8) while V showed high uptake efficiencies even at pH 9 (60% efficiency). The results from the bi-sorbate experiments (Mo-P and V-P) showed that at pH 7, P out-competed (97%) Mo for binding sites on FHY, while in the V-P binary system only~44% of the binding sites are occupied by P with the remaining sites being occupied by V.

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confidence: 56%

mentioning

confidence: 99%

Adsorption studies of Mo and Vonto ferrihydrite

Brinza¹,

Benning²,

Statham³

2008

Mineral. mag.

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“…As such, updated geochemical models should accompany future studies of the sedimentary proxy record in element evolution is largely adapted from the work of Saito et al (2003), except for Mo which was based on the ocean box models of Anbar and Knoll (2002), and has been further discussed by Zerkle et al (2005) and Anbar (2008). highlighting the concentration of selected elements in the modern ocean (Elderfield and Schultz, 1996;Williams and da Silva, 2003;Scott et al, 2008;Konhauser et al, 2009), the primitive ocean (as per Williams and da Silva, 2003), hydrothermal fluids (Trefry and Metz, 1989;Elderfield and Schultz, 1996;Douville et al, 2002;Kishida et al, 2004), and values based on the proxy record for ~2.7 Ga (Jones et al, 2015;Scott et al, 2008;Konhauser et al, 2009;Scott et al, 2013;Robbins et al, 2013). Clear differences exist between the predicted primitive ocean values of Williams and da Silva (2003), who based their estimates off of sulfide mineral solubility, and those indicated by the proxy record.…”

Section: Discussionmentioning

confidence: 99%

Trace elements at the intersection of marine biological and geochemical evolution

Robbins

Lalonde

Planavsky

et al. 2016

Earth-Science Reviews

169

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Life requires a wide variety of bioessential trace elements to act as structural components and reactive centers in metalloenzymes. These requirements differ between organisms and have evolved over geological time, likely guided in some part by environmental conditions. Until recently, most of what was understood regarding trace element concentrations in the Precambrian oceans was inferred by extrapolation, geochemical modeling, and/or genomic studies. However, in the past decade, the increasing availability of trace element and isotopic data for sedimentary rocks of all ages have yielded new, and potentially more direct, insights into secular changes in seawater composition -and ultimately the evolution of the marine biosphere. Compiled records of many bioessential trace elements (including Ni, Mo, P, Zn, Co, Cr, Se, and I) provide new insight into how trace element abundance in Earth's ancient oceans may have been linked to biological evolution. Several of these trace elements display redox-sensitive behavior, while others are redox-sensitive but not bioessential (e.g., Cr, U). Their temporal trends in sedimentary archives provide useful constraints on changes in atmosphere-ocean redox conditions that are linked to biological evolution, for example, the activity of oxygen-producing, photosynthetic cyanobacteria. In this review, we summarize available Precambrian trace element proxy data, and discuss how temporal trends in the seawater concentrations of specific trace elements may be linked to the evolution of both simple and complex life. We also examine several biologically relevant and/or redox-sensitive trace elements that have yet to be fully examined in the A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT3 sedimentary rock record (e.g., Cu, Cd, W) and suggest several directions for future studies.

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“…Vanadium is one of the elements that is enriched near hydrothermal vents (e.g. Trefry and Metz 1989). Therefore, the low correlation with carbon and the high values in the Kainuu and Outokumpu black schists together indicate deposition in an environment with hydrothermal activity.…”

Section: The High Copper Zinc Nickel and Cobalt Concentrationsmentioning

confidence: 99%

Geochemical evidence for the hydrothermal origin of sulphur, base metals and gold in Proterozoic metamorphosed black shales, Kainuu and Outokumpu areas, Finland

Loukola-Ruskeeniemi

1991

Mineral. Deposita

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Metamorphosed black shale formations 120 150 m thick with median concentrations of 7% non-carbonate carbon and 6 8% sulphur are abundantly met in drill cores in the Kainuu and Outokumpu areas. Carbon isotope c~t3C values are comparable to the average isotopic composition of non-carbonate carbon in sedimentary rocks. The rare earth element patterns show cerium depletion, indicating a marine origin. Base metal concentrations in black shales are high in the Talvivaara mineralization (ore estimate: 300 Mt with 0.26% Ni, 0.14% Cu and 0.53% Zn) and in the vicinity of ophiolite complexes. In the Kainuu schist belt, the median value for gold is 35 ppb (max 170 ppb) in the western part and 16 ppb (max 180 ppb) in the east. Highest platinum and palladium concentrations encountered are 60-70 ppb. It is shown that in the Kainuu black shales, concentrations of sulphur, base metals and precious metals have been increased by hydrothermal processes, as indicated by positive europium anomalies, elevated mercury concentrations (max 7.5 ppm), high sulphur isotope 634S values and the enrichment of sulphur and base metals relative to carbon. The processes operative during the deposition of these shales find an analogy in recent processes in ocean ridge spreading axes.Black shales were originally argillaceous sediments containing organic matter. Their chemical composition has therefore been affected by numerous factors, including physicochemical conditions, prevailing organisms, the chemical composition of the water during deposition and the composition of detrital material. The hydrothermal activity leaves fingerprints in the mineralogy and geochemistry of sediments depositing near the vents (e.g. McMurray 1990). Hydrothermal fluids may also add metals to a black shale sediment later, during diagenesis, as indicated by studies on the Kupferschiefer (Jowett etal. 1987; Piittmann and Gobel 1990). In addition, metamorphic and tectonic remobilization may affect the chemical composition of shale.In a preliminary study (Ruskeeniemi etal. 1986;Ruskeeniemi 1988, the chemical characteristics of metamorphosed black shales were studied in 16 localities in the Proterozoic of Finland, to discover whether hydrothermal activity is reflected in their chemical composition, and, if so, whether the element ratios could be used in ore exploration. The promising nature of the results encouraged us to begin a detailed study in eastern Finland, where the Outokumpu Cu-Co-Zn-Au ore deposits and the Talvivaara Ni-Cu-Zn mineralization are located. The present publication reports on this work and represents a progress report on the total research, which will continue up until 1992.In the following, metamorphosed black shale is referred to as black schist.

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Role of hydrothermal precipitates in the geochemical cycling of vanadium

Cited by 143 publications

References 27 publications

Adsorption studies of Mo and Vonto ferrihydrite

Adsorption studies of Mo and Vonto ferrihydrite

Trace elements at the intersection of marine biological and geochemical evolution

Geochemical evidence for the hydrothermal origin of sulphur, base metals and gold in Proterozoic metamorphosed black shales, Kainuu and Outokumpu areas, Finland

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