Natural speciation of Ni, Zn, Ba, and As in ferromanganese coatings on quartz using X-ray fluorescence, absorption, and diffraction

Manceau, Alain; Lanson, Martine; Geoffroy, Nicolas

doi:10.1016/j.gca.2006.08.036

Cited by 198 publications

(232 citation statements)

References 188 publications

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“…In various natural settings (Jenne, 1968;Carpenter et al, 1975;Robinson, 1981;Dillard et al, 1982;Lind and Hem, 1993) and in a series of laboratory experiments, many metals are closely associated with Mn oxyhydroxides, including: Zn (Balistrieri and Murray, 1986;Catts et al, 1986;Hem et al, 1987), Cu and Ni (Balistrieri et al, 1986;Hem et al, 1989), Cd (Hem et al, 1991), Pb (Catts et al, 1986); but also in deep-sea sediments (Cu, Ni, Pb and Zn) (Thomson et al, 1993), in sea water (Ni, Cu and V) (Shaw et al, 1990) and as coating on quartz (Manceau et al 2007). The importance of processes occurring at reaction sites on solid-phase surface in contact with Mn-bearing solutions has long been recognized, but these results are not observed here.…”

Section: Behaviour Of Trace Elementsmentioning

confidence: 99%

Mobility of major-, minor- and trace elements in solutions of a planosolic soil: Distribution and controlling factors

Pelfrêne

Gassama

Grimaud

2009

Applied Geochemistry

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Section: Behaviour Of Trace Elementsmentioning

confidence: 99%

Mobility of major-, minor- and trace elements in solutions of a planosolic soil: Distribution and controlling factors

Pelfrêne

Gassama

Grimaud

2009

Applied Geochemistry

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“…Todorokite is a manganate with a tunneled-structure and an octahedral sheet of about 10 Å with a cross row octahedral chain running along the b axis. 10Å-vernadite is a disordered phyllomanganate with a 10 Å-thick octahedral sheet layer related to the presence of water and cations within the interlayer (Bodeï et al, 2007;Manceau et al, 2007). These oxyhydroxides show micro-hemispheroidal structures or filament textures under the SEM (Fig.…”

Section: Sedimentology and Mineralogymentioning

confidence: 99%

Characterization of metalliferous sediment from a low-temperature hydrothermal environment on the Eastern Flank of the East Pacific Rise

et al. 2008

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Metalliferous deposits are described from the eastern flank of the East Pacific Rise (EPR) offshore Costa Rica, close to a basaltic seamount called "Dorado high".Based on heat-flow data and porewater profiles, the site is an area of active low temperature hydrothermal discharge. We focus on the mineralogical and chemical analyses from a 124 cm long gravity core (GC50), located on the north-western slope of the 100 m high Dorado high. In this core, the sediments consist of detrital clay minerals as well as authigenic minerals such as zeolites, apatites, and Fe/Mn-rich oxyhydroxides. In contrast, the reference sediments from adjacent areas without hydrothermal activity are olive gray hemipelagic muds composed of volcanic glass particles, clay minerals, siliceous microfossils, and some detrital quartz and feldspar.Bulk sediment chemistry and chemical enrichment factors calculated with respect to the reference sediment indicate that the most important chemical changes occurred at the base of the core from 100 to 124 cm bsf, with strong enrichments in MnO, CaO, P 2 O 5 , and Fe 2 O 3 . These enrichments are correlated with the occurrence of authigenic Fe-oxyhydroxide (goethite) and Mn oxide (todorokite and vernadite, at 100 cm bsf), and hydrothermal apatite (110-124 cm bsf). In the upper section of the core from 12 to 70 cm, the sediment is composed of abundant smectite and authigenic phillipsite, and only minor chemical changes can be observed with respect to the reference sediments.The ubiquitous presence of phillipsite suggests that the entire sedimentary column of core GC50 was first affected by diagenesis. However, below 70 cm bsf, these phillipsites are partially dissolved and Fe oxides occur from 110 to 124 cm, followed 2 upward by Mn oxides at 100 cm. This transition from Fe to Mn rich sediments can be interpreted in terms of an upward increasing redox potential. PAAS-normalized REE patterns of GC50 sediments present clearly negative Ce and positive Y anomalies inherited from seawater at the base of core GC50. These anomalies decrease upward, which we interpret together with the transition from Fe to Mn-rich sediments by an upward migrating low temperature hydrothermal fluid. Thus, after a first stage of diagenesis, the discharge of a low temperature hydrothermal fluid occurred through the sedimentary column, leading to the precipitation of hydrothermal compounds that are lacking towards the surface.

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“…Birnessite (layer-type MnO 2 ), produced mainly by bacteria and fungi, is a ubiquitous environmental nanoparticle participating in important geochemical processes, particularly metal scavenging (Tebo et al, 2004;Tonkin et al, 2004;Toner et al, 2006, Manceau et al, 2007Miyata et al, 2007). Among the trace metals of major interest, Zn appears to be influenced strongly in its biogeochemical cycling by sorption on birnessite minerals found in soils, aquifers, streams, and wetlands .…”

Section: Introductionmentioning

confidence: 99%

“…Among the trace metals of major interest, Zn appears to be influenced strongly in its biogeochemical cycling by sorption on birnessite minerals found in soils, aquifers, streams, and wetlands . Detailed molecular-scale studies of sorbed Zn 2+ species have been published for chemically-and microbially-synthesized birnessite (Manceau et al, 2002;Toner et al, 2006), natural soil and marine birnessite (Marcus et al, 2004;Manceau et al, 2007), and Zn-Mn coprecipitates on plant roots (Lanson et al, 2008). These studies reveal that Zn 2+ binds to Mn(IV) vacancy sites in hexagonal birnessite, forming triple-corner-sharing (TCS) inner-sphere surface complexes with the three surface O surrounding a vacancy.…”

Section: Introductionmentioning

confidence: 99%

“…However, other birnessite samples shown to contain the Zn IV -TCS species comprise sheets of octahedra with only Mn(IV) present [sediment birnessite, Isaure et al (2005); bacteriogenic birnessite and δ-MnO 2 , Toner et al (2006); quartz-coating birnessite, Manceau et al (2007); plant-root Zn-Mn coprecipitate, Lanson et al (2008)]. Therefore, it does not seem necessary to connect the existence of Zn IV -TCS uniquely to the presence of Mn(III) substituted in the octahedral sheet and the fundamental basis for the occurrence of the four-coordinate surface species remains unclear.…”

Section: Introductionmentioning

confidence: 99%

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Zinc surface complexes on birnessite: A density functional theory study

Kwon

Refson

Sposito

2009

Geochimica et Cosmochimica Acta

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Biogeochemical cycling of zinc is strongly influenced by sorption on birnessite minerals (layertype MnO 2 ), which are found in diverse terrestrial and aquatic environments. Zinc has been observed to form both tetrahedral (Zn IV ) and octahedral (Zn VI ) triple-corner-sharing surface complexes (TCS) at Mn(IV) vacancy sites in hexagonal birnessite. The octahedral complex is expected to be similar to that of Zn in the Mn oxide mineral, chalcophanite (ZnMn 3 O 7 ·3H 2 O), but the reason for the occurrence of the four-coordinate Zn surface species remains unclear. We address this issue computationally using spin-polarized Density Functional Theory (DFT) to examine the Zn IV -TCS and Zn VI -TCS species. Structural parameters obtained by DFT geometry optimization were in excellent agreement with available experimental data on Zn-birnessites.Total energy, magnetic moments, and electron-overlap populations obtained by DFT for isolated Zn IV -TCS revealed that this species is stable in birnessite without a need for Mn(III) substitution in the octahedral sheet and that it is more effective in reducing undersaturation of surface O at a Mn vacancy than is Zn VI -TCS. Comparison between geometry-optimized ZnMn 3 O 7 ·3H 2 O (chalcophanite) and the hypothetical monohydrate mineral, ZnMn 3 O 7 ·H 2 O, which contains only tetrahedral Zn, showed that the hydration state of Zn significantly affects birnessite structural stability. Finally, our study also revealed that, relative to their positions in an ideal vacancy-free

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Natural speciation of Ni, Zn, Ba, and As in ferromanganese coatings on quartz using X-ray fluorescence, absorption, and diffraction

Cited by 198 publications

References 188 publications

Mobility of major-, minor- and trace elements in solutions of a planosolic soil: Distribution and controlling factors

Mobility of major-, minor- and trace elements in solutions of a planosolic soil: Distribution and controlling factors

Characterization of metalliferous sediment from a low-temperature hydrothermal environment on the Eastern Flank of the East Pacific Rise

Zinc surface complexes on birnessite: A density functional theory study

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