Fractionation of families of major, minor, and trace metals across the melt-vapor interface in volcanic exhalations

Hinkley, Todd K.; Cloarec, M.F. Le; Lambert, G.

doi:10.1016/0016-7037(94)90053-1

Cited by 71 publications

(50 citation statements)

References 39 publications

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“…The incorporation of Rb and Cs in K chlorides, and preferential incorporation of Cs favored by decreasing temperature, were also observed at other sites (Quisefit et al, 1989). Compositional variation of the alkali halides with decreasing temperatures (NaCl > KCl > Rb-Cs bearing chlorides > Cs bearing chlorides) was previously discussed by Symonds and Reed (1993) and agrees with the decreasing volatility within the alkali family (Cs > Rb > K > Na) observed in aerosols (Hinkley et al, 1994;Gauthier, 1998). The calculations show that Na and K precipitate as halides below 650…”

Section: Discussionsupporting

confidence: 73%

Deposition of trace elements from high temperature gases of Satsuma-Iwojima volcano

Africano¹,

Rompaey²,

Bernard³

et al. 2014

Earth Planet Sp

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The Satsuma-Iwojima volcano has been emitting continuously high temperature (600• to 900• C) gases for at least 800 years. We identified the minerals that form in response to closed-system cooling of these gases and from airmixing reactions. Major differences compared with the sublimates observed at other volcanoes are the occurrence of wulfenite (PbMoO 4 ) and several mixed chlorides. This is the first report of wulfenite in fumarolic deposits. Thermochemical modeling shows that wulfenite precipitates between 540• and 490• C from a gas with lower sulfur content and/or higher f O 2 , and a higher Mo content (log f SO 2 = −2.1, log f H 2 S = −5, log f O 2 = −18.6, log f H 2 MoO 4 = −4.5, T = 500• C) than the previously reported gas composition. The occurrence of abundant K, Pb, Fe, Zn, Rb and Cs mixed chlorides may be promoted by the low S/Cl of the Satsuma-Iwojima high temperature gases. Natural sublimates of metallic elements (molybdenite, wulfenite, anglesite, Tl-Pb and Tl-Bi sulfides, Mo oxydes and Pb oxides) are deposited along the fumarolic conduit and on the ground under conditions of variable temperatures and f O 2 . The increase in f O 2 due to the mixing of the gases with the atmosphere reduces the volatility of several elements (As, Sn, Na, K and Pb) by promoting their condensation at higher temperatures. As air mixes with volcanic gas in the fumarolic plume, we can expect to find these metals as aerosols.

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Section: Discussionsupporting

confidence: 73%

Deposition of trace elements from high temperature gases of Satsuma-Iwojima volcano

Africano¹,

Rompaey²,

Bernard³

et al. 2014

Earth Planet Sp

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“…Among the elements presented in Fig. 3, K happens to be the most volatile species found enriched in volcanic gases, due to degassing from the magma (Hinkley et al, 1994;Rubin, 1997). Also Zr was found in enhanced concentrations in deposits from a volcanic plume compared to the magma (Moune et al, 2005), indicating that also this element could have been abundant in the gas phase and condensed onto the ash particles.…”

Section: Ash Compositionmentioning

confidence: 95%

“…Although analysis of rare elements such as the chalcophile metals (Bi, Cd, Cu, In, Pb and Tl), found in volcanic plumes from degassing of silicate melts (Hinkley et al, 1994), would be necessary to distinguish volcanic ash from this type of source, the high concentrations of crustal elements together with elevated sulphur concentrations in the aerosol samples are strong evidence of volcanic origin. On a final note, all of the elements, except manganese (Mn), in these three samples have the highest concentrations noted in the entire CARIBIC data set taken over a 10 years period.…”

Section: Ash Compositionmentioning

confidence: 99%

Composition and evolution of volcanic aerosol from eruptions of Kasatochi, Sarychev and Eyjafjallajökull in 2008–2010 based on CARIBIC observations

et al. 2013

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Large volcanic eruptions impact significantly on climate and lead to ozone depletion due to injection of particles and gases into the stratosphere where their residence times are long. In this the composition of volcanic aerosol is an important but inadequately studied factor. Samples of volcanically influenced aerosol were collected following the Kasatochi (Alaska), Sarychev (Russia) and also during the Eyjafjallajökull (Iceland) eruptions in the period 2008–2010. Sampling was conducted by the CARIBIC platform during regular flights at an altitude of 10–12 km as well as during dedicated flights through the volcanic clouds from the eruption of Eyjafjallajökull in spring 2010. Elemental concentrations of the collected aerosol were obtained by accelerator-based analysis. Aerosol from the Eyjafjallajökull volcanic clouds was identified by high concentrations of sulphur and elements pointing to crustal origin, and confirmed by trajectory analysis. Signatures of volcanic influence were also used to detect volcanic aerosol in stratospheric samples collected following the Sarychev and Kasatochi eruptions. In total it was possible to identify 17 relevant samples collected between 1 and more than 100 days following the eruptions studied. The volcanically influenced aerosol mainly consisted of ash, sulphate and included a carbonaceous component. Samples collected in the volcanic cloud from Eyjafjallajökull were dominated by the ash and sulphate component (&sim;45% each) while samples collected in the tropopause region and LMS mainly consisted of sulphate (50–77%) and carbon (21–43%). These fractions were increasing/decreasing with the age of the aerosol. Because of the long observation period, it was possible to analyze the evolution of the relationship between the ash and sulphate components of the volcanic aerosol. From this analysis the residence time (1/e) of sulphur dioxide in the studied volcanic cloud was estimated to be 45 ± 22 days

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“…The latter process involves the partial dissolution of the ash 335 through reactions with the acidic gases (i.e., mainly SO 2 , HCl, and HF) and 336 aerosols (i.e., H 2 SO 4 ) from the plume, followed by precipitation at the ash-liquid 337 interface being responsible of the enrichment of elements with low volatility 338 (lithophilic elements as Ba and Sr) (Delmelle et al, 2007). This is supported by 339 volcanic gas measurements that indicate lithophilic element enrichment in the 340 gaseous and particulate phases emitted during magma degassing processes in 341 volcanic eruptions (Bundschuh et al, 2004;Hinkley, 1994;Hinkley, 1991; 342…”

mentioning

confidence: 92%

Contribution of volcanic ashes to the regional geochemical balance: The 2008 eruption of Chaitén volcano, Southern Chile

Ruggieri

Fernández-Turiel

Saavedra

et al. 2012

Science of The Total Environment

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Fractionation of families of major, minor, and trace metals across the melt-vapor interface in volcanic exhalations

Cited by 71 publications

References 39 publications

Deposition of trace elements from high temperature gases of Satsuma-Iwojima volcano

Deposition of trace elements from high temperature gases of Satsuma-Iwojima volcano

Composition and evolution of volcanic aerosol from eruptions of Kasatochi, Sarychev and Eyjafjallajökull in 2008–2010 based on CARIBIC observations

Contribution of volcanic ashes to the regional geochemical balance: The 2008 eruption of Chaitén volcano, Southern Chile

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