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The storage capacity of fluorine in olivine and pyroxene under upper mantle conditions

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The storage capacity of fluorine in olivine and pyroxene under upper mantle conditions. / Grützner, Tobias; Kohn, Simon C.; Bromiley, David W.; Rohrbach, Arno; Berndt, Jasper; Klemme, Stephan.

In: Geochimica et Cosmochimica Acta, Vol. 208, 01.07.2017, p. 160-170.

Research output: Contribution to journalArticle

Harvard

Grützner, T, Kohn, SC, Bromiley, DW, Rohrbach, A, Berndt, J & Klemme, S 2017, 'The storage capacity of fluorine in olivine and pyroxene under upper mantle conditions' Geochimica et Cosmochimica Acta, vol. 208, pp. 160-170. https://doi.org/10.1016/j.gca.2017.03.043

APA

Grützner, T., Kohn, S. C., Bromiley, D. W., Rohrbach, A., Berndt, J., & Klemme, S. (2017). The storage capacity of fluorine in olivine and pyroxene under upper mantle conditions. Geochimica et Cosmochimica Acta, 208, 160-170. https://doi.org/10.1016/j.gca.2017.03.043

Vancouver

Grützner T, Kohn SC, Bromiley DW, Rohrbach A, Berndt J, Klemme S. The storage capacity of fluorine in olivine and pyroxene under upper mantle conditions. Geochimica et Cosmochimica Acta. 2017 Jul 1;208:160-170. https://doi.org/10.1016/j.gca.2017.03.043

Author

Grützner, Tobias ; Kohn, Simon C. ; Bromiley, David W. ; Rohrbach, Arno ; Berndt, Jasper ; Klemme, Stephan. / The storage capacity of fluorine in olivine and pyroxene under upper mantle conditions. In: Geochimica et Cosmochimica Acta. 2017 ; Vol. 208. pp. 160-170.

Bibtex

@article{2694ddcdfd1449429060474ec2f537ea,
title = "The storage capacity of fluorine in olivine and pyroxene under upper mantle conditions",
abstract = "Abstract We present new experimental results on the fluorine storage capacity of olivine and orthopyroxene in the Earth’s mantle. Experiments were performed in the system MgO-SiO2 + MgF2 at temperatures between 1350 °C and 1700 °C and pressures up to 17 GPa. Electron microprobe measurements show that fluorine concentrations in olivine reach up to 5100 µg/g. The storage capacity of fluorine in olivine shows only a small pressure dependence but a strong temperature dependence with a positive correlation between increasing temperature and fluorine storage capacity. Fluorine concentrations found in enstatite are one order of magnitude smaller and reach up to 670 µg/g. Our data show that concentrations of fluorine in fluorine-saturated olivine are in the same range as water concentrations in olivine. Nevertheless, fluorine and water solubility in olivine show opposing behavior with increasing pressure and temperature. The fluorine solubility in olivine increases with increasing temperature but is not much affected by pressure. In contrast, water solubility in olivine has previously been shown to decrease with increasing temperature and increase with increasing pressure. Our experiments show that nominally fluorine-free minerals like forsterite and enstatite are capable of storing the entire fluorine budget of the upper mantle, without the need to invoke accessory phases such as apatite or amphibole.",
keywords = "Fluorine, Olivine, Pyroxene, Upper mantle, Saturation, Storage capacity",
author = "Tobias Gr{\"u}tzner and Kohn, {Simon C.} and Bromiley, {David W.} and Arno Rohrbach and Jasper Berndt and Stephan Klemme",
year = "2017",
month = "7",
day = "1",
doi = "10.1016/j.gca.2017.03.043",
language = "English",
volume = "208",
pages = "160--170",
journal = "Geochimica et Cosmochimica Acta",
issn = "0016-7037",
publisher = "Elsevier",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - The storage capacity of fluorine in olivine and pyroxene under upper mantle conditions

AU - Grützner, Tobias

AU - Kohn, Simon C.

AU - Bromiley, David W.

AU - Rohrbach, Arno

AU - Berndt, Jasper

AU - Klemme, Stephan

PY - 2017/7/1

Y1 - 2017/7/1

N2 - Abstract We present new experimental results on the fluorine storage capacity of olivine and orthopyroxene in the Earth’s mantle. Experiments were performed in the system MgO-SiO2 + MgF2 at temperatures between 1350 °C and 1700 °C and pressures up to 17 GPa. Electron microprobe measurements show that fluorine concentrations in olivine reach up to 5100 µg/g. The storage capacity of fluorine in olivine shows only a small pressure dependence but a strong temperature dependence with a positive correlation between increasing temperature and fluorine storage capacity. Fluorine concentrations found in enstatite are one order of magnitude smaller and reach up to 670 µg/g. Our data show that concentrations of fluorine in fluorine-saturated olivine are in the same range as water concentrations in olivine. Nevertheless, fluorine and water solubility in olivine show opposing behavior with increasing pressure and temperature. The fluorine solubility in olivine increases with increasing temperature but is not much affected by pressure. In contrast, water solubility in olivine has previously been shown to decrease with increasing temperature and increase with increasing pressure. Our experiments show that nominally fluorine-free minerals like forsterite and enstatite are capable of storing the entire fluorine budget of the upper mantle, without the need to invoke accessory phases such as apatite or amphibole.

AB - Abstract We present new experimental results on the fluorine storage capacity of olivine and orthopyroxene in the Earth’s mantle. Experiments were performed in the system MgO-SiO2 + MgF2 at temperatures between 1350 °C and 1700 °C and pressures up to 17 GPa. Electron microprobe measurements show that fluorine concentrations in olivine reach up to 5100 µg/g. The storage capacity of fluorine in olivine shows only a small pressure dependence but a strong temperature dependence with a positive correlation between increasing temperature and fluorine storage capacity. Fluorine concentrations found in enstatite are one order of magnitude smaller and reach up to 670 µg/g. Our data show that concentrations of fluorine in fluorine-saturated olivine are in the same range as water concentrations in olivine. Nevertheless, fluorine and water solubility in olivine show opposing behavior with increasing pressure and temperature. The fluorine solubility in olivine increases with increasing temperature but is not much affected by pressure. In contrast, water solubility in olivine has previously been shown to decrease with increasing temperature and increase with increasing pressure. Our experiments show that nominally fluorine-free minerals like forsterite and enstatite are capable of storing the entire fluorine budget of the upper mantle, without the need to invoke accessory phases such as apatite or amphibole.

KW - Fluorine

KW - Olivine

KW - Pyroxene

KW - Upper mantle

KW - Saturation

KW - Storage capacity

U2 - 10.1016/j.gca.2017.03.043

DO - 10.1016/j.gca.2017.03.043

M3 - Article

VL - 208

SP - 160

EP - 170

JO - Geochimica et Cosmochimica Acta

T2 - Geochimica et Cosmochimica Acta

JF - Geochimica et Cosmochimica Acta

SN - 0016-7037

ER -