Experimental determination of F and Cl partitioning between lherzolite and basaltic melt

Célia Dalou; Kenneth T. Koga; Nobumichi Shimizu; Julien Boulon; Jean Luc Devidal

doi:10.1007/s00410-011-0688-2

Experimental determination of F and Cl partitioning between lherzolite and basaltic melt

Célia Dalou
, Kenneth T. Koga
, Nobumichi Shimizu
, Julien Boulon
, Jean Luc Devidal

Earth and Environmental Sciences-Twin Cities

Research output: Contribution to journal › Article › peer-review

118 Scopus citations

Abstract

We experimentally determined F and Cl partition coefficients together with that of 19 trace elements (including REE, U-Th, HFSE and LILE) between basaltic melt and lherzolite minerals: olivine, orthopyroxene, clinopyroxene, plagioclase and garnet. Under conditions from 8 to 25 kbars and from 1,265 to 1,430°C, compatibilities of F and Cl are globally ordered as D ^Cpx/melt > D ^Opx/melt > D ^Grt/melt > D ^Ol/melt > D ^Plag/melt, and D _F ^mineral/melt is larger than D _Cl ^mineral/melt. Four other major results were brought to light. (1) Chlorine partition coefficients positively correlate with the jadeite component in orthopyroxene, and increase of the CaTs component promotes Cl incorporation in clinopyroxene. (2) Variations of fluorine partition coefficients correlate strongly with melt viscosity. (3) F and Cl partition coefficients correlate with the Young's modulus (E ₀) of pyroxene octahedral sites (M sites) and with Raman vibrational modes of pyroxenes. This demonstrates a fundamental interaction between the M site of pyroxenes and the incorporation of F and Cl. (4) We also determined the parameters of the lattice-strain model applied to 3+ cation trace elements for the two M sites in orthopyroxene and clinopyroxene: D ₀ ^M1, D ₀ ^M2, r ₀ ^M1, r ₀ ^M2, E ₀ ^M1 and E ₀ ^M2.

Original language	English (US)
Pages (from-to)	591-609
Number of pages	19
Journal	Contributions to Mineralogy and Petrology
Volume	163
Issue number	4
DOIs	https://doi.org/10.1007/s00410-011-0688-2
State	Published - Apr 2012

Bibliographical note

Funding Information:
Acknowledgments The authors would like to thank P. Wallace and an anonymous reviewer for their thoughtful and critical comments that significantly improved the manuscript, and T. L. Grove for editorial handling. We are also grateful to E. Médard, E. Rose-Koga and M. LeVoyer for helpful discussion on this study. We thank S. Lam-bart and F. Pointud for their help during piston-cylinder experiments. We also thank N. Chatterjee and B. Boyer for their help on the electron microprobe and the SIMS, respectively. CD thanks R. Dennen and E. Rose-Koga for their assistance with English revisions. CD and KK thank D. Andrault for his support on this thesis research. This project was financed by the Agence Nationale de la Recherche of France (grant no. ANR-NT09-454454), and by French CNRS Institut National des Sciences de l’Univers (SEDIT 2008).

Keywords

Basaltic melt
Chlorine
Fluorine
Lattice-strain model
Lherzolite minerals
Partition coefficients
Substitution

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title = "Experimental determination of F and Cl partitioning between lherzolite and basaltic melt",

abstract = "We experimentally determined F and Cl partition coefficients together with that of 19 trace elements (including REE, U-Th, HFSE and LILE) between basaltic melt and lherzolite minerals: olivine, orthopyroxene, clinopyroxene, plagioclase and garnet. Under conditions from 8 to 25 kbars and from 1,265 to 1,430°C, compatibilities of F and Cl are globally ordered as D Cpx/melt > D Opx/melt > D Grt/melt > D Ol/melt > D Plag/melt, and D F mineral/melt is larger than D Cl mineral/melt. Four other major results were brought to light. (1) Chlorine partition coefficients positively correlate with the jadeite component in orthopyroxene, and increase of the CaTs component promotes Cl incorporation in clinopyroxene. (2) Variations of fluorine partition coefficients correlate strongly with melt viscosity. (3) F and Cl partition coefficients correlate with the Young's modulus (E 0) of pyroxene octahedral sites (M sites) and with Raman vibrational modes of pyroxenes. This demonstrates a fundamental interaction between the M site of pyroxenes and the incorporation of F and Cl. (4) We also determined the parameters of the lattice-strain model applied to 3+ cation trace elements for the two M sites in orthopyroxene and clinopyroxene: D 0 M1, D 0 M2, r 0 M1, r 0 M2, E 0 M1 and E 0 M2.",

keywords = "Basaltic melt, Chlorine, Fluorine, Lattice-strain model, Lherzolite minerals, Partition coefficients, Substitution",

author = "C{\'e}lia Dalou and Koga, \{Kenneth T.\} and Nobumichi Shimizu and Julien Boulon and Devidal, \{Jean Luc\}",

note = "Funding Information: Acknowledgments The authors would like to thank P. Wallace and an anonymous reviewer for their thoughtful and critical comments that significantly improved the manuscript, and T. L. Grove for editorial handling. We are also grateful to E. M{\'e}dard, E. Rose-Koga and M. LeVoyer for helpful discussion on this study. We thank S. Lam-bart and F. Pointud for their help during piston-cylinder experiments. We also thank N. Chatterjee and B. Boyer for their help on the electron microprobe and the SIMS, respectively. CD thanks R. Dennen and E. Rose-Koga for their assistance with English revisions. CD and KK thank D. Andrault for his support on this thesis research. This project was financed by the Agence Nationale de la Recherche of France (grant no. ANR-NT09-454454), and by French CNRS Institut National des Sciences de l{\textquoteright}Univers (SEDIT 2008).",

year = "2012",

month = apr,

doi = "10.1007/s00410-011-0688-2",

language = "English (US)",

volume = "163",

pages = "591--609",

journal = "Contributions to Mineralogy and Petrology",

issn = "0010-7999",

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number = "4",

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TY - JOUR

T1 - Experimental determination of F and Cl partitioning between lherzolite and basaltic melt

AU - Dalou, Célia

AU - Koga, Kenneth T.

AU - Shimizu, Nobumichi

AU - Boulon, Julien

AU - Devidal, Jean Luc

N1 - Funding Information: Acknowledgments The authors would like to thank P. Wallace and an anonymous reviewer for their thoughtful and critical comments that significantly improved the manuscript, and T. L. Grove for editorial handling. We are also grateful to E. Médard, E. Rose-Koga and M. LeVoyer for helpful discussion on this study. We thank S. Lam-bart and F. Pointud for their help during piston-cylinder experiments. We also thank N. Chatterjee and B. Boyer for their help on the electron microprobe and the SIMS, respectively. CD thanks R. Dennen and E. Rose-Koga for their assistance with English revisions. CD and KK thank D. Andrault for his support on this thesis research. This project was financed by the Agence Nationale de la Recherche of France (grant no. ANR-NT09-454454), and by French CNRS Institut National des Sciences de l’Univers (SEDIT 2008).

PY - 2012/4

Y1 - 2012/4

N2 - We experimentally determined F and Cl partition coefficients together with that of 19 trace elements (including REE, U-Th, HFSE and LILE) between basaltic melt and lherzolite minerals: olivine, orthopyroxene, clinopyroxene, plagioclase and garnet. Under conditions from 8 to 25 kbars and from 1,265 to 1,430°C, compatibilities of F and Cl are globally ordered as D Cpx/melt > D Opx/melt > D Grt/melt > D Ol/melt > D Plag/melt, and D F mineral/melt is larger than D Cl mineral/melt. Four other major results were brought to light. (1) Chlorine partition coefficients positively correlate with the jadeite component in orthopyroxene, and increase of the CaTs component promotes Cl incorporation in clinopyroxene. (2) Variations of fluorine partition coefficients correlate strongly with melt viscosity. (3) F and Cl partition coefficients correlate with the Young's modulus (E 0) of pyroxene octahedral sites (M sites) and with Raman vibrational modes of pyroxenes. This demonstrates a fundamental interaction between the M site of pyroxenes and the incorporation of F and Cl. (4) We also determined the parameters of the lattice-strain model applied to 3+ cation trace elements for the two M sites in orthopyroxene and clinopyroxene: D 0 M1, D 0 M2, r 0 M1, r 0 M2, E 0 M1 and E 0 M2.

AB - We experimentally determined F and Cl partition coefficients together with that of 19 trace elements (including REE, U-Th, HFSE and LILE) between basaltic melt and lherzolite minerals: olivine, orthopyroxene, clinopyroxene, plagioclase and garnet. Under conditions from 8 to 25 kbars and from 1,265 to 1,430°C, compatibilities of F and Cl are globally ordered as D Cpx/melt > D Opx/melt > D Grt/melt > D Ol/melt > D Plag/melt, and D F mineral/melt is larger than D Cl mineral/melt. Four other major results were brought to light. (1) Chlorine partition coefficients positively correlate with the jadeite component in orthopyroxene, and increase of the CaTs component promotes Cl incorporation in clinopyroxene. (2) Variations of fluorine partition coefficients correlate strongly with melt viscosity. (3) F and Cl partition coefficients correlate with the Young's modulus (E 0) of pyroxene octahedral sites (M sites) and with Raman vibrational modes of pyroxenes. This demonstrates a fundamental interaction between the M site of pyroxenes and the incorporation of F and Cl. (4) We also determined the parameters of the lattice-strain model applied to 3+ cation trace elements for the two M sites in orthopyroxene and clinopyroxene: D 0 M1, D 0 M2, r 0 M1, r 0 M2, E 0 M1 and E 0 M2.

KW - Basaltic melt

KW - Chlorine

KW - Fluorine

KW - Lattice-strain model

KW - Lherzolite minerals

KW - Partition coefficients

KW - Substitution

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DO - 10.1007/s00410-011-0688-2

M3 - Article

AN - SCOPUS:84858448117

SN - 0010-7999

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EP - 609

JO - Contributions to Mineralogy and Petrology

JF - Contributions to Mineralogy and Petrology

IS - 4

ER -

Experimental determination of F and Cl partitioning between lherzolite and basaltic melt

Abstract

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