Eu speciation in apatite at 1 bar: An experimental study of valence-state partitioning by XANES, lattice strain, and Eu/Eu* in basaltic systems

Nicholas D Tailby; Dustin Trail; Bruce Watson; Antonio Lanzirotti; Matthew Newville; Yanling Wang

doi:10.2138/am-2022-8388

Eu speciation in apatite at 1 bar: An experimental study of valence-state partitioning by XANES, lattice strain, and Eu/Eu* in basaltic systems

Nicholas D Tailby
, Dustin Trail
, Bruce Watson
, Antonio Lanzirotti
, Matthew Newville
, Yanling Wang

Earth Sciences

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

8 Citations (Scopus)

Abstract

Partition coefficients for rare earth elements (REEs) between apatite and basaltic melt were determined as a function of oxygen fugacity (f_O2; iron-wüstite to hematite-magnetite buffers) at 1 bar and between 1110 and 1175 °C. Apatite-melt partitioning data for R^EE3+ (La, Sm, Gd, Lu) show near constant values at all experimental conditions, while bulk Eu becomes more incompatible (with an increasing negative anomaly) with decreasing f_O2. Experiments define three apatite calibrations that can theoretically be used as redox sensors.

Original language	English
Pages (from-to)	789-813
Journal	The American Mineralogist
Volume	108
Issue number	5
DOIs	https://doi.org/10.2138/am-2022-8388
Publication status	Published - 1 May 2023

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https://hdl.handle.net/1959.11/63109

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title = "Eu speciation in apatite at 1 bar: An experimental study of valence-state partitioning by XANES, lattice strain, and Eu/Eu* in basaltic systems",

abstract = "Partition coefficients for rare earth elements (REEs) between apatite and basaltic melt were determined as a function of oxygen fugacity (fO2; iron-w{\"u}stite to hematite-magnetite buffers) at 1 bar and between 1110 and 1175 °C. Apatite-melt partitioning data for REE3+ (La, Sm, Gd, Lu) show near constant values at all experimental conditions, while bulk Eu becomes more incompatible (with an increasing negative anomaly) with decreasing fO2. Experiments define three apatite calibrations that can theoretically be used as redox sensors. ",

author = "Tailby, \{Nicholas D\} and Dustin Trail and Bruce Watson and Antonio Lanzirotti and Matthew Newville and Yanling Wang",

year = "2023",

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doi = "10.2138/am-2022-8388",

language = "English",

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T1 - Eu speciation in apatite at 1 bar

T2 - An experimental study of valence-state partitioning by XANES, lattice strain, and Eu/Eu* in basaltic systems

AU - Tailby, Nicholas D

AU - Trail, Dustin

AU - Watson, Bruce

AU - Lanzirotti, Antonio

AU - Newville, Matthew

AU - Wang, Yanling

PY - 2023/5/1

Y1 - 2023/5/1

N2 - Partition coefficients for rare earth elements (REEs) between apatite and basaltic melt were determined as a function of oxygen fugacity (fO2; iron-wüstite to hematite-magnetite buffers) at 1 bar and between 1110 and 1175 °C. Apatite-melt partitioning data for REE3+ (La, Sm, Gd, Lu) show near constant values at all experimental conditions, while bulk Eu becomes more incompatible (with an increasing negative anomaly) with decreasing fO2. Experiments define three apatite calibrations that can theoretically be used as redox sensors.

AB - Partition coefficients for rare earth elements (REEs) between apatite and basaltic melt were determined as a function of oxygen fugacity (fO2; iron-wüstite to hematite-magnetite buffers) at 1 bar and between 1110 and 1175 °C. Apatite-melt partitioning data for REE3+ (La, Sm, Gd, Lu) show near constant values at all experimental conditions, while bulk Eu becomes more incompatible (with an increasing negative anomaly) with decreasing fO2. Experiments define three apatite calibrations that can theoretically be used as redox sensors.

U2 - 10.2138/am-2022-8388

DO - 10.2138/am-2022-8388

M3 - Article

SN - 0003-004X

VL - 108

SP - 789

EP - 813

JO - The American Mineralogist

JF - The American Mineralogist

IS - 5

ER -

Eu speciation in apatite at 1 bar: An experimental study of valence-state partitioning by XANES, lattice strain, and Eu/Eu* in basaltic systems

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