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

Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/63109

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**
Contributor(s):	Tailby, Nicholas D (author) ; Trail, Dustin (author); Watson, Bruce (author); Lanzirotti, Antonio (author); Newville, Matthew (author); Wang, Yanling (author)
Publication Date:	2023-05-01
DOI:	10.2138/am-2022-8388
Handle Link:	https://hdl.handle.net/1959.11/63109
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.
Publication Type:	Journal Article
Source of Publication:	The American Mineralogist, 108(5), p. 789-813
Publisher:	Mineralogical Society of America
Place of Publication:	Germany
ISSN:	1945-3027 0003-004X
Fields of Research (FoR) 2020:	370505 Mineralogy and crystallography 370503 Igneous and metamorphic petrology 370507 Planetary geology
Peer Reviewed:	Yes
HERDC Category Description:	C1 Refereed Article in a Scholarly Journal
Appears in Collections:	Journal Article School of Environmental and Rural Science

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