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An experimental study of trace element partitioning between zircon and melt as a function of oxygen fugacity

Burnham, Antony D; Berry, Andrew

Description

The partitioning of P, Sc, Ti, Sr, Y, Nb, the rare earth elements (REE), Hf, Ta, Th and U between zircon and a synthetic andesitic melt was determined as a function of oxygen fugacity (fO 2) over a range of fourteen log units, from QFM-8 to QFM+6 (where QFM is the quartz-fayalite-magnetite oxygen buffer) at ∼1300°C and 1atm, using SIMS and LA-ICP-MS. The partition coefficients of Ce and Eu were found to vary systematically with fO 2, relative to those of the other REE, producing Ce and Eu...[Show more]

dc.contributor.authorBurnham, Antony D
dc.contributor.authorBerry, Andrew
dc.date.accessioned2015-12-13T22:40:54Z
dc.identifier.issn0016-7037
dc.identifier.urihttp://hdl.handle.net/1885/78261
dc.description.abstractThe partitioning of P, Sc, Ti, Sr, Y, Nb, the rare earth elements (REE), Hf, Ta, Th and U between zircon and a synthetic andesitic melt was determined as a function of oxygen fugacity (fO 2) over a range of fourteen log units, from QFM-8 to QFM+6 (where QFM is the quartz-fayalite-magnetite oxygen buffer) at ∼1300°C and 1atm, using SIMS and LA-ICP-MS. The partition coefficients of Ce and Eu were found to vary systematically with fO 2, relative to those of the other REE, producing Ce and Eu anomalies similar to those that are characteristic of natural igneous zircon. These anomalies coexist at terrestrial fO 2s and were used to quantify Eu 3+/(Eu 2++Eu 3+) and Ce 4+/(Ce 3++Ce 4+) in the melt. The partition coefficients of the redox invariant trivalent cations are in excellent agreement with lattice strain theory. The values of D REE are related to those determined for natural samples by the expected dependence on temperature. The incorporation of REE 3+ in zircon was independent of the presence of P. D U/D Th was found to vary systematically with fO 2 indicating the presence of U 4+, U 5+ and U 6+ in the melt at terrestrial conditions. D Ti was independent of fO 2 despite an expectation of significant Ti 3+ in the most reduced experiments.
dc.publisherPergamon Press Ltd.
dc.sourceGeochimica et Cosmochimica Acta
dc.subjectKeywords: andesite; fugacity; melt; partition coefficient; partitioning; rare earth element; trace element; zircon
dc.titleAn experimental study of trace element partitioning between zircon and melt as a function of oxygen fugacity
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume95
dc.date.issued2012
local.identifier.absfor040200 - GEOCHEMISTRY
local.identifier.ariespublicationf5625xPUB6932
local.type.statusPublished Version
local.contributor.affiliationBurnham, Anthony D., Imperial College London
local.contributor.affiliationBerry, Andrew, College of Physical and Mathematical Sciences, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.startpage196
local.bibliographicCitation.lastpage212
local.identifier.doi10.1016/j.gca.2012.07.034
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciences
dc.date.updated2016-02-24T09:31:51Z
local.identifier.scopusID2-s2.0-84865553736
CollectionsANU Research Publications

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