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Mineral-melt partition coefficients and the problem of multiple substitution mechanisms: insights from the rare earths in forsterite and protoenstatite

Burnham, Antony; O'Neill, Hugh


A trace element may substitute into a mineral by more than one substitution mechanism, complicating the thermodynamic description of its partition coefcients. In order to understand this phenomenon better, the mineral/melt partition coefcients for all 14 rare earth elements (REE) plus Y and Sc were measured experimentally for coexisting forsterite and protoenstatite in the system CaO-MgO-SiO2-Al2O3-TiO2 at 1406 °C and atmospheric pressure. For both phases, the results show these large trivalent...[Show more]

CollectionsANU Research Publications
Date published: 2019-11-25
Type: Journal article
Source: Contributions to Mineralogy and Petrology
DOI: 10.1007/s00410-019-1636-9
Access Rights: Open Access


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