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Geochemical Journal
Geochemical Journal An open access journal for geochemistry
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Chemical composition of the solid phase formed at 20kb from a melt with basaltic chemical composition

Noboru Nakamura, Akimasa Masuda
Geochemical Journal, Vol. 10, No. 2, P. 79-83, 1976

ABSTRACT

Major elements Mg, Ca, Fe, Mn, K and Al were determined for the natural silicate system, for which the partition coefficients of REE, Ba and Sr were obtained by TANAKA and NISHIZAWA (1975). The regular aspects of variation in concentrations of elements for three runs of 20kb experiment are discussed. Also it is shown that the formed mineral is aluminous clinopyroxene and that the REE partition coefficients appear to have some bearing on Al2O3 content of the formed solid phase. Discussions are given to implications of exceedingly high values of apparent partition coefficients for some trace elements in this experiment.

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