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.