Abstract
The partitioning behaviour for the trace elements Rb, Sr, Ba, Th, U, Zr, Hf, Nb, Ta, La, Ce, Sm, Ho, Lu and Y between immiscible Fe-rich, Si-poor and Fe-poor, Si-rich silicate liquids in the system K 2O-Al 2O 3-SiO 2-FeO-Fe 2O 3-P 2O 5 at 1265°C, 1 atm was determined as a function of oxygen fugacity in the range of log f O2 from −8.7 to −5.7. The miscibility gap for all major elements is enlarged and the partition coefficients for Sr, Ba and U increase and Rb decreases with increasing f O2. The partition coefficients for the remaining trace elements stay nearly constant. Thus it is predicted that the partitioning of Sr, Ba, U and Rb between crystals and melt will show increasing dependence on melt composition as f O2 is increased, but the compositional dependence of the crystal/melt partition coefficients for the other elements will remain unchanged.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
