Partitioning of Ni between olivine and silicate melt has been determined for compositions in
the system Fo-Ab-An (1 atm) for temperatures ranging from 1250° C to 1450° C. Nickel
concentrations were determined by electron microprobe; concentration levels in the liquids
ranged from 0.1% to 0.5%. Platinum capsules or Pt wire loops were used as containers.
Equilibrium was evaluated from kinetic considerations and by variation of run parameters; it
was documented in one case by a bracketed reversal. No evidence was found for a …

Partition coefficients for nickel between olivine and an aluminous anhydrous silicate melt
have been determined as a function of nickel content under isothermal conditions (1300° C)
at pressures between 1 atm and 20 kbar. The partition coefficients are independent of nickel
content until 1000 ppm Ni is dissolved in the forsterite. No pressure-dependence of this
concentration limit was observed. It is concluded that a maximum of about 1000 ppm Ni can
dissolve in forsterite according to Henry's law. The partition coefficients are pressure …