Iron Partitioning in Earth's Mantle: Toward a Deep Lower Mantle Discontinuity

@article{Badro2003IronPI,
  title={Iron Partitioning in Earth's Mantle: Toward a Deep Lower Mantle Discontinuity},
  author={J. Badro and G. Fiquet and F. Guyot and J. Rueff and V. Struzhkin and G. Vank{\'o} and G. Monaco},
  journal={Science},
  year={2003},
  volume={300},
  pages={789 - 791}
}
We measured the spin state of iron in ferropericlase (Mg0.83Fe0.17)O at high pressure and found a high-spin to low-spin transition occurring in the 60- to 70-gigapascal pressure range, corresponding to depths of 2000 kilometers in Earth's lower mantle. This transition implies that the partition coefficient of iron between ferropericlase and magnesium silicate perovskite, the two main constituents of the lower mantle, may increase by several orders of magnitude, depleting the perovskite phase of… Expand
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