Solubility of Rock in Steam Atmospheres of Planets

  title={Solubility of Rock in Steam Atmospheres of Planets},
  author={Bruce Jr. Fegley and Nathan S Jacobson and Kathleen B. Williams and J. M. C. Plane and Laura Schaefer and Katharina Lodders},
  journal={arXiv: Earth and Planetary Astrophysics},
Extensive experimental studies show all major rocky elements (Si, Mg, Fe, Ni, Ca, Al, Na, K) dissolve in steam to a greater or lesser extent. We use these results to compute chemical equilibrium abundances of rocky element-bearing gases in steam atmospheres equilibrated with silicate magma oceans. Rocky elements partition into steam atmospheres as volatile hydroxide gases and via reaction with HF or HCl as volatile halide gases in much larger amounts than expected from their vapor pressures… Expand
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