Volcanic Origin of Alkali Halides on IoThe recent observation of NaCl (gas) on Io confirms our earlier prediction that NaCl is produced volcanically. Here we extend our calculations by modeling thermochemical equilibrium of O, S, Li, Na, K, Rb, Cs, F, Cl, Br, and I as a function of temperature and pressure in a Pele-like volcanic gas with O/S/Na/Cl/K = 1.518/1/0.05/0.04/0.005 and CI chondritic ratios of the other (as yet unobserved) alkalis and halogens. For reference, the nominal temperature and pressure for Pele is 1760 plus or minus 210 K and 0.01 bars based on Galileo data and modeling.
Document ID
20030110827
Acquisition Source
Headquarters
Document Type
Conference Paper
Authors
Schaefer, L. (Washington Univ. Saint Louis, MO, United States)
Fegley, B., Jr. (Washington Univ. Saint Louis, MO, United States)