Isotope fractionation of neon during stepheating extraction?: a comment on Re-interpretation of the existence of a primitive plume under Australia based on neon isotope fractionation during step heating by Gautheron and Moreira (2003)
Using a Rayleigh distillation fractionation model, we calculate that the maximum isotope fractionation potentially achievable is less than 5% during the early stages of gas release from a sample. Our calculation corrects the erroneous conclusions of Gautheron and Moreira (2003), who re-interpreted the plume-like neon isotopic compositions found in metasomatic apatite from a south-eastern Australian xenolith (Matsumoto et al., 1997) to be the result of Rayleigh-type isotope fractionation of...[Show more]
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