The Melt-PX.xlsx spreadsheet can be downloaded here. Feel free to contact me if you have any questions!


The first worksheet, “Melt-PX”, calculates the extent of isobaric batch melting of one or two pyroxenite compositions entered by the user at a user-specified pressure (P) and temperature (T).
The second worksheet, "Decompression melting" (represented on the figure) models the adiabatic decompression melting of a two-lithology mantle (pyroxenite and peridotite) in which the pyroxenite, depending on its composition, can start to melt before or after the peridotite.
The third worksheet, "ranges" lists all the bulk compositions that were used in our parameterization (in mol.% and in wt.%), as well as the ranges of pressure and temperature.
Both “Melt-PX” and “Decompression Melting” are locked to avoid operating errors. The password to unlock them is pyroxenite.
The model and example of applications are described in detail in: Lambart, S., M. B. Backer, and E. M. Stolper. "The role of pyroxenite in basalt genesis: Melt-PX, a melting parameterization for mantle pyroxenites between 0.9 and 5 GPa". Accepted in Journal of Geophysical Research - Solid Earth.

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