Which MELTS version should you use?

Do you want to model mantle melting of peridotite or pyroxenite bulk compositions between 1 GPa and 3 GPa? YES Use pMELTS v. 5.6.1.
Download for Mac OS X or Linux.
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Do you want to model crystallization over the pressure interval 0-2 GPa using bulk compositions corresponding to natural magmas? NO No version of MELTS can solve your problem.
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Is a fluid phase (i.e., a volatile phase) present, or does the melt contain dissolved H2O or CO2? NO Use rhyolite-MELTS v.1.0.x.
Download for Mac OS X or Linux.
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Are you trying to model quartz saturated magmas, i.e., magmas that terminally crystallize at the quartz-, two-feldspar-, fluid-saturated ternary minimum? NO Use rhyolite-MELTS v.1.2.x.
Download for Mac OS X or Linux.
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Use rhyolite-MELTS v.1.1.x.
Download for Mac OS X or Linux.
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