Which MELTS version should you use?

Video explainer

In this four-minute video, Mark S. Ghiorso explains the different versions of MELTS.

Decision tree

Use this decision tree to help determine the best version of MELTS for your project.

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. spacer spacer spacer spacer spacer spacer