VolatileCalc 1.1. This software calculates H2O-CO2-melt equilibrium for the rhyolite and basalt systems. The software is written as Visual Basic for Applications Macros within Microsoft Excel. PC Users Right Click to download. Macintosh Users should Option-Click to download. You will have to enable macros to use the software.

VolatileCalc 2.0. Revised for compatibility with Excel for Mac 2011 and other modern versions of Excel. Thanks to Matt Steele-MacInnis for the debugging!

The reference for the software is:

Newman, S., Lowenstern, J.B., 2002, VolatileCalc: a silicate melt-H2O-CO2 solution model written in Visual Basic for Excel: Computers and Geosciences vol. 28 no. 5, pp. 597-604.

Examples of output from VolatileCalc. Isobars represent locus of values for dissolved H2O and CO2 in rhyolitic melt in equilibrium with H2O-CO2 vapor at 800°C and selected pressures. Similarly, isopleths represent locus of rhyolitic melt compositions in equilibrium with given vapor compositions (20, 50 and 80 mol% H2O shown here) at 800°C.

CIPW Norm Calculation Software written as a Visual Basic for Applications Macro within Microsoft Excel. PC Users Right Click to download. Macintosh Users should Option-Click to download. You will have to enable macros to use the software.

 


| Melt Inclusions | Lowenstern | Volcano Hazards | USGS |