Introduction to stable phase equilibrium modelling for magmatic system using MAGEMin.
Organisers:
- Nicolas Riel (JGU, Mainz, Germany)
MAGEMin is a Gibbs energy minimization solver package, which computes the most stable assemblage for a given bulk rock composition and pressure/temperature condition. It also returns parameters such as melt fraction or density, which can be combined with geodynamic/petrological tools using Julia to simulate, for example, the evolving chemistry of a crystallising melt.
During the workshop participants will first learn how to install and use MAGEMinApp (GUI) to:
- Generate Pressure-Temperature iso-chemical phase diagrams (PT), and Pressure or Temperature or Pressure-Temperate path versus variable composition phase diagrams (PX, TX, PT-X). Compute trace-elements partitioning and zircon saturation diagrams.
- Setup initial grid resolution and iteratively increase refinement of the computed diagrams.
- Change and adjust colormap, add iso-contours and export vector format figures.
- Export single point information and full diagram information to files (e.g., CSV).
- Compute Pressure Temperature paths, including fractional melting and crystallization paths.
In a second stage you will learn how to install MAGEMin_C and apply it to targeted stable phase equilibrium computation. Several example of applications will be introduced:
- Single point and multipoint minimizations using available database.
- Extraction and visualization of stable phase prediction outputs.
- Isentropic batch melting path applied to KLB-1 peridotite.