Introduction to thermodynamic modeling

An introduction to thermodynamic modeling of fluid-rock interaction and ore-forming processes using the GEMS code package

Dates: 8 Dec and 9 Dec, 14:00-18:00 Central European Time

Organizers: Alexander Gysi (New Mexico Bureau of Geology and Mineral Resources), Nicole Hurtig, (New Mexico Tech) Dan Miron (Paul Scherrer Institute)

This practical workshop aims to introduce attendees to the use of GEM-Selektor ( and the MINES thermodynamic database ( for simulating fluid-rock equilibria in hydrothermal systems. The workshop covers a series of case studies and hands-on tutorials, including the reaction path of feldspar-water, the solubility ore minerals and complexation of metals in aqueous solution, mineral solid solutions, the alteration of basaltic rocks and 1D reactive transport using the GEM2MT module. The workshop will also include short presentations about of fluid-rock interaction modeling, the GEMSFITS program for optimizing parameters against experimental data, and an overview of the ThermoEcos project ( for managing thermodynamic data.

This event will be hosted by the organizers on the Zoom platform.


Member $80 $40
Non-member $100 $50


This workshop has reached capacity and registration is now closed.


Students and professionals from countries classified by the World Bank as having low-income or lower-middle-income economies may apply for free registration. Please contact us with your name, institution, and country to apply.

Geochemical Society members automatically receive the discounted member rates. European Association of Geochemistry (EAG) and Mineralogical Society of America (MSA) members can receive the discount by sending us a message with your name and society member number.

Code of Conduct

The GS strives to provide a respectful and comfortable learning environment for everyone who participates. By registering for the workshop, you agree to abide by the code of conduct.

Cancellation Policy

You may cancel your registration until 30 November 2020 for a refund, minus a processing fee of $25. No refunds will be made for cancellations made after 30 November. One substitution is allowed for no charge. To transfer your registration to someone else, please contact us.