Assist. Prof. Dr. Peter Waldner is an established researcher in geochemistry and materials thermodynamics, with a strong focus on phase equilibria, Gibbs energy modeling, and high-temperature mineral systems. His scholarly output comprises 32 research documents, which have received 636 citations from 501 citing publications, resulting in an h-index of 12, indicating consistent academic influence. His work centers on the Cu–Fe–S system, addressing solid and liquid solution behavior through advanced thermodynamic modeling techniques. Notable contributions include Gibbs energy modeling of high-temperature bornite and intermediate solid solutions, enabling accurate calculation of phase equilibria at elevated temperatures. Published in leading journals such as Chemical Geology and Journal of Phase Equilibria and Diffusion, his research provides critical insights into mineral stability, metallurgical processes, and geochemical systems. Overall, his work significantly advances the understanding of thermodynamic properties governing complex sulfide systems and their applications in Earth and materials sciences.