Global carbon dioxide emissions are continuously increasing leading to a global increment in temperature with potential massive consequences for our planet and society. This pilot project aims to investigate the reactions occurring at hydrothermal conditions in the CO2-sulfides systems in order to discover innovative ways to mitigate the release of anthropogenic CO2 into the atmosphere. The project will address this topic through a series of experiments that will provide results on the stability and reaction pathways of supercritical and solid CO2 with pyrite (FeS2). The results will pave the way for future research in multiple, deeply interconnected fields since the project will not only help to further clarify the potential applications of CO2-sulfide systems for the capture of CO2 but will also provide new information to understand the behaviour of the CO2-sulfide systems at high pressures and temperatures.