Objective A systematic experimental study will be conducted to obtain quantitative information on the distribution of Cu, Au and S between andesitic and basaltic silicate melts and volatile phases. The experiments will be carried out in cold seal and internally heated pressure vessels, at various conditions characteristic of upper crustal magma reservoirs. The fluid phase will be trapped as synthetic fluid inclusions in mafic minerals or in fine grained mineral traps at the experimental run conditions. The chemical composition of the phases and the speciation of the elements will be analyzed using LA-ICPMS and X-ray Absorption Spectroscopy, respectively. From these data, the partition coefficients of S, Cu and Au between the fluid and the melt will be calculated and interpreted in a thermodynamic framework. The results will be used to build mass transfer models to assess the efficiency of the spatial redistribution of S, Cu and Au through volatiles within complex magmatic reservoirs at various physical and chemical conditions. These models will lead to a better understanding of processes responsible for formation of porphyry-type ore deposits and the controls on the composition of emitted gases by active volcanoes. Fields of science natural sciencesearth and related environmental sciencesgeologyvolcanologynatural sciencesphysical sciencesopticsspectroscopyabsorption spectroscopy Keywords Earth science Economic geology Petrochemistry Petrology Programme(s) FP7-PEOPLE - Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Topic(s) PEOPLE-2007-4-1.IOF - Marie Curie Action: "International Outgoing Fellowships for Career Development" Call for proposal FP7-PEOPLE-2007-4-1-IOF See other projects for this call Funding Scheme MC-IOF - International Outgoing Fellowships (IOF) Coordinator EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH EU contribution € 237 981,03 Address Raemistrasse 101 8092 Zuerich Switzerland See on map Region Schweiz/Suisse/Svizzera Zürich Zürich Activity type Higher or Secondary Education Establishments Administrative Contact Carmen Sanchez-Valle (Prof.) Links Contact the organisation Opens in new window Website Opens in new window Total cost No data