This research program has been established through funding by the DFG for up to six years starting in 2020.
Coordinator
Prof. Max Wilke, Institut für Geowissenschaften, Universität Potsdam
Niobium, zirconium, titanium, and rare earth elements in alkaline silica-undersaturated magmas: experimental determination of solubility, complexation and phase relations and implications for the formation of magmatic Nb-Zr-REE deposits
Experimental studies on Mo mobility in high-pressure high-temperature fluids of complex compositions
Contact
Dr. Christian Schmidt
Partners
Prof. Stephan Klemme, Institut für Mineralogie, Universität Münster
Dr. Maria Kokh, Institut für Geowissenschaften, Universität Potsdam
Prof. Max Wilke, Institut für Geowissenschaften, Universität Potsdam
Experimental determination of B-isotope fractionation between silicate melts and aqueous fluids, with application to understanding magmatic-hydrothermal ore genesis
The magmatic-hydrothermal transition is still a critical gap in the understanding of granite-related ore deposits. To fill this gap this DOME-project (SPP-2238) focuses on the interaction processes between granitic melt and fluid. Boron is thought to be one of the most efficient tools to quantify processes of fluid-melt-interaction and is used in recent projects for similar objectives in basaltic and rhyolitic melts. The boron isotope fractionation between granitic melts and the fluids derived from them is supposed to explain the influence of external fluids and detect the isotope shift caused by fluid exsolution. Our experimental project is aimed to constrain melt-fluid B-isotope fractionation and combine these data with the characterization of the B-environment in melts by the use of various spectroscopic methods and with modelling. Tourmaline is present in different ore-deposit types (Figure 1). Based on our experimental data, the B-isotopic composition of tourmaline derived from magmatic-hydrothermal interactions will help for better constrain the ore-forming processes in these environments.
Contact
Dr. Robert Trumbull
Dr. Bernd Wunder
Jakob Rauscher
Partners
Prof. Sandro Jahn, Institut für Geologie und Mineralogie, Universität zu Köln
Prof. Max Wilke, Institut für Geowissenschaften, Universität Potsdam
