SPP 2238 - Dynamics of Ore Metals Enrichment - DOME

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

DOME homepage


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

Contact

Dr. Christian Schmidt

Anna Nikolenko

Partner

Dr. Ilya Veksler, Universität Potsdam und Helmholtz-Zentrum Potsdam, Deutsches GeoForschungsZentrum GFZ


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 (DOME, SPP-2238)

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.

Illustration of ore-deposit types (red) with tourmaline as a common gangue mineral (Slack and Trumbull, 2011), often related to magmatic-hydrothermal transition during the formation.

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