Experimental and Observational Constraints on Halogen Behavior at Depth

Halogens are volatile elements present in trace amounts the Earth’s crust, mantle, and core. They show behavior tend to be incompatible except for fluorine, which makes them key tracers of fluid-mediated and/or melt-mediated chemical transport processes. Even small quantities halogens can profoundly affect many physicochemical processes such as melt viscosity, temperature stability mineral phases, aqueous fluids, or composition atmosphere through magma degassing. Experiments allow us simulate deep-Earth conditions. A comparison experimental results with natural rocks helps unravel role interior.