Hydrothermal Alteration Systems as Analogues of Nuclear Waste Repositories in Granitic Rocks An example: The Langenberg hydrothermal system

The results of this partial study on element distribution of a hydrothermally altered granite in the Langenberg site lead to conclude on : probable mobility for most part of major elements except SiO2 and Al2O3; a pronounced mobility for light REE (La, Ce); a weak mobility for U; no or weak mobility for heavy REE.