The activities aim at improving our understanding of mechanisms of concentration and deposition of rare metals (W, Sn, Nb, Ta, Li) in granite-related deposits of the European Variscan Belt. The essential part of the activities concentrates on two targets from Central Portugal, Argemela and Panasqueira, where work is performed in close collaboration with the Porto team. A less important part of activities, performed mostly for comparative purposes, concerns Beauvoir and Montebras (French Massif Central). Argemela is a representative example of a rare-metal granite and Panasqueira is a world-class W deposit. The Argemela granite is a natural laboratory to study enrichments in Sn, Nb, Ta, P, Li but also W during magmatic processes, and also the transfer of metals and fluids from crystallizing granites to country rocks. The Panasqueira deposit offers a unique opportunity to study the hydrodynamics of fluid circulation, metal transport, deposition and alteration in and around a granitic pluton.