In the frame of COPEDIM, Marc Poujol, Nathan Cogné (Geosciences Rennes) and David Chew (Trinity College Dublin U) spent 3 days in GET in July, Toulouse, for discussions around the results obtained by  Steven Kahou on copper-bearing minerals dating (PhD dir. S. Brichau, S. Duchene, E. Campos)  in GET, Rennes and Dublin, and around methodological developments. These discussions included Mathieu Leisen, Stephanie Brichau, Stephanie Duchene, and François Xavier d’Abzac from GET.