1. Department of Geosciences, Environment and Land Planning, Faculty of Sciences, University of Porto, Rua Campo Alegre, Porto, Portugal; ICT (Institute of Earth Sciences) – Porto pole (Portugal)
2. Departamento de Mineralogía y Petrología, Univ. País Vasco (UPV/EHU), Barrio Sarriena s/n, 48940-Leioa, Spain