In March 2018, three researchers from GET lab in Toulouse, Stéphanie Brichau, Stéphanie Duchene, Guillaume Estrade, one PhD student from GET, Steven Kia Kahou, and a researcher from Geosciences Rennes, Marc Pujol, met their colleagues Rodrigo Riquelme and Eduardo Campo from UCN, Antofagasta, for a field trip in different mining districts in northern Chile in order to sample supergene copper-bearing minerals.