1. Environmental Hydrogeochemistry; Geological Survey of Spain (IGME); Madrid Spain
2. Department of Geological Resources; Geological Survey of Spain (IGME); Madrid Spain
3. Materials Characterization Laboratory (MCL); The Pennsylvania State University; University Park PA USA
4. College of Natural Sciences; Bangor University; Bangor UK
5. Department of Mineralogy and Petrology; Faculty of Science and Technology; The Basque Country University (UPV/EHU); Bilbao Spain
6. Department of Civil and Environmental Engineering; The Pennsylvania State University; University Park PA USA