PIETRUSZKA, Dorota1, HANCHAR, John1, TORNOS, Fernando2, WIRTH, Richard3, GRAHAM, Nathan A.4, SEVERIN, Kenneth P.4, VELASCO, Francisco5, STEELE-MACINNIS, Matthew6 and BAIN, Wyatt7, (1)Department of Earth Sciences, Memorial University of Newfoundland, St. John's, NF A1B 3X5, Canada, (2)Instituto de Geociencias (IGEO, CSIC-UCM), Dr Severo Ochoa, 7, Madrid, 28040, Spain, (3)GFZ, German Research Centre for Geosciences, Potsdam, 14473, Germany, (4)Department of Geosciences, University of Alaska Fairbanks, Fairbanks, AK 99775, (5)Departamento de Mineralogía y Petrología, Universidad del País Vasco UPV/EHU, Bilbao, 48080, Spain, (6)Dept of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2E3, Canada, (7)Department of Geology, Lakehead University, 955 Oliver Rd, CB 4064, Thunder Bay, ON P7B 5E1, Canada