Geological Survey of Canada, 234B-615 Booth Street, Ottawa, ON, Canada K1A 0E9;Tetherless World Constellation, Rensselaer Polytechnic Institute, 110 8th Street, Winslow Building, Troy, NY 12180, United States;Tetherless World Constellation, Rensselaer Polytechnic Institute, 110 8th Street, Winslow Building, Troy, NY 12180, United States