1. Queen's Facility for Isotope Research, Department of Geological Sciences and Geological Engineering, Queen's University, Kingston, Ontario, Canada K7L 3N6
2. Department of Physics, Engineering Physics & Astronomy, Arthur B. McDonald Canadian Astroparticle Physics Research Institute, Queen's University, Kingston, Ontario, Canada K7L 3N6
3. Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario, Canada K1A 0E8