1. Harquail School of Earth Sciences, Laurentian University, Sudbury, ON P3E 2C6, Canada
2. Department of Earth Sciences, St. Francis Xavier University, Antigonish, NS B2G 2W5, Canada
3. Geological Survey of Canada, 1 Challenger Drive, Dartmouth, NS B2Y 4A2, Canada
4. School of the Environment, University of Windsor, Windsor, ON N9B 3P4, Canada
5. Mineral Exploration Research Centre Isotope Geochemistry Lab, Laurentian University, Sudbury, ON P3E 2C6, Canada
6. Department of Earth Sciences, Memorial University, St. John's, NL A1B 3X5, Canada
7. Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada