Utilization of olivine macrocryst grain size and abundance data as a proxy for diamond size and grade in pyroclastic deposits of the Orion South kimberlite, Fort à la Corne, Saskatchewan, Canada - Harvey, S.; Read, G.; DesGagnes, B.; Shimell, M.; Danoczi, J.; van Breugel, B.; Fourie, L.; Stilling, A. (International Kimberlite Conference: Extended Abstracts, 2012)