Constraining the crust and mantle contributions to kimberlite: a multi-phase micro-sampling approach - Malarkey, J.; Pearson, D.G.; Nowell, G.M.; Davidson, J.P.; Ottley, C.J.; Mitchell, R.H.; Kopylova, M.; Kjarsgaard, B. (International Kimberlite Conference: Extended Abstracts, 2008)