Pearson, D., Kelley, S., Pokhilenko, N. and Boyd, F. (1995) “Laser 40Ar/39Ar analyses of phlogopites from kimberlites and thier xenoliths: constraints on eruption ages of Southern African and Siberian kimberlites and mantle volatile compositions”, International Kimberlite Conference: Extended Abstracts, 6(1), pp. 424–426. doi: 10.29173/ikc1917.