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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 (Sep. 1995), 424–426. DOI:https://doi.org/10.29173/ikc1917.