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Pearson, D.; Kelley, S.; Pokhilenko, N.; Boyd, F. 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. IKC abstracts 1995, 6, 424-426.