Rutile and titanite as the minerals for dating kimberlite emplacement age: an example of Amakinskaya and Taezhnaya pipes of Mirny field, Siberia - Agashev, A.M.; Orihashi, Y.; Rotman, A.Y.; Pokhilenko, N.P.; Serov, I.V.; Tolstov, A.V. (International Kimberlite Conference: Extended Abstracts, 2012)