Edgar, A.D. Kamafugites: rare potassic volcanic rocks - Winnipeg, Manitoba Mineralogical Association of Canada 1996 - pp. 153-173 ilus., maps. - Mineralogical Association of Canada. Short Course Series . Subjects--Topical Terms: COMPOSICION POTASICAKAMAFUGITAROCAS ULTRAMAFICASROCAS VOLCANICAS Universal Decimal Class. No.: 552.33/M66|2