01570oam 2200445 450 991070783150332120161227152859.0(CKB)5470000002468246(OCoLC)885281970(EXLCZ)99547000000246824620140805d1980 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierFluorspar resources of Africa geologic setting, production, reserves, outlook for future supply, and relation of fluorspar deposits to rift structures and carbonatites /by Ralph E. Van Alstine and Paul G. Schruben[Reston, Va.] :United States Department of the Interior, Geological Survey,1980.Washington :United States Government Printing Office.1 online resource (iv, 25 pages, 1 page of plates) illustrations, mapGeological Survey bulletin ;1487Includes bibliographical references (pages 21-25).Fluorspar resources of Africa FluorsparAfricaFluorsparfastAfricafastFluorsparFluorspar.Van Alstine Ralph Erskine1914-1402176Schruben Paul G.Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910707831503321Fluorspar resources of Africa3479092UNINA