02007oam 2200517 450 991070779520332120161021142635.0(CKB)5470000002466592(OCoLC)886546947(EXLCZ)99547000000246659220140812d1974 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierArgentian cryptomelane and bromargyrite in volcanic rocks near Silver Cliff, Colorado /by Fred A. Hildebrand and Elwin L. Mosier[Washington, D.C.] :United States Department of the Interior, Geological Survey,1974.Washington :United States Government Printing Office.1 online resource (iii, 23 pages) illustrationsGeological Survey bulletin ;1382-CContributions to economic geologyTitle from title screen (viewed August 4, 2014)."This report describes silver minerals, especially a new variety of cryptomelane, and explains why unmined silver ores remain at the surface in this old mining district."Includes bibliographical references (page 23).Silver oresColoradoSilver CliffMines and mineral resourcesColoradoSilver CliffMines and mineral resourcesfastSilver oresfastColoradoSilver ClifffastSilver oresMines and mineral resourcesMines and mineral resources.Silver ores.Hildebrand Fred A.1414390Mosier Elwin L.Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910707795203321Argentian cryptomelane and bromargyrite in volcanic rocks near Silver Cliff, Colorado3513497UNINA