01882oam 2200505 450 991070692400332120180425100141.0(CKB)5470000002460240(OCoLC)896810746(OCoLC)995470000002460240(EXLCZ)99547000000246024020141123d1980 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierAbundance and distribution of thorium in the carbonatite stock at Iron Hill, Powderhorn District, Gunnison County, Colorado /by Theodore J. Armbrustmacher; prepared in cooperation with the Department of EnergyWashington :United States Department of the Interior, Geological Survey,1980.1 online resource (iii, B11 pages) illustrations, mapsGeological Survey professional paper ;1049-BGeology and resources of thorium in the United StatesTitle from title screen (viewed October 9, 2014).Includes bibliographical references (page B11).CarbonatitesColoradoGunnison CountyThoriumCarbonatitesfastThoriumfastColoradoGunnison CountyfastCarbonatitesThorium.Carbonatites.Thorium.Armbrustmacher Theodore J.1946-1402164Geological Survey (U.S.),United States.Department of Energy.COPCOPOCLCOOCLCFGPOBOOK9910706924003321Abundance and distribution of thorium in the carbonatite stock at Iron Hill, Powderhorn District, Gunnison County, Colorado3495545UNINA