02431oam 2200721 450 991071185930332120190205074917.0(CKB)5470000002487488(OCoLC)953694613(OCoLC)995470000002487488(EXLCZ)99547000000248748820160718e19691969 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierRutile and topaz in Precambrian gneiss, Jefferson and Clear Creek Counties, Colorado /by Douglas M. Sheridan, Richard B. Taylor, and Sherman P. MarshWashington :United States Department of the Interior, Geological Survey,1968.Washington, D.C. :Government Printing Office,1969.1 online resource (iii, 7 pages) illustrations, mapGeological Survey circular ;567Includes bibliographical references (page 7).Geology, StratigraphicPrecambrianGneissColoradoClear Creek CountyGneissColoradoJefferson CountyRutileColoradoClear Creek CountyRutileColoradoJefferson CountyTopazColoradoClear Creek CountyTopazColoradoJefferson CountyGeology, StratigraphicfastGneissfastPrecambrian Geologic PeriodfastRutilefastTopazfastColoradoClear Creek CountyfastColoradoJefferson CountyfastGeology, StratigraphicGneissGneissRutileRutileTopazTopazGeology, Stratigraphic.Gneiss.Precambrian Geologic Period.Rutile.Topaz.Sheridan Douglas M.1921-1393719Marsh Sherman P.1935-Taylor Richard B(Richard Bartlett),Geological Survey (U.S.),COPCOPOCLCOOCLCFOCLCAGPOBOOK9910711859303321Rutile and topaz in Precambrian gneiss, Jefferson and Clear Creek Counties, Colorado3450137UNINA