01792oam 2200457 450 991070417460332120151123162153.0(CKB)5470000002437916(OCoLC)886560198(EXLCZ)99547000000243791620140812d1987 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierPetrographic and scanning electron microscope studies of samples from the Roberts Mountains and Popovich formations, Carlin Mine area, Eureka County, Nevada /by Augustus K. Armstrong [and three others][Reston, Va.] :Department of the Interior, U.S. Geological Survey,1987.Washington :United States Government Printing Office.1 online resource (iii, 23 pages) illustrations (some color), mapsU.S. Geological Survey bulletin ;1684Title from title screen (viewed Aug. 11, 2014).Includes bibliographical references.PetrologyNevadaCarlin Mine RegionPhotomicrographyGold oresNevadaCarlin Mine RegionRoberts Mountains Formation (Nev. and Utah)Popovich Formation (Nev.)PetrologyPhotomicrography.Gold oresArmstrong Augustus K.1386763Geological Survey (U.S.),COPCOPOCLCOGPOBOOK9910704174603321Petrographic and scanning electron microscope studies of samples from the Roberts Mountains and Popovich formations, Carlin Mine area, Eureka County, Nevada3461485UNINA