01877oam 2200397Ia 450 991070819370332120140329023357.0(OCoLC)761220098(MiFhGG)NCCO2012866(CKB)4920000002447125(EXLCZ)99492000000244712520790606d1896 ua 0engur|n||||||||nGeology of the Castle Mountain mining district, Montanaby Walter Harvey Weed and Louis Valentine PirssonWashington Govt. Print. Off18961 online resource (164 p. , [17] plates) ill., folded mapBulletin of the United States Geological Survey ;no. 139Nineteenth Century Collections Online: Science, Technology, and Medicine, Part IIncludes index.Reproduction of the original from the Library of Congress.Includes bibliographical references.Introduction --Topography --Structural geology and geological history of Castle Mountain --Stratified Rocks --Igneous rocks --Microscopical petrography --Microscopical petrography of the extrusive rocks --General petrology of the Castle Mountain district --Glaciation of Castle Mountain --Economic geology --Mineralogy.Bulletin of the United States Geological Survey ;no. 139.Nineteenth Century Collections Online: Science, Technology, and Medicine, Part I.GeologyMontanaGeologyWeed Walter Harvey1862-1944.819826Pirsson Louis V(Louis Valentine),1860-1919.1394417Geological Survey (U.S.)MIGCLUtOrBLWBOOK9910708193703321Geology of the Castle Mountain mining district, Montana4129975UNINA