Bulletin, Ausgaben 956-959U.S. Government Printing Office, 1948 |
Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
abstract abundant adit altitude America Bull argillite Assoc Belt rocks biotite Bull Lake Bull Lake fault Cabinet Mountains Calkins Callahan Creek Cambrian chalcopyrite Claims allowed Clark Fork contain County deposits dike district Dry Creek stock east electrical epidote exploration feet feldspar field figs galena Gas Jour Geology Geophys geophysical glacial Glacier gold grains gravel gravity Grouse Mountain hornblende Idaho inches incl index map Kootenai River Libby Creek Libby quadrangle magnetic magnetite metadiorite method miles Mineralogist minerals Mines and Geology Montana Oil and Gas orthoclase oxidized Petroleum Geologists Bull places plagioclase Prichard formation prospecting pyrite pyrrhotite quartz monzonite quartz veins quartzite Ravalli formation sandstone seismic sericite shale shear zones sills silver Snowshoe fault sphalerite sulfides surface Survey Bull terrace thickness tion Tulsa U. S. Bur U. S. Geol U. S. patent vertical wall rock Wallace formation