Bulletin of the United States Geological Survey

amount analyses anthracite Arkose average basin bed rock belt Bering River bituminous body Bull carry cassiterite cent chalcopyrite Chickaloon Coal Creek coal field coast coke Cook Inlet Copper River country rock crosscut deposits depth diabase dike diorite district ditch east elevation epidote exposed extends fault feet in width Fork fuel Geological Glacier gold granite gravels greenstone group of claims head Herendeen Bay inches Included in sample Inlet intrusive Island Kushtaka lignite limestone located lode marble Matanuska Matanuska River miles mining mouth Nome occur outcrop pay streak petroleum places Prince William Sound probably production prospecting pyrite pyrrhotite quartz quartz veins reconnaissance reported Rept sandstone schist seams season Section Seward Peninsula shaft Shale Shale floor side slate sluice southeastern Alaska stream strike sulphides surface Survey Tanana thickness tributary tunnel U. S. Geol upper Valdez valley Yakutat Yukon