Annual Report - Geological and Natural History Survey of Minnesota, Volume 24 (Google eBook)
Geological and Natural History Survey of Minnesota., 1899 - Animals
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amygdaloidal Animikie ANNUAL REPORT anorthosyte appears Archean argillyte augite bands Beaver Bay bedding biotite black diabase boulders coarse coarser conglomerate conglomeratic crystalline diabase dike east Elftman feet feldspar Fillmore fine-grained finer fossils fragments gabbro Geol geologist geology gneiss grained Grand Marais granite gray graywacke green greenish greenstone grit Gunflint lake hill hornblende igneous inches iron island jaspilyte Kawishiwi river Keewatin Kekequabic lake Keweenawan Lake Superior lake XVI line of sec magnetite mass Mesabi Mesabi Range meteorite mica schist mile mineral Minn Minnesota Museum N. H. Winchell NEVi sec north shore north side NWVi outcrops pebbles plagioclase porphyry quartz quartz porphyry quartzyte Rainy lake Rept ridge river Saganaga schist schistose seen SEVi shows siliceous sill slate slaty Snowbank lake specimens strike structure survey SWVi usual gabbro vertical VIII XVII XXII XXIV