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Animikie Group  search
BTChronostratigraphic Units
 .Precambrian
 ..Animikie Group
RTOntario
 Wisconsin
 Minnesota
 Biwabik Iron Formation
 Gunflint Iron Formation
 Michigan
 Thomson Formation
 Virginia Formation
SNIncludes Pokegama Quartzite, Biwabik Iron Formation Series, and Virginia Formation, N Michigan, NE Minnesota, Ontario, and N Wisconsin.