Midwest Gem, Fossil, and Mineral Trails, Great Lakes States: Minnesota, Wisconsin, Indiana, Illinois, Michigan, Ohio |
Common terms and phrases
1/2 mile east abundant Alpena bands barite basalt beaches Bluff brachiopods Brown bryzoans calcite celestite cephalopods chert chlorastrolite City clubs coal collectors colors concretions Creek crinoids cutting materials datolite deposits Devonian diamonds dolomite dumps excavations exposed exposures fern field trips Flint Ridge fluorite Forest fossil corals fossil plants fossils fossils are found galena gastropods geodes glacial goethite gold granite gravel pits green gypsum hematite Highway hobbyists iron ranges jasper Keweenaw Lake Michigan Lake Superior agates lapidary lapidary materials Look Marais marcasite marine fossils Marquette Mesabi Midwest miles north miles south miles west mineral and fossil mines Minnesota Monroe museums native copper nodules north shore northeast occur Ohio Ontonagon County Ordovician Ordovician fossils outcrops Park pelecypods Pennsylvanian Petoskey stones pink Pipestone plant fossils prehnite produced pyrite quartz quartz crystals road cuts rock sandstone selenite shale Silurian southeast specimens sphalerite streams thomsonite trilobites upper Michigan ши