Geologic Map Mesabi Iron Range, Minnesota, second edition

Historic strip-map of a 100 mile-long, 10 mile-wide area covering portions of St. Louis and Itasca counties, and enclosing the Mesabi Iron Range and parts of the Duluth Complex. The elongate map area is divided into 3 segments, and portrays the general distribution of major bedrock geologic units. These include undifferentiated Archean footwall to Paleoproterozoic Pokegama Quartzite, Biwabik Iron Formation, and Virginia Formation; portions of the Mesoproterozoic Duluth Complex; and major faults. It also depicts—by name and outline—the natural ore (hematite) and taconite (magnetite) mines in iron-formation, and major Cu-Ni and Fe-Ti deposits in the basal Duluth Complex. Some mining infrastructure (plants, crushers, shafts) present at the time of publication is shown. Map scale is 1 inch=1 mile. The PDF has a 400 dpi resolution suitable for printing.Historic strip-map of a 100 mile-long, 10 mile-wide area covering portions of St. Louis and Itasca counties, and enclosing the Mesabi Iron Range and parts of the Duluth Complex. Scale 1: 62500. First compiled and released in 1993, this map has never been formally published with a cite-able reference. Data and assistance for the compilation was provided by numerous companies, individuals and organizations which are listed on the map plate. The map has been in the charge of the Mesabi Range Geological Society and they have provided the MGS permission to host a scanned version of this map under the MGS holdings on the University of Minnesota Digital Conservancy (2019). The original map of 1993 has been superseded by the 1999 edition to correct certain errors in the cartographic base. The geology portion of the map was not altered