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Geology and zinc-lead deposits in the Durango area, Dubuque County, Iowa

January 1, 1994

Geologic investigations were begun in Iowa to appraise; (1) the possible occurrence of zinc ore in strata that elsewhere in the Upper Mississippi Valley zinc-lead district have been the principal sites of zinc concentration; and (2) lead ore of the type known as "crevice deposits," which were mined so extensively during the 19th century in Dubuque County, Iowa, but have been mined very little since 1910.

Citation Information

Publication Year 1955
Title Geology and zinc-lead deposits in the Durango area, Dubuque County, Iowa
DOI 10.3133/mf33
Authors Arthur E. Flint, C. Erwin Brown
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Miscellaneous Field Studies Map
Series Number 33
Index ID mf33
Record Source USGS Publications Warehouse