Madison County, Missouri
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Madison County is a county located in the Lead Belt region of the U.S. state of Missouri. As of the 2020 census, the population was 12,626. Its county seat and largest city is Fredericktown. The county was officially organized on December 14, 1818, and was named after President James Madison.
Madison County Courthouse in Fredericktown
Southeast Missouri Lead District
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The Southeast Missouri Lead District, commonly called the Lead Belt, is a lead mining district in the southeastern part of Missouri. Counties in the Lead Belt include Saint Francois, Crawford, Dent, Iron, Madison, Reynolds, and Washington. This mining district is the most important and critical lead producer in the United States.
Historical marker commemorating the first mine at Mine La Motte "about 1700".
Missouri Mines State Historic Site occupies a retired lead mill in the "old lead belt"
Cubic galena (lead ore) from the Sweetwater Mine of the Viburnum Trend (Reynolds County, Missouri).
Sphalerite, galena, and marcasite from the Viburnum Trend District (Reynolds County, Missouri).