I posted an article on January 28, 2020 in which I talked about gold discovered in Dallas (present day Marble Hill) Bollinger County, Missouri in 1866. Recently I discovered that gold has been found elsewhere in Southeast Missouri in 1862. The February 4, 1862 issue of The Daily Missouri Democrat contains information about the discovery of gold in neighboring Madison County, Missouri.
I don’t know if the evidence of gold in the area ever resulted in any additional prospecting but I am confident that further research of the archives of the time will result in more information of the subject.
Below is the (very lengthy) article.Gold discovered in Madison County, Missouri Tue, Feb 4, 1862 – 1 · The Daily Missouri Democrat (St. Louis, Missouri) · Newspapers.com Gold discovered in Madison County, Missouri: Part 2 Tue, Feb 4, 1862 – 1 · The Daily Missouri Democrat (St. Louis, Missouri) · Newspapers.com