MAPS SHOWING METALLIC MINERAL DISTRICTS AND
2012-1-18 · A.L., eds., Metallogeny of gold in the Black Hills, South Dakota: Society of Economic Geology Guide book Series, v. 7, p. 20-30. Wilson, A.B., and DeWitt, Ed; 1990, Database for metallic mineral districts and mines of the northern Black Hills, South Dakota and Wyoming: U.S. Geological Survey Open-File Report 90-0424-A (Program Documenta