1. Geologic map of exposed Precambrian rocks in the Iron Mountain Lake quadrangle, Missouri Yale Public content 1983. 2018-04-25T19:31:50Z. 2018-04-25T19:31:50Z. Nusbaum, Robert L. Missouri Dept. of Natural Resources, Division of Geology and Land Survey?. English. Public. Missouri, Iron Mountain Lake Region, and Iron Mountain Lake Region (Mo.).