Regional and Local Geologic and Geochemical Controls on Industrial Clay Grades between Granite Falls and Redwood Falls, Minnesota

Abstract

Geologic investigations and industry exploration work prior to this study had focused on the area east of Redwood Falls, MN, where many outcrops of kaolin-bearing materials had been located. This study was initiated to examine the area between Redwood Falls and Granite Falls, MN, in order to determine the potential for large deposits of kaolin-bearing materials. One active kaolin mine and one prospect were located in this area during the study, but most of this area had been largely unexplored.