Frank Fitch Grout (January 24, 1880, Rockford, Illinois – August 1, 1958, Minneapolis) was an American petrographer, geologist, and mineralogist.
[2] The mineral groutite is named in Grout's honor (based upon a 1945 discovery by John Walter Gruner).
Grout was extremely productive during these summers and completed, with his junior colleagues, many valuable reports.
Grout enjoyed this summer fieldwork in the lake country of Minnesota and adjacent area in Ontario.
In the lake country, he and his colleagues travelled by canoe and portage and camped in rarely visited areas.
[11][12] Grout was primarily a petrologist and petrographer, but he also did research on "clays, coal, iron formation and ores, mineralogy, chemical analysis of rocks and Precambrian stratigraphy.