Frank Sinatra | Frank Zappa | Frank Lloyd Wright | Frank Capra | Frank Gehry | L. Frank Baum | Abercrombie & Fitch | Frank Stella | Frank | Frank Herbert | Frank Wedekind | Anne Frank | Frank Loesser | Frank Langella | Frank Whittle | Frank Keating | Frank Lautenberg | Frank McCourt | Frank Vincent | Frank Evershed | Frank Bruno | Frank Thomas | Frank Rich | Frank Ocean | Frank Morgan | Frank Lampard | Frank Gifford | Barney Frank | Waldo Frank | Frank Urso |
It was first described in 1945 for an occurrence in the Mahnomen mine, Cuyuna Range, Crow Wing County, Minnesota and named for petrologist Frank Fitch Grout (1880–1958), of the University of Minnesota.