Term: catlinite
Definition: soft, red-colored stone mined only in southwestern Minnesota and preferred by native peoples for pipe bowls; named for the artist George Catlin (1796-1872), who was the first white person to visit the quarry from which it was obtained.
[Source: Theler, James L. and Robert F. Boszhardt. Twelve Millennia: Archaeology of the Upper Mississippi River (Iowa City: University of Iowa Press, 2003).]
