Mellen "Black Granite" - Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1995)
2 p.
Keywords: Quarries and quarrying--Wisconsin; Black granite; Geology; Mineralogy; Anorthosite; Minerals; Mellen (Wis.); Quarries and quarrying