| Reference | {Deposit:: BUTTS, CHARLES, 1911, IRON ORES IN THE MONTEVALLO COLUMBIANA REGION ALABAMA: U.S. GEOL SURVEY BULL 740, P. 215-230.}{Deposit:: BUTTS, CHARLES, 1940, DESCRIPTION OF THE MONTEVALLO AND COLUMBIANA QUADRANGLES (ALABAMA): U.S. GEOLOGICAL SURVEY ATLAS FILIO 226} |