| Reference | {Deposit:: BURCHARD, E.F., AND BUTTS, CHARLES, 1910, IRON ORES, FUELS AND FLUXES OF THE BIRMINGHAM DISTRICT, ALABAMA: U.S. GEOLOGICAL SURVEY BULL. 400, P58-59.}{Deposit:: CRANE, W.R., 1926, RED IRON ORE AND FERRUGINOUS SANDSTONES OF THE CLINTON FORMATION IN THE BIRMINGHAM DISTRICT OF ALABAMA: U.S. BUREAU OF MINES TECH. PAPER 377, 28 P.} |