| Reference | {Deposit:: ESPENSHADE, G.H., 1952, MANGANESE, IRON, AND BARITE DEPOSITS OF THE JAMES RIVER-ROANOKE RIVER DISTRICT, VIRGINIA, U.S. GEOLOGICAL SURVEY MINERAL INVESTIGATION FIELD STUDIES.}{Deposit:: ESPENSHADE, G.H., 1954 GEOLOGY AND MINERAL DEPOSITS OF MAP MF5, THE JAMES RIVER MANGANESE DISTRICT, U.S. GEOLOGICAL SURVEY BULLETIN 1008 (PL. 2; P. 118-119).}{Deposit:: CONLEY, J.F., 1985, GEOLOGY OF THE SOUTHWEST PIEDMONT OF VIRGINIA, VIRGINIA DIVISION OF MINERAL RESOURCES PUBLICATIONS NO. 59, 33P. (GENERAL GEOLOGY).} |