Reference | {Deposit:: EDMUNDSON, R.S., 1938, BARITE DEPOSITS OF VIRGINIA: VIRGINIA GEOLOGICAL SURVEY BULLETIN 53, 85P.}{Deposit:: RANKIN, ESPENSHADE AND NEWMAN, 1972, GEOLOGIC MAP OF THE WEST HALF OF THE WINSTON SALEM QUADRANGLE, NORTH CAROLINA, VIRGINIA, AND TENNESSEE, USGS MISCELLANEOUS INVESTIGATIONS MAP I-709-A.}{Deposit:: 1930 DIREXPL O.C. OSBORNE - DUG 2 TEST PITS} |