| Reference | {Deposit:: ROBERTS, J.K., 1928, VA. GEOLOGICAL SURVEY BULL. 29, P 133-134.}{Deposit:: EDMUNDSON, R.S., 1938, VA. GEOLOGICAL SURVEY BULL. 53, P. 54.}{Deposit:: LUTTRELL, G.W., 1966,VA. MIN. RES. REPORT 7, P.32-33}{Deposit:: WATSON, T L, 1907, SULPHATES, IN MINERAL RESOURCES OF VIRGINIA: LYNCHBURG, VIRGINIA, P 305-327.}{Deposit:: FURCRON, A.S., 1939, GEOLOGY AND MINERAL RESOURCES OF THE WARRENTON QUADRANGLE, VIRGINIA: VGS BULL. 54, P. 67-68.}{Deposit:: 1845 DIREXPL ? - OPENED MINE, RECOVERED BARITE}{Deposit:: 185? DIREXPL ? - MINED}{Deposit:: 1880 DIREXPL ? - MINED}{Deposit:: 189? DIREXPL ? - MINED}{Deposit:: 1903 DIREXPL ? - MINED}{Production:: LUTTRELL REF.}{Reserve-Resource:: ROBERTS REFERENCE} |