| Reference | {Deposit:: BROWN, W H, 1953, STRUCTURAL FRAMEWORK AND MINERAL RESOURCES OF THE VIRGINIA PIEDMONT, IN MCGRAIN, P (ED), PROCEEDINGS OF THE SOUTHEASTERN MINERAL SYMPOSIUM, 1950: KENTUCKY GEOLOGICAL SURVEY SERIES 9, SPECIAL PUBLICATION 1, P 88-111, VIRGINIA GEOLOGICAL SURVEY REPRINT SERIES 16, 1954.}{Deposit:: GROSH, W.A., 1949, INVESTIGATION OF VALZINCO LEAD ZINC MINE, SPOTSYLVANIA COUNTY, VIRGINIA: U.S. BUREAU OF MINES REPORT OF INVESTIGATIONS 4403, 7 P.}{Deposit:: LUTTRELL, G.W., 1966, BASE- AND PRECIOUS-METAL AND RELATED ORE DEPOSITS OF VIRGINIA: VIRGINIA DIVISION OF MINERAL RESOURCES, MINERAL RESOURCES REPORT 7, 167 P.}{Deposit:: POOLE, J.W., 1974, NOTES ON SOME ABANDONED COPPER, LEAD, AND ZINC MINES IN THE PIEDMONT OF VIRGINIA: VIRGINIA MINERALS, V.20, NO.2, P.10-16.}{Deposit:: MCKNIGHT, 1960, UNPUBLISHED REPORT.}{Deposit:: 1909 DIREXPL BERTHA MINERAL CO: FIRST DEVELOPMENT}1943 DIREXPL U S B M AND PANAMINAS, INC: DRILLED 9 EXPLORATORY HOLS}1955 OTHER NEW JERSEY ZINC CO: CONDUCTED GEOCHEMICAL AND GEOPHYSICAL SURVEYS}{Production:: GROSCH (1949), POOLE (1974)} |