| Reference | {Deposit:: DIETRICH, R V, 1959, GEOLOGY AND MINERAL RESOURCES OF FLOYD COUNTY OF THE BLUE RIDGE UPLAND, SOUTHWESTERN VIRGINIA: VIRGINIA POLYTECHNIC INSTITUTE BULLETIN, ENGINEERING EXPERIMENT STATION SERIES NO 134, 160 P.}{Deposit:: ESPENSHADE, G H, 1963, GEOLOGY OF SOME COPPER DEPOSITS IN NORTH CAROLINA, VIRGINIA, AND ALABAMA: U S GEOLOGICAL SURVEY BULLETIN 1142-I, 50 P.}{Deposit:: SWEET, P C AND BELL, S C, 1980, METALLIC MINERALIZATION IN THE BLUE RIDGE PROVINCE OF VIRGINIA: VIRGINIA DIVISION OF MINERAL RESOURCES, IN PREPARATION.}{Deposit:: GROSH, W.A., 1948, INVESTIGATION OF THE TONCRAE-HOWARD COPPER DEPOSITS, FLOYD COUNTY, VA: U.S. BUREAU OF MINES REPORT OF INVESTIGATION 4362, 4 P.}{Deposit:: 1800? DIREXPL MINING OF GOSSAN FOR IRON UNTIL ABOUT 1850, FOLLOWED BY MINING OF SMUT ORE FOR CU, 1854-1855.}{Deposit:: 1905 DIREXPL NEW YORK AND VIRGINIA COPPER CO.: DEVELOPMENT OF PRIMARY SULFIDES UNTIL 1908.}{Deposit:: 1938 DIREXPL AMERICAN METALS CO: DRILLING AND SELECTIVE MINING UNTIL 1941.}{Production:: ESPENSHADE (1963), SWEET AND BELL (1979)}{Reserve-Resource:: UNPUBLISHED REPORT BY R.J. WRIGHT, 1943, USGS} |