| Reference | {Deposit:: BROWN, W.R., 1962, MICA AND FELDSPAR DEPOSITS OF VIRGINIA: VIRGINIA DIVISION OF MINERAL RESOURCES, MINERAL RESOURCES REPORT 3, 195 P.}{Deposit:: DIETRICH, R.V., 1970, MINERALS OF VIRGINIA: VIRGINIA POLYTECHNIC INSTITUTE, RESEARCH DIVISION BULLETIN 47, 325 P.}{Deposit:: GRIFFITTS, JAHNS, AND LEMKE, 1953, MICA DEPOSITS OF THE SOUTHEASTERN PIEDMONT, PART 4. OUTLYING DEPOSITS IN VIRGINIA, U.S. GEOLOGICAL SURVEY PROF. PAPER 248-C, PP. 171-202.}{Deposit:: PEGAU, A.A., 1932, PEGMATITE DEPOSITS OF VIRGINIA: VIRGINIA GEOLOGICAL SURVEY BULLETIN 33, 123 P.}{Deposit:: DEAR, P.S., MATHEWS, A.L., AND WHITTEMORE, J.W., 1938, AN INVESTIGATION OF SOME VIRGINIA FELDSPARS: VIRGINIA POLYTECHNIC INSTITUTE, ENGINEERING EXPERIMENT STATION SERIES, BULLETIN 35, 48 P.}{Deposit:: 1928 DIREXPL CLINCHFIELD SAND AND FELDSPAR CO.-MINED FELDSPAR}{Deposit:: 1949 DIREXPL CAROLINA MINERAL CO.-MINED FELDSPAR}{Deposit:: 1955 DIREXPL CLINCHFIELD SAND AND FELDSPAR CO.-MINED FELDSPAR}{Production:: DEAR, ETAL, (1938)} |