Quartz from selected localities.
USA | |
| Wallace R. Griffitts and Jerry C. Olson (1953) Mica Deposits of the Southeastern Piedmont ;USGS Paper 248-D |
Wallace R. Griffitts and Jerry C. Olson (1953) Mica Deposits of the Southeastern Piedmont: USGS Paper 248-D | |
Wallace R. Griffitts and Jerry C. Olson (1953) Mica Deposits of the Southeastern Piedmont:USGS Paper 248-D | |
Wallace R. Griffitts and Jerry C. Olson (1953) Mica Deposits of the Southeastern Piedmont: USGS Paper 248-D | |
U.S Bureau of Mines Sep, 1995 | |
Wallace R. Griffitts and Jerry C. Olson (1953) Mica Deposits of the Southeastern Piedmont:USGS Paper 248-D | |
Wallace R. Griffitts and Jerry C. Olson (1953) Mica Deposits of the Southeastern Piedmont:USGS Paper 248-D | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
Wallace R. Griffitts and Jerry C. Olson (1953) Mica Deposits of the Southeastern Piedmont:USGS Paper 248-D | |
| USGS Bull 1042G |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| Mertie, John Beaver, Jr. (1959) Quartz crystal deposits of southwestern Virginia and western North Carolina. USGS Bulletin: 1072-D |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |