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 | |
| Michael Dennis |
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. |
Morganton Quarry, Morganton, Burke County, North Carolina, USA