Plagioclase 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 | |
Scott D. Giorgis, Russell W. Mapes , and Bredan R. Bream (2002) The Walker Top Granite - Acadian granitoid or eastern Inner Piedmont basement ? : Carolina Geological Society Annual Field Trip October 19-20, 2002 |