|
USA | |
| Wallace R.Griffitts and Jerry C.Olson (1953) Mica Deposits of the Southeastern Piedmont :USGS Paper 248-D |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Wallace R.Griffitts anf 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 |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Espenshade,Gilbert H. and Potter, Donald B. (1960) Kyanite,Sillimanite and Andalusite Deposits of the Southeastern Ststes: Geological Survey Professional Paper 336 |