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USA | |
| [var. Rock Crystal] Pratt, Joseph Hyde (1933) Gems and gem minerals of North Carolina. American Mineralogist, 18 (4) 148-159 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |