Muscovite from selected localities.
USA | |
| [var: Sericite] U.S. Geological Survey,2005, Mineral Resources Data System: U.S Geological Survey,Reston, Virginia |
| [var: Sericite] Carpenter III, P. Albert (1976) Metallic Mineral Deposits of the Carolina Slate Belt, North Carolina : NCGS Bulletion 84 |