Muscovite from Lechuguilla Cave, Carlsbad Caverns National Park, Eddy County, New Mexico, USA
USA | |
| [var. Illite] Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico (3rd ed.) University of New Mexico Press, Albuquerque, NM. |
USA | |
| [var. Illite] Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico (3rd ed.) University of New Mexico Press, Albuquerque, NM. |