Muscovite from Klamath Mountains, Trinity County, California, USA
USA | |
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 275. Clarke, F.W. (1885), Mica: Mineral Resources U.S., 1883-84: 911 |
| [var. Sericite] (2005) Mineral Resources Data System (MRDS), US Geological Survey. |