Muscovite from Modoc County, California, USA
USA | |
| [var. Sericite] Ross, C.P. (1941) Some quicksilver prospects in adjacent parts of Nevada, California and Oregon. USGS Bulletin 931-B: 28-30. |
USA | |
| [var. Sericite] Ross, C.P. (1941) Some quicksilver prospects in adjacent parts of Nevada, California and Oregon. USGS Bulletin 931-B: 28-30. |