Muscovite from Spruce Mountain Mining District, Elko County, Nevada, USA
USA | |
| [var. Sericite] NBMG Bull 14 |
[var. Sericite] (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
USA | |
| [var. Sericite] NBMG Bull 14 |
[var. Sericite] (2005) Mineral Resources Data System (MRDS), US Geological Survey. |