Muscovite from Delmoe Lake area, Boulder Batholith, Jefferson County, Montana, USA
USA | |
| [var. Sericite] (In preparation) |
Sweeney, Ryan (2018), personal communication with Mindat.org. |
USA | |
| [var. Sericite] (In preparation) |
Sweeney, Ryan (2018), personal communication with Mindat.org. |