K Feldspar from Walkerville, Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, USA
USA | |
| [var. Adularia] Tiffany Ostenburg (2022) Mineralogy and Fluid Inclusion Study of the Marget Ann Mine of the Butte Mining District, Silver Bow County, Montana. Masters thesis, Montana Tech. 94pp Gammons, C. H., Szarkowski, J., & Stevenson, R. (2016) New investigations of the mineralogy of silver in the world-class porphyry-lode deposits of Butte, MT. Mining engineering Magazine website |