Titanite from Butte Mining District (Summit Valley Mining District), Silver Bow County, Montana, USA
USA | |
| Guidebook for the Butte Field Meeting of the Society Of Economic Geologists, 1973 |
| Weed, W.H. (1912) Geology and ore deposits of the Butte district, Montana. Professional Paper 74. US Geological Survey doi:10.3133/pp74 |
Butte Mining District, Silver Bow County, Montana, USA