Thorite from
USA | |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. Ref: Montana Bureau of Mines and Gology Special Publication 75, 1977 |
| Gobla, Michael J. (2012) Montana Mineral Locality Index. Rocks & Minerals, 87 (3) 208-240 doi:10.1080/00357529.2012.676825 |
Gobla, Michael J. (2012) Montana Mineral Locality Index. Rocks & Minerals, 87 (3) 208-240 doi:10.1080/00357529.2012.676825 |
Little Brown Egg thorium occurrence, Broadwater County, Montana, USA