|
USA | |
- Unorganized mining district [1]
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Am Min (1936), 21:607-610 |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
- Keystone Gold Mining District
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Koschmann, Albert Herbert, Bergendahl, M.H. (1968) Principal gold-producing districts of the United States. Professional Paper 610. US Geological Survey doi:10.3133/pp610 |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
Lead Mining District, Lawrence County, South Dakota, USA