|
USA | |
- Clear Creek pegmatite Province
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
- Ralston Buttes Mining District
| (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. USGS Open-File Report 83-417 |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Simmons, William B., Heinrich, E. William (1980) Rare-Earth Pegmatites of the South Platte District, Colorado. Resource Series 11, Colorado Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |