Tungstite from San Juan Mountains, USA
USA | |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
| Luetcke, Rolf (n.d.) Personal communication. |
USA | |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
| Luetcke, Rolf (n.d.) Personal communication. |
Adams Mine, Cement Creek, Eureka Mining District, San Juan County, Colorado, USA