Pyrrhotite from Gunnison County, Colorado, USA
USA | |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
| Dowsett, F. R., Jr., M. W. Ganster, D. E. Ranta, D. J. Baker, and H. J. Stein, (1981) Geology of the Mount Emmons molybdenum deposit, Crested Butte, Colorado. in 32nd Field Conference New Mexico Geological Society, pp. 325-332. |
(2005) Mineral Resources Data System (MRDS), US Geological Survey. | |
Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. | |
| P. A. Drobeck, (1981) Proterozoic syngenetic massive sulfide deposits in the Gunnison gold belt, Colorado. in 32nd Field Conference New Mexico Geological Society, pp. 279-286. |