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USA | |
| 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. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| 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. |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
- Green Mountain Mining District (Iris Mining District)
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. 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. |