Sylvanite from Gunnison County, Colorado, USA
USA | |
| Dana 7:I:199. |
(2005) Mineral Resources Data System (MRDS), US Geological Survey. | |
| Dana 7:I:199,594 & II:508. |
USA | |
| Dana 7:I:199. |
(2005) Mineral Resources Data System (MRDS), US Geological Survey. | |
| Dana 7:I:199,594 & II:508. |