Realgar from Bethel Census Area, Alaska, USA
USA | |
| (2008) Alaska Resource Data File (ARDF) Open-File Report 2008-1225. US Geological Survey |
| (2008) Alaska Resource Data File (ARDF) Open-File Report 2008-1225. US Geological Survey |
| Novagold Resources Inc. |
| Burton, B.L., and Ball, L.B. (2011): USGS Open-File Report 11-1035 |