From Black Rock Desert Nevada wiki
The area contains opals and was prospected for uranium.
In 1950, Jack and Toni Crane owned opal claims in the area.
- M. H. Staatz and H. L. Bauer, Jr., "Virgin Valley Opal District, Humboldt County, Nevada," Geological Survey Circular 142, 1951, Dept. of the Interior.
- Search for Opals in Northern Nevada's Virgin Valley, 09-Jul-2012, TravelNevada.com