@misc{indiciae3b7e9ad30c69, title = {Uraniferous opal, Virgin Valley, Nevada: Conditions of formation and implications for uranium exploration}, author = {R. A. Zielinski}, year = {1982}, doi = {10.1016/0375-6742(82)90010-3}, url = {https://pubs.usgs.gov/publication/70011708}, note = {Source identifier: 70011708} }