| Lat / long: | 39.18104, -115.67422 |
| Primary: | Gold |
| Secondary: | Silver |
| Tertiary: | Mercury, Thallium, Antimony, Barium-Barite |
| Ore: | Gold |
| Gangue: | Hematite, Limonite, Opal, Barite, Scorodite |
| Discovery year: | 1986 |
| Operation type: | Surface |
| Deposit type: | Sediment-hosted disseminated gold |
| Production size: | Small |
| Development status: | Producer |
| First production started: | 1989 |
| Host rock: | Chainman Shale, Joana Limestone |
| Host type: | Shale,Limestone |
| Structure: | Nighthawk Fault, Rocks in the mine area have been affected by low amplitude, open folds with axes that strike between N-S and N15E. |
| Alteration processes: | Silicification is the most common alteration within the orebody. Jasperization, argillization, and decarbonization have also affected the rocks. Chainman Shale and Pilot Shale are argillized and silicified adjacent to the Nighthawk Fault. |
| DEP | 10310554 |
| Reference | {Deposit:: Carden, J.R., 1991, The Discovery and Geology of the Nighthawk Ridge Deposit at Easy Junior, White Pine County, Nevada, in Geology and Ore Deposits of the Great Basin, Raines, G.L., et al., eds., The Geological Society of Nevada, Reno, p. 665-676.}{Deposit:: NBMG, 1991, The Nevada Mineral Industry 1990, NBMG Special Publication MI-1990, p.25.}{Deposit:: Long, K.R., DeYoung, J.H., Jr., and Ludington, S.D., 1998, Database of significant deposits of gold, silver, copper, lead, and zinc in the United States; Part A, Database description and analysis; part B, Digital database: U.S. Geological Survey Open-File Report 98-206, 33 p., one 3.5 inch diskette.} |
| Reporter | LaPointe, D.D. , Schruben, Paul G. |