| Lat / long: | 40.51658, -116.01063 |
| Primary: | Copper, Gold |
| Secondary: | Silver, Zinc, Lead |
| Tertiary: | Tungsten, Barium-Barite |
| Ore: | Malachite, Chalcanthite, Cerussite, Cerargyrite, Duftite, Azurite, Galena, Bornite, Chalcopyrite, Sphalerite, Chalcocite, Tetrahedrite, Scheelite, Pyromorphite |
| Gangue: | Calcite, Garnet, Tremolite, Quartz, Fluorite, Wollastonite, Halloysite, Pyrite, Barite |
| Orebody form: | tabular to irregular |
| Discovery year: | 1870 |
| Operation type: | Surface-Underground |
| Deposit type: | replacement, veins |
| Production size: | Medium |
| Development status: | Past Producer |
| First production started: | 1870 |
| Last production ended: | 1959 |
| Host rock: | Devils Gate Limestone (copper host rock), Webb Formation siltstone (gold host rock) |
| Host type: | Limestone,Skarn (Tactite),Siltstone |
| Associated rock: | Chainman Shale |
| Associated type: | Quartz Monzonite,Porphyry |
| Structure: | North- to northeast-trending Bunker Hill fault; E-W-trending Bald Mountain fault |
| Alteration processes: | sericitization, silicification |
| MRDS | M233382 |
| DEP | 10310317 |
| Reference | {Deposit:: Ketner, K.B., and Smith, Jr., J.F., Geology of the Railroad Mining District, Elko County, Nevada. USGS Bulletin 1162-B}{Deposit:: Smith, R.M., Mineral Resources of Elko County, Nevada, USGS Open File Report, 1976-56}{Deposit:: Granger, A.E., et al., 1957, Geology and Mineral Resources of Elko County, Nevada, NBMG Bulletin 54}{Deposit:: Emmons, W.H., 1910, A Reconnaissance of some Mining Camps of Elko, Lander, and Eureka Counties, Nevada. USGS Bulletin 408.}{Deposit:: Mines Register, 1937.}{Deposit:: La Pointe and others, 1991, NBMG Bull. 106}{Deposit:: NBMG MI-96; MI-97.}{Deposit:: Long, K.R., DeYoung, J.H., Jr., and Ludington, S.D., 1998, Significant deposits of gold, silver, copper, lead, and zinc in the United States: U.S. Geological Survey Open-File Report 90-206A, 33 p.; 98-206B. one 3.5 inch diskette.}{Deposit:: Royal Standard Minerals website, 2006 http://www.royalstandardminerals.com/} |
| Reporter | LaPointe, D.D., Schruben, Paul G. |