| Lat / long: | 38.24494, -117.08313 |
| Primary: | Gold, Silver |
| Ore: | Gold |
| Gangue: | Calcite, Quartz, Chalcedony |
| Orebody form: | disseminated |
| Discovery year: | 1986 |
| Operation type: | Surface-Underground |
| Deposit type: | Hot-spring Au-Ag |
| Production size: | None |
| Development status: | Producer |
| Host rock: | Tombstone Formation, Palmetto Formation, Red Mountain |
| Host type: | Rhyolite,Tuff,Mixed Clastic/Volcanic Rock,Argillite,Trachyandesite |
| Structure: | Minor east-northeast trending faults with minimal displacements are mapped in the area., Midway lies east of the Walker Lane, a prominent zone of parallel and sub-parallel right lateral strike slip faults,a major structure that separates the Sierra Nevada batholith from the Basin and Range Province; regional extensional Basin and Range type faulting |
| Alteration processes: | Rhyolite host rock is altered, silicified. Northwest-trending, sub-vertical rhyolite porphyry dikes that intrude the Palmetto Formation and overlying Rye Patch Formation at Midway are pervasively propylitized with local sericitic and phyllic hydrothermal alteration . Small amounts of pyrite and chalcopyrite occur in the dike rock. |
| MRDS | M231771 |
| DEP | 10310416 |
| Reference | {Deposit:: Kleinhampl, F.J. And Ziony, J.I., 1994, Geology and Mineral Deposits of Northern Nye Co.,NBMG Bulletins 99A & 99B.}{Deposit:: Mining Record 3/12/97}{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.}{Deposit:: NBMG MI-2002}{Deposit:: NBMG MI-97}{Deposit:: Amer. Mines (1998), 1997}{Deposit:: International Mining News, 12 Mar 1997}{Deposit:: Bonham and Garfield, 1979, p.31}{Deposit:: Geoffrey Goodall, 2003, Exploration Summary of the Midway Gold Prospect, Nye County, Nevada; Geological Society of Nevada Special Publication No. 37, Spring 2003 Field Trip Guidebook, Gold Deposits of the Goldfield, Midway and Thunder Mountain Areas.}{Deposit:: Seabridge Gold Inc.,}{Deposit:: press releases, 10/24/02, 12/23/02.} |
| Reporter | LaPointe, D.D., Schruben, Paul G. |