Description
Santa Fe Pacific (1990s).
Commodities
PrimaryGold
SecondarySilver
Commodity typeM
Deposit
Deposit typeepithermal gold deposit
Model273: Low-sulfide Au-quartz vein
Deposit sizeS
Orebody formtabular to iregular
Ore controlGold is localized along fault surfaces and intersections. Most of the gold is found along the footwall, where open-space-filling occurred during gold deposition; gold was concentrated in areas where solutions pooled. The presence of some microbreccia and pebble-breccia fragments suggest that the fault was reactivated post-mineralization. Mineralization appears to follow bedding plane faults and fractures that crosscut bedding.
Materials
Ore mineralsGold, Electrum, Petzite
GangueQuartz, Adularia
Geology
Host rockTuff,Mixed Clastic/Volcanic Rock
StructureBedding plane faults and fractures that crosscut bedding,
AlterationSilicification
Economic & production
Development statusProducer
Production yearsearly 1900s to the 1940s
First production1925
Last production1940
Discovery year1900
Identification
Deposit ID10310414
MRDS IDD011054
RegionNA
Data scoreB
Coordinates41.02978, -117.94074
References
NBMG Map 91, 2nd, 3rd; Santa Fe Company Co. Report 1998? in GSN SP31, 1999D.A. Davis and J. V. Tingley, 1999, Gold and silver resources in Nevada, NBMG Map 120Bowell, R.J., Hunerlach, M.P., Parshley, J., and Sears, S., 2000, The Ten Mile mining district, Winnemucca, Nevada: Geology, mineralogy and supergene gold enrichment, in Cluer, J.K., Price, J.G., Struhsacker, E.M., Hardyman, R.F., and Morris, C.L., eds., Geology and ore Deposits 2000: The Great Basin and Beyond: Geological Society of Nevada Symposium Proceedings, Reno/Sparks, May 2000, p. 349-363.Willden, R., 1964, Geology and mineral deposits of Humboldt County, Nevada: Nevada Bureau of Mines and Geology Bulletin 59, 154 p.