The Alta Shaft is a silver and gold mine located in Storey county, Nevada.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Alta Shaft MRDS details
Site Name
Primary: Alta Shaft
Commodity
Primary: Silver
Primary: Gold
Secondary: Lead
Secondary: Copper
Tertiary: Zinc
Tertiary: Iron
Location
State: Nevada
County: Storey
District: Comstock Lode
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Year First Production: 1879
Discovery Year: 1859
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin
Physiographic Detail: Basin And Mountains
Mineral Deposit Model
Model Name: Epithermal vein, Comstock
Orebody
Form: TABULAR
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Strong Alteration Of Volcanic Host Rocks
Rocks
Name: Andesite
Role: Host
Age Type: Associated Rock Unit
Age Young: Miocene
Name: Andesite
Role: Host
Age Type: Host Rock
Age Young: Miocene
Analytical Data
Not available
Materials
Ore: Pyrite
Ore: Argentite
Ore: Galena
Ore: Polybasite
Ore: Gold
Gangue: Quartz
Comments
Comment (Production): PRODUCTION WAS 24, 242 TONS ORE, 1879-1890 WITH A GROSS VALUE OF $403,564. IT ALSO CONTAINED SOME LEAD.
Comment (Development): DEVELOPED FROM 1874 TO 1898. ORIGINALLY DUG TO TAP THE "BIG BONANZA" ORES
Comment (Deposit): VEIN, WITH SUPERGENE ENRICHMENT ABOVE THE 500-FT. LEVEL.
Comment (Workings): SHAFT, DRIFTS
Comment (Deposit): THIS SHAFT WAS DUG TO TAP THE "BIG BONANZA" LODE AND WAS 2150 FT DEEP. THE ALTA WAS UNDER DEVELOPMENT FROM 1874 TO 1900 WITH LITTLE SUCCESS. THE TOTAL RECORDED PRODUCTION WAS 24,242 TONS WITH A GROSS VALUE OF $403,564. ORIGINALLY STAKED IN 1859. DEVELOPED, 1874-1898. ; INFO.SRC : 2 UNPUB REPT; 2 UNPUB REPT
References
Reference (Deposit): STODDARD, CARL, AND CARPENTER, J.A., 1950, MINERAL RESOURCES OF STOREY AND LYON COUNTIES OF THE COMSTOCK; 1940-41 OPEN FILE REPORT N.B.M.G
Reference (Production): STUDDARD, C. AND CARPENTER, J.A., 1950
Nevada Gold
Nevada has a total of 368 distinct gold districts. Of the of those, just 36 are major producers with production and/or reserves of over 1,000,000 ounces, 49 have production and/or reserves of over 100,000 ounces, with the rest having less than 100,000 ounces. Read more: Gold Districts of Nevada.
