Index

The Index is a lead mine located in Elko county, Nevada at an elevation of 9,226 feet.

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.

Site Name

Primary: Index
Secondary: Black Forest

Commodity

Primary: Lead
Secondary: Silver
Secondary: Gold
Secondary: Copper

Location

State: Nevada
County: Elko
District: Spruce Mountain

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Index Mining Co.
Years: 1916 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Form: TABULAR

Structure

Not available

Alterations

Not available

Rocks

Name: Granite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Permian

Name: Granite
Role: Associated
Age Type: Host Rock
Age Young: Late Permian

Analytical Data

Not available

Materials

Gangue: Hematite
Gangue: Limonite

Comments

Comment (Location): UPPER JOHNSON GULCH

Comment (Production): SMALL PRODUCTION INCLUDED SOME COPPER

Comment (Development): FEE, PATENTED CLAIM; INACTIVE IN 1916

Comment (Deposit): SHEAR ZONE

Comment (Workings): TUNNELS

Comment (Deposit): THE INDEX TUNNELS ARE NEAR THE INDEX FAULT ZONE, A BRECCIA 100 FT WIDE X 800 FT LONG, NEAR UPPER END OF JOHNSON GULCH. THE PROPERTY WAS INACTIVE IN 1937 AND WAS CONTROLLED BY THE INDEX MINING CO. MINERAL SURVEY 4680 ; INFO.SRC : 1 PUB LIT

References

Reference (Deposit): WILSON, CLARK L., (1937), THE GEOLOGY OF THE BLACK FOREST MINE AREA, SPRUCE MOUNTAIN, NEVADA, THESIS M.S.U. OF ARIZONA?

Reference (Deposit): SMITH, ROSCOE M., MINERAL RESOURCES OF ELKO COUNTY, NEVADA, USGS OPEN FILE REPORT, 1976-56

Reference (Production): WILSON, C.L., (1937)

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.