Bonanza Mine

The Bonanza Mine is a copper mine located in Elko county, Nevada at an elevation of 7,300 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: Bonanza Mine
Secondary: Dolly B.

Commodity

Primary: Copper
Secondary: Gold
Secondary: Silver
Tertiary: Molybdenum

Location

State: Nevada
County: Elko
District: Contact (48)

Land Status

Not available

Holdings

Not available

Workings

Type: Underground

Ownership

Owner Name: S. J. Sneider
Years: 1912 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1896
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Columbia Plateau
Physiographic Section: Snake River Plain

Mineral Deposit Model

Model Name: Skarn Cu

Orebody

Form: TABULAR

Structure

Type: L
Description: Granodiorite Stock With Assoc. Faults & Fractures

Alterations

Alteration Type: L
Alteration Text: Oxidation

Rocks

Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Jurassic

Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Pennsylvanian

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Late Jurassic

Analytical Data

Analytical Data: LOAD AVG. 7% CU

Materials

Ore: Chalcopyrite
Gangue: Garnet
Gangue: Calcite

Comments

Comment (Location): MOST WESTERLY OF MINES IN THE NORTH CONTACT AREA

Comment (Development): PATENTED CLAIMS; MINE IDLE SINCE 1910; 14 CLAIMS

Comment (Deposit): LODE AVERAGING 4% CU

Comment (Geology): ALASKITE DIKE IS ALSO MINERALIZED WHERE IT CUTS THE MINERALIZED LIMESTONE

Comment (Deposit): THIS MINE HAS BEEN IDLE SINCE 1910. SMALL WORKINGS DEVELOP ORE THROUGH A VERTICAL RANGE OF 350 FEET IN THE SIDES OF A CANYON (SCHRADER, 1935, P 35). MINE WAS LOCATED IN 1896 BY MESSRS. COLEMAN, MOORE, AND THOMPSON UNDER THE NAME DOLLY B. THE PROPERTY COMPRISES A GROUP OF 14 CLAIMS. THE PRINCIPAL MINE OPENINGS ARE NEAR THE APEX OF THE ORE IN THE BOTTOM OF THE CANYON NEAR CAMP. ONE TUNNEL IS DRIVEN TO THE NE AND ONE TO THE NW. BOTH ARE SLIGHLLY OVER 200 FT. IN LENGTH, AND ARE IN META-LIMESTONE. THE NW TUNNEL HAS ENCOUNTERED A BODY OF SALFIDE ORE DIPPING 20 N. THERE SEENS TO BE TWO SEPARATC LODES IN THE MINE THE UPPER EAST TUNNEL IS DRIVEN IN LIMESTONE DIPPING 30-40 WEST. AT THE PORTAL, THIS TUNNEL SHOWS THE 20-FOOT MINERALIZED LODE, WHICH AVERAGES ABOUT 4% CU (SCHRADER, 1912 P 103, 126-) FOR GEOLOGIC AND ECONOMIC DESCRIPTIONS OF THE PROPERTY ENCOMPASSED BY DAIMS #2 AND #4, ALSO LOCATED IN THE CONTACT ZONE, SEE SCHRADER, 1912, P 128). MINERAL SURVEY NO 4267, 3904

Comment (Production): $5000 TO $100,000 TOTAL PRODUCTION

Comment (Workings): SMALL WORKINGS, TUNNELS OVER 200 FT LONG

References

Reference (Deposit): SCHRADER, F.C. (1912) A RECONN. OF THE JARBIDGE, CONTACT, AND ELK MT. MINING DISTRICTS, ELKO CO., NEVADA: USGS BUL 497.

Reference (Production): SMITH, R.M., (1976)

Reference (Deposit): SCHRADER, F.C. (1935) THE CONTACT MINING DISTRICT, NEVADA: USGS BULL. 847-A.

Reference (Deposit): HOPE, R.A. & COATS, R.R. (1976) PRELIM. GEOLOGIC MAP OF ELKO CO., NEV: USGS OFR 76-779

Reference (Deposit): SMITH, R.M. (1976) MINERAL RESOURCES OF ELKO CO., NEV; USGS OFR 76-56, P 39-45

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.