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Bonanza Mine

Past Producer in Elko county in Nevada, United States with commodities Copper, Gold, Silver, Molybdenum
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Ownership information
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10045988
MRDS ID M233891
Record type Site
Current site name Bonanza Mine
Alternate or previous names Dolly B.

Geographic coordinates

Geographic coordinates: -114.85062, 41.7774 (WGS84)
Elevation 2225
Relative position 4 MI. WEST OF OLD CONTACT, IN BONONZA CANYON

Site location context

Political divisions (FIPS codes)

Elko(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Contact(quadrangle 1:24,000 scale)

Jackpot(quadrangle 1:100,000 scale)

Wells(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Salmon Falls(hydrologic unit)

Upper Snake(hydrologic accounting unit)

Upper Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Geographic areas

Country State County
United States Nevada Elko

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 045N 063E 21 Nevada

Comments on the location information

  • MOST WESTERLY OF MINES IN THE NORTH CONTACT AREA

Commodities

Commodity Importance
Copper Primary
Gold Secondary
Silver Secondary
Molybdenum Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Calcite Gangue
Garnet Gangue

Alteration

  • (Local) Oxidation

Analytical data

Result LOAD AVG. 7% CU

Mineral occurrence model information

Model code 59
USGS model code 18b
Deposit model name Skarn Cu
Mark3 model number 8

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Pennsylvanian
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -114.85062, 41.7774
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Granodiorite Stock With Assoc. Faults & Fractures

Ore body information

  • General form TABULAR
    Width 6.1M

Controls for ore emplacement

  • Granodiorite Contact, Dikes, Faults

Comments on the geologic information

  • ALASKITE DIKE IS ALSO MINERALIZED WHERE IT CUTS THE MINERALIZED LIMESTONE

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1896
Discoverer Messrs. Coleman, Moore, And Thompson

Mining district

District name Contact (48)

Ownership information

  • Type Owner
    Owner S. J. Sneider
    First year 1912

Comments on the production information

  • $5000 TO $100,000 TOTAL PRODUCTION

Workings at the site

  • Type of workings Underground
    Length 121.92M
    Overall depth 106.68M

Comments on the workings information

  • SMALL WORKINGS, TUNNELS OVER 200 FT LONG

Comments on development

  • PATENTED CLAIMS; MINE IDLE SINCE 1910; 14 CLAIMS

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

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

  • Deposit

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

  • Deposit

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

  • Production

    SMITH, R.M., (1976)

General comments

Subject category Comment text
Deposit LODE AVERAGING 4% CU
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

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1979 Weimer, Becky S. Nevada Bureau of Mines and Geology

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Maps centered on this site

Authoritative Nevada resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.