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  3. Mineral Resource Data System (MRDS)

Union Mine

Past Producer in Washoe county in Nevada, United States with commodities Copper, Gold, Lead, Silver, Zinc
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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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10295837
MAS/MILS ID 0320310067
Record type Site
Current site name Union Mine
Alternate or previous names Union Lead Mine, Union, Commonwealth Mine

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -119.7891, 39.348 (WGS84)
Elevation 1506
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Washoe(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Washoe City(quadrangle 1:24,000 scale)

Carson City(quadrangle 1:100,000 scale)

Reno(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Truckee(hydrologic unit)

Truckee(hydrologic accounting unit)

Central Lahontan(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Nevada Washoe

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 017 N 020 E 07 SWSWSW Nevada

Commodities

Commodity Importance
Copper Tertiary
Gold Tertiary
Lead Primary
Silver Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Arsenopyrite Unknown
Calamine Unknown
Cerussite Unknown
Chalcanthite Unknown
Chalcopyrite Unknown
Galena Unknown
Malachite Unknown
Pyrite Unknown
Smithsonite Unknown
Sphalerite Unknown

Nearby scientific data

Main Entrance (1) -119.7891, 39.348
ListMap

Economic information

Ore body information

  • Strike N40E
    Dip 55S
    Thickness 3M
    Length 57M
    Width 39M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 SHEAR ZONE
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin OXIDATION
    Primary Ore Control FAULTING
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 SERICITIC
    Type of Wallrock Alter. #2 SILICIFICATION
    Strike And Dip N40E:55S
    Minimum Depth to Top 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830316

Comments on the geologic information

  • THE SEDMENTARY ROCKS HAVE BEEN METAMORPHOSED TO HORNFELS FACIES. THE SEQUENCE NOW CONTAINS SLATE AND MARBLE.

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1860
Year of first production 1906

Mining district

District name Comstock Lode

Mineral rights holdings

Type of mineral rights Patented

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Union Lead Mining And Smelter Co.
    Home office Nevada
    Year 1946
  • Type Operator
    Owner Imperial Operating Co.
    Home office California
    Year 1953

Comments on the reserve resource information

  • LEAD IS OF ORE GRADE IN BOTH OXIDIZED AND UNOXIDIZED ZONES, OCCURING AS CARBONATE (CERRUSITE) IN THE OXIDIZED ZONE, AND SULFIDE (GALENA) DEEPER DOWN. THE OXIDIZED ZONE EXTENDS DOWN TO 175 FT. LOCALLY.

Reference information

Bibliographic references

  • Deposit

    GEEHAN, R.W., INVESTIGATION OF THE UNION LEAD-ZINC MINE,

  • Deposit

    WASHOE CO., NEV., 1950, USBU MINES RPT. INVEST. 4623

  • Deposit

    OVERTON, T.D., MINERAL RESOURCES OF DOUGLAS, ORMSBY, AND

  • Deposit

    WASHOE COUNTIES, 1947, NEV. BUMINES BULL. 46

  • Deposit

    BONHAM, H.F., GEOLOGY AND MINERAL DEPOSITS OF WASHOE AND

  • Deposit

    STOREY COUNTIES, 1969, NEV. BUMINES BULL. 70, P. 61-64.

  • Deposit

    JOHNSON, M.G., PLACER GOLD DEPOSITS OF NEVADA, 1973, USGS

  • Deposit

    BULL. 1356, P. 91

  • Deposit

    ENGEL, A.L., SIMPLE TREATMENT METHODS FOR SULFIDE GOLD AND

  • Deposit

    SILVER ORES, 1951, USBUMINES RPT. INVEST. 4790 P. 16-17

  • Deposit

    THOMPSON, G.A., AND WHITE, D.E., REGIONAL GEOLOGY OF THE

  • Deposit

    STEAMBOAT SPRINGS AREA, WASHOE CO., NEV., USGS PROF. PAPER

  • Deposit

    458-A, P. 46-47.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-MAR-93 Ridenour, James U.S. Bureau of Mines

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.