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Union Hill Mines

Past Producer in Eureka county in Nevada, United States with commodities Silver, Lead, Copper, Gold
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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. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10044749
MRDS ID M232329
Record type Site
Current site name Union Hill Mines
Alternate or previous names Bell Mine

Geographic coordinates

Geographic coordinates: -116.02285, 40.16659 (WGS84)

Site location context

Political divisions (FIPS codes)

Eureka(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mineral Hill(quadrangle 1:24,000 scale)

Crescent Valley(quadrangle 1:100,000 scale)

Winnemucca(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Diamond-Monitor Valleys(hydrologic unit)

Central Nevada Desert Basins(hydrologic accounting unit)

Central Nevada Desert Basins(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Nevada Eureka

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 026N 053E 05 Nevada

Commodities

Commodity Importance
Silver Primary
Lead Primary
Copper Tertiary
Gold Tertiary

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Nevada Formation
    Rock description Nevada Formation
    Stratigraphic age (youngest) Late Devonian
    Stratigraphic age (youngest) Late Devonian

Nearby scientific data

(1) -116.02285, 40.16659
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Roberts Mountain Thrust
Type of structure Local
Structure description North And East Trending Fracture Zones

Ore body information

  • General form IRREGULAR

Controls for ore emplacement

  • Intersection Of Fracture Zones Of Limestone Horizon

Comments on the geologic information

  • THE AREA IS UNDER LAIN BY CHERT AND SHALE OF THE OVERTHRUST. VININI FORMATION. THE ORE DEPOSITS OCCUR IN THE LOWER PLATE DEVONIAN LIMESTONE IN AND NEAR NORTH AND EAST TRENDING FRACTURE ZONES, AS IRREGULAR REPLACEMENT BODIES (ROBERTS, P. 111)

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1887
Year of first production 1887

Mining district

District name Union District

Land status

Ownership category Private

Comments on the production information

  • A LITTLE OVER $200,000. WORTH, ESTIMATED, TOTAL SINCE 1887

Workings at the site

  • Type of workings Underground
    Length 1219.2M

Comments on the workings information

  • 4 SHAFTS & OTHER WORKINGS

Comments on development

  • WORKED INTERMITTENTLY SINCE 1887. VIRTUALLY ALL ORE SHIPPED WAS FROM THE OXIDIZED ZONE

Reference information

Bibliographic references

  • Deposit

    ROBERTS, R.J., ET AL (1967) GEOLOGY AND MINERAL RESOURCES OF EUREKA CO., NEV. BUR. OF MINES BULL. 64

  • Deposit

    USBM (WINNEMUCCA) MILS NO. 32, REFERENCE NO. 3201100014

  • Deposit

    VANDERBURG W.O. (1938) RECONNAISSANCE OF MINING DISTRICTS IS EUREKA CO., USBM I.C. 7022

  • Production

    ROBERTS, R.J. ET AL., (1967)

General comments

Subject category Comment text
Deposit REPLACEMENT BODIES AT INTERSECTIONS OF FRACTURE ZONES WITH LIMESTONE HORIZONS.
Deposit THE PROPERTY IS DEVELOPED BY 4 SHAFTS (THE RYEGRASS, BELL AND NORTHSTAR) AND 4,000 FEET OF OTHER WORKINGS. WORKED INTERMITTENTLY SINCE 1887, TOTAL PRODUCTION HAS PROBABLY BEEN A LITTLE MORE THAN $200,000. VIRTUALLY ALL THE ORE SHIPPED WAS FROM THE ZONE OF OXIDATION AND AVERAGED 25% PB, 12 OZ/R AG. (VANDERBURG P.65) ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1980 Kirkham, Richard A. Nevada Bureau of Mines and Geology

Beyond USGS

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

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.