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  3. Mineral Resource Data System (MRDS)

Union Pass Mine

Past Producer in Mohave county in Arizona, United States with commodities Gold, Silver
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  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 10102422
MRDS ID M001662
Record type Site
Current site name Union Pass Mine
Alternate or previous names Mohave Buttes, Thumb Butte
Related records 10258986

Geographic coordinates

Geographic coordinates: -114.43498, 35.17419 (WGS84)
Elevation 719
Relative position 4 MILES SW OF UNION PASS

Site location context

Political divisions (FIPS codes)

Mohave(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Union Pass(quadrangle 1:24,000 scale)

Davis Dam(quadrangle 1:100,000 scale)

Kingman(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Havasu-Mohave Lakes(hydrologic unit)

Lower Colorado(hydrologic accounting unit)

Lower Colorado(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management AZ)

Bureau of Land Management AZ BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Arizona Mohave

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 021N 020W 29 Arizona

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Gold Ore
Hematite Ore
Fluorite Gangue

Analytical data

Result ASSAY AVERAGE ESTIMATE 0.2 OZ AU/TON ( 1909

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Economic information

Geologic structures

Type of structure Regional
Structure description Nw To Nnw Trending Normal Faulting
Type of structure Local
Structure description Tert Flows Strike Nw, Dip 30-40 Ne, And Overlie Prec Granite And Gneiss

Ore body information

  • General form LODE, TABULAR
    Strike N 30 E
    Dip 20 SE
    Length 4023.25M
    Width 30.48M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Union Pass District

Land status

Ownership category BLM Administrative Area

Workings at the site

  • Type of workings Underground
    Length 54.86M
    Overall depth 30.48M

Reference information

Bibliographic references

  • Deposit

    SCHRADER, F. C., 1909 , MINERAL DEPOSITS OF THE CERBAT RANGE, BLACK MOUNTAINS, AND THE GRAND WASH CLIFFS, MOHAVE COUNTY, ARIZONA: U.S.G.S. BULL. 397 , P. 211

General comments

Subject category Comment text
Deposit VEIN FOLLOWS FAULT CONTACT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1972 Gere, W. U.S. Geological Survey
Updater 01-JAN-1979 Johnson, Kris H. (Creasey, S.C.) U.S. Geological Survey

Beyond USGS

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

Maps centered on this site

Authoritative Arizona resources

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