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Union Hill Qtz

Past Producer in Nevada county in California, United States with commodities Gold, Lead, Zinc, Tungsten
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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. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10007408
MRDS ID C011235
Record type Site
Current site name Union Hill Qtz

Geographic coordinates

Geographic coordinates: -121.0227, 39.21239 (WGS84)
Elevation 853
Relative position 1.5 MI. E GRASS VALLEY

Site location context

Political divisions (FIPS codes)

Nevada(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Grass Valley(quadrangle 1:24,000 scale)

Yuba City(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Bear(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Nevada

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 016N 008E 36,25 California

Commodities

Commodity Importance
Gold Primary
Lead Secondary
Zinc Critical Secondary
Tungsten Critical Secondary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Nearby scientific data

(1) -121.0227, 39.21239
ListMap

Economic information

Ore body information

  • General form STRINGERS, SEAMS
    Strike NW
    Dip SE
    Depth to top 0M

Comments on the geologic information

  • SCHEELITE STRINGER, 2 - 7 FT. THICK IN GREEK - TUNGSTEN VEIN SCHIST IS DESCRIBED AS PORPHYRITIC & BRECCIATED

Economic information about the deposit and operations

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

Mining district

District name Grass Valley

Comments on the production information

  • ORE FROM CAMBRIDGE - LUCKY VEIN AVG. $20/TON UNION HILL VEINS CREDITED W/PRODUCTION EST. $500000 - $750000

Workings at the site

  • Type of workings Underground
    Length 3048M
    Overall depth 182.88M

Comments on the workings information

  • SHAFTS, CROSSCUT, DRIFTING, STOPED

Reference information

Bibliographic references

  • Deposit

    MACBOYLE, E., 1918 , MINES AND MINERAL RESOURCES OF NEVADA COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 16 , P. 254 - 255 .

  • Deposit

    JOHNSTON, W. D., 1940 , THE GOLD QUARTZ VEINS OF GRASS VALLEY, CALIFORNIA: US GEOLOGICAL SURVEY PROFESSIONAL PAPER 194 , P. 97 - 98 .

  • Production

    MACBOYLE ( 1918 ) JOHNSON ( 1941 )

General comments

Subject category Comment text
Deposit 3 VEINS W/2 % SULFIDES
Deposit PATENTED 23.11 ACRES INCLUDES UNION HILL, CAMBRIDGE - LUCKY AND CREEK - TUNGSTEN VEINS ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1979 Bowman, J. And Albers, J. U.S. Geological Survey PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD
Editor 27-APR-1995 Mosier, Dan 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 California resources

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