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  3. Mineral Resource Data System (MRDS)

Empire West

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

Geologic information

Identification information

Deposit ID 10007273
MRDS ID C010970
Record type Site
Current site name Empire West

Geographic coordinates

Geographic coordinates: -121.06436, 39.19211 (WGS84)
Elevation 701
Relative position 3/4 MI. S 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 015N 008E 02,03 California

Comments on the location information

  • UTM EST. - NE 1/4 3 NW 1/4 2

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Lead Secondary

Materials information

Materials Type of material
Galena Ore
Gold Ore
Pyrite Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase

Nearby scientific data

(1) -121.06436, 39.19211
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description To Nw, Vein In Fracture Zone

Ore body information

  • General form MASSIVE, RIBBON & SHEARED
    Strike N
    Dip W
    Depth to top 0M

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

  • PRODUCTION 1857 - 1867 FROM LONE JACK, 1879 - 1906 FROM OMAHA. 1890 - 1899 FROM OMAHA CONS., 1892 - 1900 FROM MENLO. 1857 - 1917 TOTAL PRODUCTION TO DATE OF REFERENCE. CON. AVG. $350 - $460 . AVG. VALUE OF ORE FROM STOPES ON UPPER LEVELS $20 - $30/TON.

Workings at the site

  • Type of workings Underground
    Length 10363.2M
    Overall depth 487.68M

Comments on the workings information

  • SHAFTS, EXTENSIVE DRIFTING, STOPES

Reference information

Bibliographic references

  • Deposit

    MACBOYLE, E., 1918 , MINES AND MINERAL RESOURCES OF NEVADA COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 16 , P. 162 - 163 .

  • Deposit

    JOHNSTON, W. D., 1940 , THE GOLD QUARTZ VEINS OF GRASS VALLEY, CALIFORNIA: US GEOLOGICAL SURVEY PROFESSIONAL PAPER 194 , P. 79 - 82 .

  • Production

    MACBOYLE ( 1918 )

General comments

Subject category Comment text
Deposit 3 VEINS AVG. 1 FT. THICK W/3 - 4 % SULFIDES
Deposit CONS. OF OMAHA, LONE JACK, ILLINOIS, HOMEWARD BOUND & MENLO (WISCONSIN). ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-79 Bowman, J. And Albers, J. U.S. Geological Survey EDITED COMMODITY SIGNIFICANCE FIELDS
Updater 05-DEC-91 Beougher, Dee (Spanski, Gregory T.) U.S. Geological Survey PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD
Editor 27-APR-95 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.