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  3. Mineral Resource Data System (MRDS)

Grass Valley - Boreham Gold Mng. Co.

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

Geologic information

Identification information

Deposit ID 10034985
MRDS ID M022096
Record type Site
Current site name Grass Valley - Boreham Gold Mng. Co.

Geographic coordinates

Geographic coordinates: -121.02547, 39.24017 (WGS84)
Relative position S SLOPE TOWN TALK RIDGE 2 MI S NEVADA CITY

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 24 California

Comments on the location information

  • UTM EST N 1/2 NE 1/4

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite

Nearby scientific data

(1) -121.02547, 39.24017
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Faults, One Striking N 65 W, Dipping 58 Ne, Cuts Vein. Dike In Northern Part Of Mine Carries Stringers Of Qtz.

Ore body information

  • General form STRINGERS, SHOOTS
    Thickness 2.44M
    Depth to top 0M

Economic information about the deposit and operations

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

Comments on the production information

  • CLAIMED FAULT AT SHAFT YIELDED $2000 IN HIGH GRADE ORE.

Workings at the site

  • Type of workings Underground
    Length 340M
    Overall depth 41.15M

Comments on the workings information

  • INCLINED SHAFT, DRIFTS, RAISE, ADIT

Reference information

Bibliographic references

  • Deposit

    LOGAN, C. A., 1930 , SACRAMENTO FIELD DIVISION: REPORT XXVI OF THE STATE MINERALOGIST; CALIFORNIA DIVISION OF MINES VOL. 26 , NO. 2 , P. 113

  • Production

    LOGAN ( 1930 )

General comments

Subject category Comment text
Deposit VEIN, 2 1/2 - 8 FT THICK
Deposit PATENTED LOCATION TAKEN FROM GRASS VALLEY TOPO. MAP, CA ( 1949 ) ; 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

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.