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  3. Mineral Resource Data System (MRDS)

Belvoir Bowlder Ext. Mine

Occurrence in Placer 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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mining district
  10. Ownership information
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10032060
MRDS ID M012204
Record type Site
Current site name Belvoir Bowlder Ext. Mine

Geographic coordinates

Geographic coordinates: -121.12325, 38.88961 (WGS84)
Elevation 305
Relative position N1/2 NE1/4 (PL. 17, USGS 14TH ANN. REPT). ABOUT 800 FT. WEST OF THE ECLIPSE.

Site location context

Political divisions (FIPS codes)

Placer(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Auburn(quadrangle 1:24,000 scale)

Sacramento(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Placer

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 012N 008E 18 California

Commodities

Commodity Importance
Gold Primary

Nearby scientific data

(1) -121.12325, 38.88961
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: VEIN WITH A WEST-SOUTHWEST DIRECTION AND SOUTHERLY DIP RANGING FROM 30 DEG. TO 60 DEG. IT CAN BE TRACED ONLY ABOUT 600 FT. FROM THE CONTACT LINE WHERE IT APPARENTLY SPLITS UP INTO SEVERAL MINOR VEINS. COUNTRY ROCK IS GRANODIORITE. VEIN CARRIES FREE GOLD AND PYRITE.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Mining district

District name Ophir

Ownership information

  • Type Owner
    Owner J. Kaiser
    First year 1935

Comments on the workings information

  • SHAFT, 180 FT. DEEP; 800-FT. TUNNEL.

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOL. V. 32, NO. 1, 1936, P. 42

  • Deposit

    USGS 14TH ANNUAL REPORT PT. 2, P. 267, PL. 17; 12TH REPT. STATE MINERALOGIST, P. 205; 15TH REPORT ST. MINERALOGIST, PL. FACING P. 318, P. 332

General comments

Subject category Comment text
Deposit HAS BEEN WORKED TO SOME EXTENT IN ITS NORTHERLY PART. A MILL ERECTED IN 1893 AND A LARGE BODY OF LOW-GRADE ORE WAS DEVELOPED. RICH BUNCHES WITH MUCH TETRAHEDRITE OCCASIONALLY OCCUR.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. 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.