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Mendenhall No. 1 Mine

Past Producer in Alameda county in California, United States with commodity Chromium
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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. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Ownership information
  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 10098573
MRDS ID M100573
Record type Site
Current site name Mendenhall No. 1 Mine
Alternate or previous names Claim: Cedar Mtn.

Geographic coordinates

Geographic coordinates: -121.61297, 37.55741 (WGS84)
Elevation 1061
Relative position APPROXIMATELY 13 MILES SE OF LIVERMORE, CA.

Site location context

Political divisions (FIPS codes)

Alameda(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cedar Mountain(quadrangle 1:24,000 scale)

Stockton(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

San Francisco Bay(hydrologic unit)

San Francisco Bay(hydrologic accounting unit)

San Francisco Bay(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Alameda

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 004S;004S;004S 003E;003E;003E 26;26;26 NE OF NW OF SE California

Comments on the location information

  • WORKINGS NEAR TOP OF KNOLL ON AN E-W TRENDING RIDGE LESS THAN 1/2 MILE FROM CEDAR MOUNTAIN.

Commodities

Commodity Importance
Chromium Critical Primary

Comments on the commodity information

  • CONCENTRATES SHIPPED 1953-1956.

Materials information

Materials Type of material
Chromite Ore

Analytical data

Result CONCENTRATES: 43.3-51.3% CR2O3
Result 11.7-13.8% FE
Result CR/FE 2.5-3.0

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite

Nearby scientific data

(1) -121.61297, 37.55741
ListMap

Economic information

Ore body information

  • General form IRREGULAR

Comments on the geologic information

  • A NEARLY CIRCULAR MASS OF SERPENTINIZED ULTRAMAFIC ROCKS, ABOUT A MILE IN DIAMETER, OCCUR ON CEDAR MOUNTAIN.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1885
Year of first production 1888
Year of last production 1956

Mining district

District name Cedar Mountain Area

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Palo Alto Mining Corp., Campbell, Ca.
    First year 1956
  • Type Owner
    Owner Vernon And Dorthy Rose, 1230 Marguerite St., Livermore, Ca. 94550 (415) 447-3431
    First year 1975

Workings at the site

  • Type of workings Surface
    Overall length 91.44M
    Overall width 30.48M

Comments on the workings information

  • WORKINGS CONSISTED OF SEVERAL LARGE OPEN CUTS AND TRENCHES.

Reference information

Bibliographic references

  • Deposit

    WALKER, G.W. AND GRIGGS, A.B., 1953, GEOL. INVESTIGATIONS OF CHROMITE IN CALIF.: CDMG BULL. 134, PART II, CHAPT. 2, P. 52.

  • Deposit

    STINSON, M.C., 1975, CALIF. DIVISION OF MINES AND GEOLOGY MINERAL PROPERTY REPORT, UNPUBLISHED.

  • Production

    CDMG MINERAL PROPERTY REPORT, UNPUBLISHED

General comments

Subject category Comment text
Deposit ORE OCCURS IN IRREGULAR LENTICULAR POCKETS AND STRINGERS.
Deposit Discovery Year: 1880'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1982 Oster, Karel L. (Albers, John P.) 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.