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  3. Mineral Resource Data System (MRDS)

Graham Prospect

Occurrence in Mendocino county in California, United States with commodity Manganese
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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. Mineral rights holdings
  12. Ownership information
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10116319
MAS/MILS ID 0060450037
Record type Site
Current site name Graham Prospect

Geographic coordinates

Geographic coordinates: -123.4133, 39.58066 (WGS84)
Elevation 610

Site location context

Political divisions (FIPS codes)

Mendocino(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Longvale(quadrangle 1:24,000 scale)

Covelo(quadrangle 1:100,000 scale)

Ukiah(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Eel(hydrologic unit)

Northern California Coastal(hydrologic accounting unit)

Klamath-Northern California Coastal(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Mendocino

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 020 N 014 W California

Commodities

Commodity Importance
Manganese Critical Tertiary

Materials information

Materials Type of material
Chromite Unknown

Nearby scientific data

(1) -123.4133, 39.58066
ListMap

Economic information

Ore body information

  • Strike N20E
    Dip 35E
    Thickness 0M
    Length 0M
    Width 75M
    Depth to top 0M
    Field Value
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 LENTICULAR
    Type of Orebody #2 OTHER
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control LITHOLOGY
    Type of Wallrock Alter. #1 CARBONITIZATION
    Strike And Dip N20E:35E
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 820823

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1942

Mineral rights holdings

Type of mineral rights Unknown

Ownership information

  • Type Owner
    Owner Mrs Vollie Graham
    Home office California
    Year 1974
  • Type Operator
    Owner Noble Electric Steel Co.
    Home office California
    Year 1976
    Last year 1918
  • Type Owner
    Owner Edward George
    Home office California
    Year 1976

Reference information

Bibliographic references

  • Deposit

    DOW,D.H.,AND THAYER,T.P.,1946,CDMAND G BULL 134,PT.2,CHAP.2,

  • Deposit

    3 MI S OF FARLEY

General comments

Subject category Comment text
Deposit WHEN WELLS VISTED THE CLAIMS IN 1941 MOST OF THE WORKINGS WERE D AND LITTLE ORE COULD BE SEEN. INSUFFICIENT DATA FOR MATRIX CALCULATIONS.

Reporter information

Type Date Name Affiliation Comment
Reporter 22-MAY-1986 Western Field Operations Center (WFOC) U.S. Bureau of Mines

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.