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Spy Rock Guthrie

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

Geologic information

Identification information

Deposit ID 10031371
MRDS ID M010089
Record type Site
Current site name Spy Rock Guthrie
Related records 10237343

Geographic coordinates

Geographic coordinates: -123.50361, 39.83902 (WGS84)
Relative position THIS DEPOSIT IS PROBABLY IN SEC. 15, POSSIBLY NEAR CENTER. SW1/4 ON THE TRAIL FROM SPY ROCK TO CUMMINGS, 5 MI. WEST OF SPY ROCK STATION ON THE NORTHWESTERN PACIFIC R.R. AND 6 MI. EAST OF CUMMINGS.

Site location context

Political divisions (FIPS codes)

Mendocino(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Tan Oak Park(quadrangle 1:24,000 scale)

Covelo(quadrangle 1:100,000 scale)

Ukiah(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Fork 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 023N 015W 14 California

Commodities

Commodity Importance
Manganese Critical Tertiary

Analytical data

Result AVERAGE GRADE 33 PERCENT MANGANESE AND 35 PERCENT SILICA.

Nearby scientific data

(1) -123.50361, 39.83902
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: MASSIVE GRANULAR CHERT STAINED WITH MANGANESE OXIDE AND SOME SMALL IRREGULAR LENSES OF SILICEOUS ORE. MASSIVE CHERT IS OVERLAIN BY THIN BEDDED RADIOLARIAN CHERT WHICH PROBABLY RESTS ON SANDSTONE.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner Alex Guthrie, G. S. Simmerley

Comments on the production information

  • NOBLE ELECTRIC STEEL CO. OPERATED PROSPECT IN 1916 AND 1917 AND REMOVED 20 TONS OF ORE WHICH WAS NEVER SHIPPED. AVERAGE SAMPLE OF ORE ON PILE ASSAYED 33.4 PERCENT MANGANESE AND 34.7 SILICA.

Comments on the workings information

  • OPEN CUT.

Reference information

Bibliographic references

  • Deposit

    D.O.M. BULL. 152, PP. 139-140

General comments

Subject category Comment text
Deposit EC. MINERAL MAP OF CALIF., NO. 5 - MANGANESE (1943) SPOTS THIS MINE IN APPROX. SEC. 9 THIS TOWNSHIP; HOWEVER, FROM THE DESCRIPTION IN B. 152 IT WOULD APPEAR TO BE IN APPROX. SEC. 14. CLAIM IS 1 MI. FROM NOBLE ELECTRIC SHELL ROCK DEPOSIT.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-DEC-1977 Killman, K.; 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.