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Overlook

Occurrence in Lake 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. Reporter information

Geologic information

Identification information

Deposit ID 10030707
MRDS ID M009033
Record type Site
Current site name Overlook
Related records 10285074

Geographic coordinates

Geographic coordinates: -122.94164, 38.93237 (WGS84)
Relative position 0.2 MI. N OF SECOND MILEPOST W OF HIGHLAND SPRS ON THE HIGHLAND SPRS-PIETA ROAD. 13 MI. FROM PIETA

Site location context

Political divisions (FIPS codes)

Lake(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Highland Springs(quadrangle 1:24,000 scale)

Healdsburg(quadrangle 1:100,000 scale)

Santa Rosa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Cache(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

LG(Federal land areas administered by LG)

Geographic areas

Country State County
United States California Lake

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 013N 010W 35 California

Comments on the location information

  • LOCATION APPROX, UTM APPROX. BULL. 125 AND 152 PLACE DEPOSIT IN SEC. 33 WHICH IS IN MENDOCINO COUNTY

Commodities

Commodity Importance
Manganese Critical Tertiary

Comments on the commodity information

  • TOO MUCH SILICA AND TOO LITTLE MANGANESE TO BE OF COMMERCIAL VALUE.

Nearby scientific data

(1) -122.94164, 38.93237
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: SILICEOUS IRON ORE WITH INTERBEDDED CHERT, AND SOME OPALINE IRON ORE. SOME LENSES OF MASSIVE CHERT CUT BY VEINLETS OF MANGANESE OXIDE ARE INTERCALATED IN THE IRON ORE. THE CHERT, PINK WITH POROUS TEXTURE, OR RED WITH RADIOLARION, OCCUR AS THIN BEDS IN IRON ORE PARTINGS. DEPOSIT IS SURROUNDED BY FRANCISCAN GREENSTONE.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner J. D. O'Brien, R. C. Miller

Comments on the production information

  • NO PRODUCTION

Reference information

Bibliographic references

  • Deposit

    CALIF. B. 125, 1943, P. 126

  • Deposit

    CALIF. BULL. 152, PP. 94-95

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.