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  3. Mineral Resource Data System (MRDS)

Dow Prospect

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

Geologic information

Identification information

Deposit ID 10095095
MRDS ID M008962
Record type Site
Current site name Dow Prospect
Related records 10115434

Geographic coordinates

Geographic coordinates: -122.63191, 39.09294 (WGS84)
Relative position 2 MI. BY TRAIL FROM DOW RANCH, WHICH IS 6 MI. BY ROAD FROM WILLIAMS - CLEAR LAKE ROAD, AND 36 MI. FROM WILLIAMS. IT IS 600 FT. ABOVE THE BOTTOM OF QUARTZ CANYON, A TRIBUTARY OF WOLF CREEK.

Site location context

Political divisions (FIPS codes)

Lake(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Clearlake Oaks(quadrangle 1:24,000 scale)

Lakeport(quadrangle 1:100,000 scale)

Ukiah(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

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Lake

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 014N 007W 04 California

Commodities

Commodity Importance
Manganese Critical Tertiary

Materials information

Materials Type of material
Pyrolusite Ore

Analytical data

Result AVERAGE GRADE 35 PERCENT MANGANESE

Nearby scientific data

(1) -122.63191, 39.09294
ListMap

Economic information

Ore body information

  • Strike N 55 TO 80 W
    Dip 45 TO 50 SW
    Thickness 0.91M
    Depth to bottom 0.61M

Comments on the geologic information

  • GEOL.DESC: ORE IS IRREGULARLY DISTRIBUTED IN CHERT ALONG STRIKE OF N 55 - 80 W. THE ORE BED DIPS 45 TO 50 S.W. AND IS SOFT BLACK PYROLUSITE WITH CORES OF WHITE TO REDDISH BROWN LEACHED CHERT. SHALE AND SANDSTONE ARE INTERBEDDED IN THE CHERT COUNTRY ROCK.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner Frank S. Simons And Max D. Crittenden, Jr.

Comments on the workings information

  • LITTLE DEVELOPMENT HAS BEEN DONE

Reference information

Bibliographic references

  • Deposit

    CALIF. BULL. 152, PP. 89-90

  • Deposit

    D.O.M. BULL. 125 1943 P. 124

General comments

Subject category Comment text
Deposit BEST ORE CONTAINS ABOUT 45% MANGANESE;AVERAGE GRADE IS NEARLY 35%; SILICA CONTENT IS 20 TO 30%.

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.