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Rainbow Ledge

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. Ore body information
  9. Economic information about the deposit and operations
  10. Ownership information
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10030709
MRDS ID M009037
Record type Site
Current site name Rainbow Ledge
Related records 10139024

Geographic coordinates

Geographic coordinates: -122.94219, 39.10737 (WGS84)

Site location context

Political divisions (FIPS codes)

Lake(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Lakeport(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)

Geographic areas

Country State County
United States California Lake

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 015N 010W 35 California

Comments on the location information

  • LOCATED IN SE 1/4 NW 1/4 SECTION 35

Commodities

Commodity Importance
Manganese Critical Tertiary

Analytical data

Result ORE GRADE 45 TO 55 PERCENT MANGANESE, 10 TO 22 PERCENT SILICA.

Nearby scientific data

(1) -122.94219, 39.10737
ListMap

Economic information

Ore body information

  • Thickness 6.1M
    Length 4.57M
    Width 0.3M

Comments on the geologic information

  • GEOL.DESC: NARROW LENS OF CHERT, SELDOM OVER 20 FT. THICK, IS SURROUNDED BY SANDSTONE. THERE IS ABUNDANT SHEARING, AND A CROSSFAULT AT THE MOUTH OF THE CUT APPEARS TO CUT OFF THE ORE. THE ORE IS MANGANESE OXIDES.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner O. B. Tyrer, And Erskine

Comments on the production information

  • NO PRODUCTION.

Comments on the workings information

  • OPEN CUT

Reference information

Bibliographic references

  • Deposit

    CALIF. B. 125, 1943, P. 127

  • Deposit

    CALIF. BULL. 152, P. 97

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.