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  3. Mineral Resource Data System (MRDS)

Red Hill Claim

Past Producer in Sonoma county in California, United States with commodities Chromium, Mercury
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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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Land status
  15. Ownership information
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10043533
MRDS ID M100314
Record type Site
Current site name Red Hill Claim

Geographic coordinates

Geographic coordinates: -122.85191, 38.79182 (WGS84)
Elevation 732
Relative position ASSUMED SPOT ON BOUNDARY BETWEEN 2 SECTIONS.

Site location context

Political divisions (FIPS codes)

Sonoma(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

The Geysers(quadrangle 1:24,000 scale)

Healdsburg(quadrangle 1:100,000 scale)

Santa Rosa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Russian(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 Sonoma

Public Land Survey System information

Meridian Township Range Section Fraction State
011N 009W 15,22 California

Commodities

Commodity Importance
Chromium Critical Primary
Mercury Tertiary

Materials information

Materials Type of material
Chromite Ore
Cinnabar Ore

Alteration

  • (Local) Silicification Of Serpentine

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite

Nearby scientific data

(1) -122.85191, 38.79182
ListMap

Economic information

Ore body information

  • General form LENSE

Controls for ore emplacement

  • Shear Zone

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Elder, G. W.
    Home office St. Helena, Ca.,
    First year 1918
  • Type Owner
    Owner Truitt, E. A.
    Home office Healdsburg, Ca.
    First year 1942

Comments on the production information

  • APPROXIMATELY 150-200 TONS PRODUCED

Comments on the workings information

  • WORKINGS CONSISTED (1942) OF A CUT 150 FT. LONG, 10 FT. WIDE AND 8 FT. DEEP; A PARTLY CAVED 15 FT. DRIFT AT ONE END OF THE CUT, AND 2 SMALL PITS.

Reference information

Bibliographic references

  • Deposit

    DOW, D.H. AND THAYER, T.P., 1946, GEOLOGICAL INVESTIGATIONS OF CHROMITE IN CALIF.: CALIF. DIVISION OF MINES BULLETIN 134, PART 2, CHAPT. 1, P. 27, 28, 36

General comments

Subject category Comment text
Deposit HIGH GRADE LENSES DISTRIBUTED OVER AN AREA 100 FT. LONG BY 6 FT. WIDE IN THE LARGE CUT. HIGH GRADE ORE WAS SOFT AND FRIABLE, LOW GRADE ORE SANDY.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1981 Oster, Karel L. (Albers, John P.) 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.