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Welch Prospect

Occurrence in Sonoma county in California, United States with commodity Chromium
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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. Land status
  12. Ownership information
  13. Reserves and resources
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10043537
MRDS ID M100318
Record type Site
Current site name Welch Prospect

Geographic coordinates

Geographic coordinates: -123.06608, 38.61321 (WGS84)
Relative position ASSUMED SPOT AT CENTER OF SECT. 22

Site location context

Political divisions (FIPS codes)

Sonoma(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cazadero(quadrangle 1:24,000 scale)

Point Arena(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
009N 011W 22 California

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Nearby scientific data

(1) -123.06608, 38.61321
ListMap

Economic information

Ore body information

  • General form IRREGULAR
    Strike NW
    Dip 90
    Thickness 0.61M
    Length 15.24M

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Welch, Charles
    Home office Guerneville, Ca.
    First year 1918

Reserves and resources

  • Type In-situ
    Estimate year 1946
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 42 wt-pct Chromium Major 1946

Comments on the reserve resource information

  • DOW AND THAYER (1946)

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. 29, 36

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.