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Courtwright Property Woods and Roach Lease

Producer in Amador 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. Economic information about the deposit and operations
  10. Land status
  11. Ownership information
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10028092
MRDS ID M004896
Record type Site
Current site name Courtwright Property Woods and Roach Lease

Geographic coordinates

Geographic coordinates: -120.8663, 38.32934 (WGS84)
Relative position NE 1/4 SW 1/4

Site location context

Political divisions (FIPS codes)

Amador(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Jackson(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Mokelumne(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Amador

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 006N 010E 34 California

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Nearby scientific data

(1) -120.8663, 38.32934
ListMap

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Emma Garibaldi
    First year 1953

Comments on the production information

  • PAST PRODUCTION HAS BEEN 80 TONS OF 38-40 PERCENT ORE. ABOUT 5 OR 6 TONS OF ORE IN SIGHT AND 8 TONS OF 38 PERCENT ORE ON THE DUMP. A SMALL PIT 300 YARDS SE OF THE SHAFTS HAS HAD ABOUT 1/2 TON OF ORE REMOVED AND A SMALL AMOUNT OF LOW GRADE ORE IS IN SIGHT; BETWEEN THE TWO WORKINGS THERE ARE OCCASIONAL SMALL LENSES OF ORE, THE LARGEST OF WHICH WOULD NOT CONTAIN MORE THAN 50 POUNDS OF ORE

Comments on the workings information

  • TWO SHAFTS, 30 AND 32 FT. DEEP, SEVERAL TRENCHES

Reference information

Bibliographic references

  • Deposit

    DOM BULL. 134, PT. 3, CHAP. 2, P.54-55

  • Deposit

    CALIF. JOUR. MINES & GEOL. V. 50, NO. 1 , JAN. 1954, P.234

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Gere, W. 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.