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  3. Mineral Resource Data System (MRDS)

Fourth of July Claim

Past Producer in Calaveras county in California, United States with commodities Gold, Platinum
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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. Mineral occurrence model information
  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. Mining district
  15. Land status
  16. Ownership information
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10038063
MRDS ID M045334
Record type Site
Current site name Fourth of July Claim

Geographic coordinates

Geographic coordinates: -120.85769, 38.23935 (WGS84)
Elevation 219
Relative position 3/4 MI NORTH-NORTHWEST OF CAMPO SECO AND 1/2 MI SOUTH OF MOKELUMNE RIVER

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Valley Springs(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

San Joaquin(hydrologic accounting unit)

San Joaquin(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 Calaveras

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 005N 010E 34 SE4 California

Comments on the location information

  • LOCATION GIVEN IS FOR SOUTHERN OF TWO SHAFTS SHOWN IN QUARTER SECTION ON TOPO MAP

Commodities

Commodity Importance
Gold Primary
Platinum Critical Secondary

Comments on the commodity information

  • UNVERIFIED REPORT OF PT

Materials information

Materials Type of material
Gold Ore

Analytical data

Result GOLD IS 940 FINENESS IN AND NEAR BEDROCK

Mineral occurrence model information

Model code 119
USGS model code 39a
Deposit model name Placer Au-PGE
Mark3 model number 54

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel
    Rock unit name Ione Formation
    Rock description Ione Formation
    Stratigraphic age (youngest) Eocene
    Stratigraphic age (youngest) Eocene

Nearby scientific data

(1) -120.85769, 38.23935
ListMap

Economic information

Ore body information

  • General form STREAM SEDIMENT DEPOSITS
    Depth to bottom 27.43M

Controls for ore emplacement

  • Stream Hydraulics

Comments on the geologic information

  • 7 FT OF CLAYEY GRAVEL OVERLIAN BY 60-80 FT OF ASH INTERBEDDED WITH GRAVEL; PARTLY CEMENTED GRAVEL IS ABOUT 4 FT DEEP. ALTERED ANDESITE BEDROCK.

Economic information about the deposit and operations

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

Mining district

District name Camanche (Mokelumne River) District

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Woodsworth, Willard
    First year 1936
  • Type Owner
    Owner Frank E. Pickard
    First year 1936

Comments on the production information

  • 0.023 OZ/TON (0.8 PPM) AU. ACTIVE 1935-1937. TWO MEN EMPLOYED IN 1936. OTHER SOURCE SAYS GRAVELS AVERAGE ABOUT $1.15/YD AU, AND THE 1.5 FT OF GRAVEL ON SURFACE AVERAGES $.65/YD AU

Workings at the site

  • Type of workings Underground
    Length 198.12M
    Overall depth 19.81M

Comments on the workings information

  • DRIFTING IN ALL DIRECTIONS FROM VERTICAL SHAFT

Comments on development

  • PRODUCTION YEARS 1935-1937

Reference information

Bibliographic references

  • Deposit

    LOGAN, C.A., AND FRANKE, HERBERT, 1936, MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 32, NO. 3, P. 340, 359.

  • Deposit

    CLARK, W.B., AND LYDON, P.A., 1962, MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY, CALIFORNIA: CALIFORNIA DIVISION OF MINES AND GEOLOGY COUNTY REPORT 2, P. 197.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-74 Blair, Will N. U.S. Geological Survey
Updater 01-JAN-89 Peterson, Jocelyn A. 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.