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Alice June Claim, Marsh Flats Chrome Assoc. Properties

Past Producer in Tuolumne 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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Production statistics
  17. Reserves and resources
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10043436
MRDS ID M100197
Record type Site
Current site name Alice June Claim, Marsh Flats Chrome Assoc. Properties
Alternate or previous names Claim: Alice June Extension, Mum, Mum Extension.

Geographic coordinates

Geographic coordinates: -120.35989, 37.80992 (WGS84)
Elevation 457
Relative position APPROX. 2.5 MILES S OF JACKSONVILLE, CA.

Site location context

Political divisions (FIPS codes)

Tuolumne(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Moccasin(quadrangle 1:24,000 scale)

Oakdale(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Tuolumne(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Tuolumne

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 001S 015E 31 N2 California

Comments on the location information

  • WORKINGS LOCATED ON NE SLOPE OF A LOW GENTLE RIDGE, NEAR THE BOTTOM OF A SMALL GULCH.

Commodities

Commodity Importance
Chromium Critical Primary

Comments on the commodity information

  • ABOVE ANALYSIS OF 1950'S PRODUCTION

Materials information

Materials Type of material
Chromite Ore
Uvarovite Gangue

Alteration

  • (Local) Complete Serpentinization Of Host Rock.

Analytical data

Result AVG. CONCENTRATE GRADE 44.65% CR203
Result CR TO FE RATIO 2.3 TO 1.

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic

Nearby scientific data

(1) -120.35989, 37.80992
ListMap

Economic information

Ore body information

  • General form IRREG
    Strike NW
    Dip 40-90 E

Comments on the geologic information

  • THE CLAIMS ARE LOCATED IN THE EASTERNMOST AND LARGEST OF TWO SERPENTINE BELTS THAT TREND NW ACROSS THE COUNTY. THE BELT IS EXPOSED OVER AN AREA 30K BY 6K AND CONTAINS MOST OF THE COUNTY'S CR DEPOSITS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1917
Discoverer John Kahl, L.N. Ferretti, J.M. And C.J. Hughes

Mining district

District name Marsh'S Flat Area

Land status

Ownership category Federal

Ownership information

  • Type Operator
    Owner Hemmings, A. E.
    First year 1958
  • Type Owner
    Owner Morrisey, William C.
    First year 1948
  • Type Owner
    Owner U.S. Government
    First year 1948

Production statistics

  • Year 1918
    Period 1917-1918
    Material ORE
    Accuracy Estimate
    Description Cp_Grade: ^35% Cr2o3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Cr2O3 Chromium Chromium 35wt-pct
  • Year 1955
    Period 1954-1955
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^Avg. 34.87% Cr2o3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Cr2O3 Chromium Chromium 35wt-pct

Comments on the production information

  • MOST IF NOT ALL 1950'S PRODUCTION FROM PREVIOUSLY MINED ORE.

Reserves and resources

  • Type In-situ
    Estimate year 1944
    Total resources 3000mt ore
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 15 wt-pct Chromium Major 1944
  • Type Dump
    Estimate year 1975
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 5 wt-pct Chromium Major 1975

Comments on the reserve resource information

  • CATER, 1948, CDMG BULL 134, PART 3, CHAPT. 1, P. 17.; 2) STINSON, 1975, CDMG MINERAL PROPERTY REPORT, UNPUBLISHED.

Comments on the workings information

  • WORKINGS CONSISTED OF 3 PITS, EXTENSIVE BULLDOZER SCRAPING AND NUMEROUS SHALLOW TRENCHES (1943).

Reference information

Bibliographic references

  • Deposit

    CATER, F.W. JR., 1948, CDMG BULL 134, PART 3, CHAPT. 1, P. 16, 17.

  • Deposit

    STINSON, M.C., 1975, CDMG MINERAL PROPERTY REPORT, UNPUBLISHED.

  • Production

    STINSON, 197J, CDMG MINERAL PROPERTY REPORT UNPUBLISHED

General comments

Subject category Comment text
Deposit MINOR FAULTING DISRUPTS MOST OF THE LARGER ORE BODIES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1982 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.