Washout Claim

Past Producer in Placer county in California, United States with commodity Chromium

Geologic information

Identification information

Deposit ID 10043591
MRDS ID M100379
Record type Site
Current site name Washout Claim

Geographic coordinates

Geographic coordinates: -120.78631, 39.03461 (WGS84)
Elevation 997
Location accuracy 1000(meters)
Relative position Assumed Spot Center Ne Of Ne Of Nw, 30
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Geographic areas

Country State County
United States California Placer

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 014N 011E 30 NE OF NE OF NW California

Comments on the location information

  • LOCATED ON A SPUR WHICH LEADS SE OFF FOREST HILL DIVIDE AND 1/4 MILE NE OF THE OLD PARAGON GOLD MINE.

Commodities

Commodity Importance
Chromium Primary

Materials information

Materials Type of material
Chromite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite

Nearby scientific data

(1) -120.78631, 39.03461

Ore body information

  • General form LENSE
    Strike N 40 W
    Dip 60 SE TO 90
    Thickness 3M
    Width 5M
    Length 38M

Comments on the geologic information

  • CLM. NEAR NW EDGE OF A NE-SW TRENDING ULTRAMAFIC BODY THAT IS APPROXIMATELY 1.5 BY 5 MILES IN SIZE. THE ULTRAMAFIC BODY IS BORDERED BY TERTIARY VOLCANICS AND PALEOZOIC METAMORPHIC ROCKS.

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1940
Discovery method Ore-Mineral In Place
Year of first production 1941
Year of last production 1944

Mining district

District name Forest Hill Divide Area

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Ford, Lower, Myers
    First year 1944
  • Type Owner
    Owner G. S. Ford, J. S. Lower, B. Myers
    First year 1944

Production statistics

  • Year 1944
    Period 1941-1944
    Material ORE CR
    Accuracy Accurate
    Description Cp_Grade: ^Avg. 47.29% Cr2o3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Cr2O3 Chromium Chromium 47wt-pct

Comments on the workings information

  • WORKINGS CONSISTED OF A 7.5 M SHAFT, AN OPEN CUT AND A CROSS CUT.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M100379

Bibliographic references

  • Deposit

    RYNEARSON, G. A., 1953, CDMG BULL 134, PT. 3, CHAPT. 5, P. 227, 228, 313.

  • Deposit

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

  • Production

    CDMG MINERAL PROPERTY REPORT, 1975, UNPUBLISHED

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-83 Oster, Karel L. (Albers, John P.) U.S. Geological Survey