Duffey Lease

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

Geologic information

Identification information

Deposit ID 10098562
MRDS ID M100342
Record type Site
Current site name Duffey Lease

Geographic coordinates

Geographic coordinates: -120.79186, 39.03017 (WGS84)
Location accuracy 1000(meters)
Relative position Assumed Spot Center Sw Of Nw, 30, Assumed Spot Center Sw 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 California

Comments on the location information

  • LOCATION UNCERTAIN

Commodities

Commodity Importance
Chromium Primary

Materials information

Materials Type of material
Chromite Ore

Nearby scientific data

(1) -120.79186, 39.03017

Comments on the geologic information

  • DEPOSIT OCCURS IN THE EASTERNMOST OF 3 SUB PARALLEL BELTS OF ULTRAMAFIC ROCKS THAT TREND NORTHWARD ACROSS PLACER CO.

Economic information

Economic information about the deposit and operations

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

Mining district

District name Forest Hill Divide Area

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Mayflower Gravel Mining Co. (1918

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M100342

Bibliographic references

  • Deposit

    RYMEARSON, G.A., 1953, CDMG BULL 134, PT. 3, CHAPT. 5, P. 308

Reporter information

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