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Uncle Sam Mine

Past Producer in Sierra county in California, United States with commodities Gold, Silver
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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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10103113
MRDS ID M021748
Record type Site
Current site name Uncle Sam Mine
Alternate or previous names Simpson, Verrue, Yates, Keller

Geographic coordinates

Geographic coordinates: -120.8527, 39.50821 (WGS84)
Relative position 4 MI SSW OF DOWNIEVILLE

Site location context

Political divisions (FIPS codes)

Sierra(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Downieville(quadrangle 1:24,000 scale)

Portola(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Yuba(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Tahoe National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Sierra

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 019N 010E 15,16,21,22 California

Commodities

Commodity Importance
Gold Primary
Silver Tertiary

Comments on the commodity information

  • MACBOYLE, 1920 , ESTIMATED 2000 TONS OF $7/TON ORE EXPOSED. IN 1914 ORE CARRIED EQUAL VALUES OF AU & AG.

Materials information

Materials Type of material
Gold Ore
Marcasite Ore
Pyrite Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -120.8527, 39.50821
ListMap

Economic information

Ore body information

  • Strike N 20 W
    Dip 80 SE
    Thickness 5.49M

Comments on the geologic information

  • 2-18 FT. THICK VEIN & LENSES W CHLORITIC SCHIST & BLACK COAL (?) FOOTWALL & HARD DIORITE HANGING WALL. VEIN MAY CHANGE FROM 60 NE TO 80 SE. MARKED CHANGE IN VEIN AFTER PASSING WATER LEVEL. MACBOYLE, 1920 , CONSIDERS ORE THE MOST PECULIAR EVER FOUND IN THE DISTRICT. TO A POINT 30 FT. BELOW THE VEIN CONTAINED CONSIDERABLE IRON SULFIDES. SOME GOLD & TRACES OF SILVER. FURTHER DOWN THE SULFIDES ARE DISPLACED BY ARSENICAL MINERALS W HIGHER AU CONTENT & A RAPID INCREASE IN AG VALUES.

Economic information about the deposit and operations

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

Comments on the production information

  • WORK IN EARLY DAYS FOR GRAVEL YIELDED $100,000 BEFORE VEIN WAS DISCOVERED AND VEIN PRODUCTION BEGAN IN 1910 .

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 76.2M

Comments on the workings information

  • 14 DEGREE INCLINED SHAFT 1037 FT., 700 FT. X-CUT TO 55 DEGREE INCLINED SHAFT 75 FT. TO 1ST LEVEL, 100 FT. TO 2ND 250 FT. OF DRIFTS.

Reference information

Bibliographic references

  • Deposit

    AVERILL, C. V., 1942 , MINES AND MINERAL RESOURCES OF SIERRA CO.: CDM CALIF. JOUR. MINES AND GEOL, VOL 38 , NO 1 , P. 66 .

  • Deposit

    MACBOYLE, E., 1920 , MINES AND MINERAL RESOURCES SIERRA CO.: CSMB 16TH REPORT STATE MINERALOGIST, DEC 1918 , P. 131 , 132 .

  • Production

    MACBOYLE, 1920

General comments

Subject category Comment text
Deposit VEIN, ORE SHOOT
Deposit OWNERS ( MACBOYLE, 1920 ): J. G. BINNING, ALLEGHANY; O. T. OWENS, H. T. GOULD, FOREST. BONDED TO NORTH FORK MINING CO., 1301 MERCHANTS NATIONAL BANK BLD, S. F.; A. RUSSELL, 1301 MERCHANTS NAT. BANK BLD., S. F., PRESIDENT; L. TASHEIRA, 405 CROCKER BLD, SECRETARY. GRAVEL RIGHTS REBONDED TO WISCONSIN & N. FORK GRAVEL MINES CO. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1979 Hayden, F. (Albers, J.) 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.