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Walker

Producer in Plumas county in California, United States with commodities Copper, Silver, Gold, Lead, Zinc
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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. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Land status
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10077104
MRDS ID W024539
Record type Site
Current site name Walker
Related records 10286027

Geographic coordinates

Geographic coordinates: -120.66854, 39.96016 (WGS84)
Elevation 1829
Relative position 9 MILES FROM SPRING GARDEN

Site location context

Political divisions (FIPS codes)

Plumas(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Ingalls(quadrangle 1:24,000 scale)

Portola(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

East Branch North Fork Feather(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Plumas 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 Plumas

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 024N;025N 012E;012E 05,06,07,29,30,31,08,32 California

Commodities

Commodity Importance
Copper Primary
Silver Secondary
Gold Secondary
Lead Tertiary
Zinc Critical Tertiary

Comments on the commodity information

  • CHALCOPYRITE IS THE MOST PROMINENT COPPER MINERAL IN THE ORE, IT CARRIES CONSIDERABLE BORNITE AND IN RICHEST STREAKS PYRITE IS PLENTIFUL.

Materials information

Materials Type of material
Chalcopyrite Ore
Cubanite Ore
Galena Ore
Jamesonite Ore
Pyrrhotite Ore
Stibnite Ore
Tetrahedrite Ore
Barite Gangue
Cordierite Gangue
Garnet Gangue
Magnetite Gangue
Quartz Gangue

Host and associated rocks

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

Nearby scientific data

(1) -120.66854, 39.96016
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Faults: Max. Displacement 20 Ft. Cut The Veins: A Qtz-Diorite Dike Is Found To Displace Veins 10 Ft.

Ore body information

  • Strike N 20 - 30 W
    Dip 55 - 75 E
    Length 304.8M
    Width 36.58M

Comments on the geologic information

  • GEOL.DESC: OLDEST FORMATION IN AREA IS A PRE-SILURIAN METARHYOLITE ON LITTLE GRIZZLY CREEK. OVERLYING THIS ARE: THE PEALE FORMATION (CARBONIFEROUS) COMPOSED OF SANDSTONES, SHALES AND SOME CHERTS; THE TAYLOR META-ANDESITE: THE ROBINSON FORMATION (CARBONIFEROUS) OF SANDSTONES AND SHALES WITH FEW LIMESTONE LENSES, AND CONGLOMERATE BEDS; THE KETTLE META-ANDESITE; AND THE TRAIL FORMATION (LOWER JURASSIC) OF SLATY SHALES WITH SOME INTERBEDDED SANDSTONES AND CONGLOMERATES. THESE FORMATIONS STRIKE N 30 W IN BELTS 1/2 - 1 MILE WIDE, EXTENDING SOUTHEASTERLY FROM GENESEE TO THE WALKER MINE. TRAIL FORMATION-ALTERED IN PART TO HORNFELS BY INTRUSION OF GRANODIORITE, ALTERATION IS INTENSE, LITTLE REMAINS TO INDICATE ORIGINAL COMPOSITION. COUNTRY ROCK IS A FINE-GRAINED DARK SCHIST OR HORNFEL FORMED BY ACTION OF IGNEOUS INTRUSIONS ON SEDIMENTARY SERIES.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Large
Significant No
Production years 1931 ,

Land status

Ownership category National Forest

Comments on the production information

  • DISCOVERED IN 1904 , DID NOT BEGIN DEVELOPMENT UNTIL 1915 , MINE SHUT DOWN 1932 - 1935 . 1935 IT BEGAN TREATING 500 - 600 TONS/DAY, WHICH HAD INCREASED BY 1937 TO 1200 TONS/DAY. NO KNOWN PB, ZN RECOVERED.

Workings at the site

  • Type of workings Underground
    Overall depth 274.32M

Comments on the workings information

  • MAIN HAULAGE IS THE 7TH LEVEL ADIT, 10,000 FT. LONG. A RAISE WAS BEING DRIVEN FROM PIUTE OREBODY TO SURFACE IN 1924. A WINZE HAD BEEN SUNK 500 FT. ON S. OREBODY FROM 7TH LEVEL TO 10TH LEVEL, AND 150 FT. OF DRIFTING DONE ON LATTER. 350 FT. WINZE SUNK ON C ORE BODY FROM 7TH TO 9TH LEVEL, 900 FT. OF DRIFTING DONE. ON 8TH LEVEL, 600 FT. OF DRIFTING DONE ON S. OREBODY AND 400 FT. ON C. OREBODY. ALL STOPING ABOVE 7TH LEVEL.

Reference information

Bibliographic references

  • Deposit

    AVERILL, C.V., 1937 , MINERAL RESOURCES OF PLUMAS COUNTY; CALIF. JOUR. MINES AND GEOLOGY, VOL. 33 , NO. 2 ; DIV. OF MINES, P. 95 - 103

  • Deposit

    AVERILL, C.V., 1924 , REDDING FIELD DIVISION; 24TH REPT. STATE MIN.: CALIF. MIN. BUR., P. 280 - 285

  • Deposit

    GOODWIN, J.G., 1957 , LEAD AND ZINC IN CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NOS. 3 & 4 ; DIV. OF MINES, P. 599

  • Deposit

    LOGAN, C.A., 1921 , PLUMAS COUNTY; 17TH REPT. STATE MIN.; CALIF. MIN. BUR., P. 471 - 473

  • Production

    AVERILL, C.V., 1937

General comments

Subject category Comment text
Deposit WALKER VEIN SYSTEM HAS A BARREN-APPEARING OUTCROP. CENTRAL OREBODY HAS A MAX. LENGTH OF 1,000 FT. THE SOUTH OREBODY IS 250 FT LONG IN TWO PARTS, MAIN AND HANGING-WALL. THE NORTH OREBODY IS 1,000 FT. LONG. THE 712 OREBODY IS 200 FT. LONG. THE PIUTE OREBODY IS 800 FT. LONG, AVG. WIDTH 35 FT.
Deposit SHRINKAGE METHODS USED TO EXTRACT ORE. COMPRISED OF 1140 ACRES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1978 Fraticelli, L. A. (Albers, J.) U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

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.