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Blue Ledge

Past Producer in Siskiyou county in California, United States with commodities Copper, Zinc, Silver, Gold, Lead
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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. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Ore body information
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Production statistics
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10072341
MRDS ID W017560
Record type Site
Current site name Blue Ledge
Related records 10287237

Geographic coordinates

Geographic coordinates: -123.10113, 41.94983 (WGS84)
Elevation 1524
Relative position 33 MILES SW OF JACKSONVILLE, OREGON

Site location context

Political divisions (FIPS codes)

Siskiyou(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Dutch Creek(quadrangle 1:24,000 scale)

Happy Camp(quadrangle 1:100,000 scale)

Weed(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Applegate(hydrologic unit)

Southern Oregon Coastal(hydrologic accounting unit)

Oregon-Washington Coastal(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Rogue River-Siskiyou National Forests(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Siskiyou

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 048N;048N 011W;011W 35;34 California

Commodities

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

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Limonite Ore
Malachite Ore
Pyrite Ore
Pyrrhotite Ore
Sphalerite Ore
Biotite Gangue
Calcite Gangue
Quartz Gangue
Tourmaline Gangue

Alteration

  • (Local) Quartz-Sericite

Mineral occurrence model information

Model code 184
USGS model code 28a
Deposit model name Massive sulfide, kuroko
Mark3 model number 93

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -123.10113, 41.94983
ListMap

Economic information

Ore body information

  • General form LENTICULAR
    Strike N
    Dip 60 W
    Thickness 10.67M

Comments on the geologic information

  • GEOL.DESC: FOOTWALL IS GRAY TO BLACK MICACEOUS SCHIST HANGING WALL IS WHITE MICA SCHIST.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Large
Significant Yes
Production years 1917 - 1920 AND 1929 - 1930

Mining district

District name Elliott Creek

Land status

Ownership category National Forest

Production statistics

  • Year 1920
    Period 1920
    Material ORE
    Accuracy Estimate
    Description Cp_Grade: ^4.8 % Cu, .35 Oz/Ton Au, 1.5 Oz/Ton Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Silver Silver 42g/mt
    Ore Gold Gold 10g/mt
    Ore Copper Copper 5wt-pct

Comments on the production information

  • AVERAGE SMELTER RECOVERY; 2.7 % ZN, 14 % CU, 5.8 OZ/TON AG AND .09 OZ/TON AU. MINOR LEAD RECOVERED.

Workings at the site

  • Type of workings Underground
    Length 731.52M
    Overall depth 182.88M

Comments on the workings information

  • PAY SHOOT 1500 FT. LONG AND 5 FT. WIDE DEVELOPED FOR LENGTH OF 1800 FT. AND DEPTH OF 600 FT. BY SERIES OF ADITS AND DRIFTS.

Reference information

Bibliographic references

  • Deposit

    AVERILL, C. V., 1935 , MINES AND MINERAL RESOURCES OF SISKIYOU COUNTY; JOUR. MINES AND GEOLOGY; VOL. 31 , NO. 3 , P. 271 - 272

  • Deposit

    GOODWIN, J. G., 1957 , LEAD AND ZINC IN CALIFORNIA; JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 3 & 4 P. 701.

  • Deposit

    O'BRIEN, J. C., 1947 , MINES AND MINERALS OF SISKIYOU COUNTY: JOUR. MINES AND GEOLOGY VOL. 43 , NO. 4 , P. 424.

  • Production

    GOODWIN, J. G., 1957 , (SEE REF.)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1976 Weeks, Robert 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.