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  3. Mineral Resource Data System (MRDS)

Big Ledge

Past Producer in Siskiyou county in California, United States with commodity Gold
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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. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10035454
MRDS ID M023253
Record type Site
Current site name Big Ledge
Alternate or previous names Lewis
Related records 10141931

Geographic coordinates

Geographic coordinates: -122.91473, 41.59178 (WGS84)
Elevation 869
Relative position 1 MI. N. ORO FINO

Site location context

Political divisions (FIPS codes)

Siskiyou(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Greenview(quadrangle 1:24,000 scale)

Yreka(quadrangle 1:100,000 scale)

Weed(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Scott(hydrologic unit)

Klamath(hydrologic accounting unit)

Klamath-Northern California Coastal(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Siskiyou

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 043N 009W 08 California

Comments on the location information

  • UTM EST. SW 1/4 NW 1/4

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Host and associated rocks

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

Nearby scientific data

(1) -122.91473, 41.59178
ListMap

Economic information

Ore body information

  • Thickness 0.38M

Economic information about the deposit and operations

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

Mining district

District name Oro Fino

Comments on the workings information

  • 360 FT. ADIT

Reference information

Bibliographic references

  • Deposit

    BROWN, G.C., 1914, THE COUNTIES OF SHASTA, SISKIYOU AND TRINITY, CALIF.: CALIF. JOUR. MINES & GEOLOGY, V. 14, PT. 4, P. 826

  • Deposit

    LOGAN, C.A., 1925, SACRAMENTO FIELD DIVISION: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, VOL. 21, NO. 4, P. 431

General comments

Subject category Comment text
Deposit POCKETS ORE SHOOT 100 FT. LONG, 15 IN. THICK.
Deposit 20 ACRES. PATENTED ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1980 Nelson, Scott C. (Albers, John, P.) 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.