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  3. Mineral Resource Data System (MRDS)

Chicago

Past Producer in Placer county in California, United States with commodities Gold, Copper, 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. Mining district
  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 10103114
MRDS ID M021828
Record type Site
Current site name Chicago
Alternate or previous names Falls Creek
Related records 10115652

Geographic coordinates

Geographic coordinates: -120.43074, 39.21433 (WGS84)
Elevation 1585
Relative position 16 MI. SE SODA SPRINGS STATION 2 MI. SE SNOW MT.

Site location context

Political divisions (FIPS codes)

Placer(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Royal Gorge(quadrangle 1:24,000 scale)

Truckee(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

North Fork American(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 Placer

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 016N 014E 32 California

Comments on the location information

  • UTM ACC. N 1/2 , NW 1/4

Commodities

Commodity Importance
Gold Primary
Copper Secondary
Silver Secondary

Materials information

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

Analytical data

Result OXIDIZED ORE ASSAYS AT $61/TON, SULFIDES ASSAY AT $17 AU/TON, 1/2 OZ AG/TON AND 8% CU.

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -120.43074, 39.21433
ListMap

Economic information

Ore body information

  • Strike N 30 W
    Dip 35 NE
    Thickness 0.46M

Economic information about the deposit and operations

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

Mining district

District name Tahoe

Land status

Ownership category National Forest

Workings at the site

  • Type of workings Underground
    Length 67M

Comments on the workings information

  • TUNNELS

Reference information

Bibliographic references

  • Deposit

    WARING, CLARENCE A., 1917 , PLACER COUNTY: REPORT 15 OF THE STATE MINERALOGIST, CALIFORNIA STATE MINING BUREAU, P. 336

General comments

Subject category Comment text
Deposit VEIN, 18 IN. THICK

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1979 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.