1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Nimshew

Producer in Butte county in California, United States with commodities Gold, Platinum
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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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10038070
MRDS ID M045343
Record type Site
Current site name Nimshew
Alternate or previous names Nimshaw Possibly Misprint In Text

Geographic coordinates

Geographic coordinates: -121.62134, 39.84237 (WGS84)
Elevation 750
Relative position 3 MI NORTHWEST OF MAGALIA, 15 MI NORTHEAST OF CHICO

Site location context

Political divisions (FIPS codes)

Butte(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Paradise East(quadrangle 1:24,000 scale)

Chico(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Butte

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 023N 003E 22 California

Comments on the location information

  • MAGALIA DISTRICT IS DIRECTLY NORTH OF BUTTE CREEK DISTRICT. EXACT LOCATION IS UNKNOWN. LOCATION GIVEN IS AT TOWN OF NIMSHEW IN SEC. 22

Commodities

Commodity Importance
Gold Primary
Platinum Critical Secondary

Materials information

Materials Type of material
Gold Ore
Hematite Ore
Magnetite Ore

Analytical data

Result CONCENTRATE YIELDED $107.90/TON AU, $510/TON PT, CONCENTRATION 1 LB/50 TONS GRAVEL. THIS CALCULATES TO APPROX. 18 PPB AU AND 0.6 PPB PT IN RAW GRAVELS

Mineral occurrence model information

Model code 119
USGS model code 39a
Deposit model name Placer Au-PGE
Mark3 model number 54

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel
    Stratigraphic age (youngest) Pliocene

Economic information

Ore body information

  • General form STREAM SEDIMENT DEPOSITS

Controls for ore emplacement

  • Stream Hydraulics And Wave Action

Comments on the geologic information

  • BEDROCK IS SLATE AND GREENSTONE WITH SERPENTINE

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1848

Mining district

District name Magalia District

Land status

Ownership category Private

Comments on the production information

  • GOLD PRODUCTION ESTIMATE IS PROBABLY TOO HIGH (CLARK)

Comments on the workings information

  • WORKINGS FOR NIMSHEW SPECIFICALLY ARE NOT KNOWN, BUT DISTRICT HAS UNDERGROUND AS WELL AS SURFACE WORKINGS

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit SEE ALSO: MRDS M045344.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1974 Blair, Will N. U.S. Geological Survey
Updater 01-FEB-1989 Peterson, Jocelyn A. 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.