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  3. Mineral Resource Data System (MRDS)

Ayer

Occurrence in Yuba county in California, United States with commodity Copper
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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. Land status
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10095264
MRDS ID M021078
Record type Site
Current site name Ayer
Related records 10238944

Geographic coordinates

Geographic coordinates: -121.37965, 39.1996 (WGS84)
Elevation 91
Relative position 4 MILES WEST OF SMARTSVILLE

Site location context

Political divisions (FIPS codes)

Yuba(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Browns Valley(quadrangle 1:24,000 scale)

Yuba City(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 Yuba

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 016N 005E 35 California

Commodities

Commodity Importance
Copper Tertiary

Materials information

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

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate

Nearby scientific data

(1) -121.37965, 39.1996
ListMap

Economic information

Ore body information

  • Strike N 40 W
    Dip NEAR VERTICAL
    Thickness 0.91M

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Land status

Ownership category Military Reservation

Workings at the site

  • Type of workings Underground
    Length 9.14M

Comments on the workings information

  • SHAFT 30 FT

Reference information

Bibliographic references

  • Deposit

    ERIC, J.H., 1948 : COPPER IN CALIFORNIA BULL. 144 : DIV. OF MINES, P. 357

  • Deposit

    WARING, C.A., 1919 : YUBA COUNTY: 15 TH REPT. STATE MIN.; CALIF. MIN. BUR., P. 424 - 425

General comments

Subject category Comment text
Deposit CUPPED BY GOSSAN

Reporter information

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

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.