Aurora Mine

Past Producer in San Benito county in California, United States with commodity Mercury
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. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Ownership information
  17. Production statistics
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. Reporter information

Geologic information

Identification information

Deposit ID 10040906
MRDS ID M055791
Record type Site
Current site name Aurora Mine
Alternate or previous names Morning Star
Related records 10139703

Geographic coordinates

Geographic coordinates: -120.67405, 36.39494 (WGS84)
Elevation 1170
Relative position 72 MI SE OF HOLLISTER, 5 MI S OF NEW IDRIA MINE

Site location context

Political divisions (FIPS codes)

San Benito(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Idria(quadrangle 1:24,000 scale)

Coalinga(quadrangle 1:100,000 scale)

Monterey(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Panoche-San Luis Reservoir(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California San Benito

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 018S 012E 05 California

Commodities

Commodity Importance
Mercury Primary

Materials information

Materials Type of material
Cinnabar Ore
Metacinnabar Ore

Alteration

  • (Local) Silica - Carbonate Alteration Of Serpentine

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite
    Rock unit name Franciscan Jur Serpentine And Sandstone;Panoche Upper Cret Sandstone And Shale
    Rock description Franciscan Jur Serpentine And Sandstone;Panoche Upper Cret Sandstone And Shale

Nearby scientific data

(1) -120.67405, 36.39494

Economic information

Geologic structures

Type of structure Regional
Structure description N 70 W Coalinga Anticline, New Idria Thrust
Type of structure Local
Structure description Fault Striking N 45 W

Ore body information

  • General form IRREGULAR
    Strike NW
    Dip SW
    Length 121.92M
    Width 30.48M

Controls for ore emplacement

  • Shear Zones In Serpentine Containing Silica - Carbonate Rock

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1853
Production years 1853 - 1911, 1915, 1917, 1930 - 1943, 1950 - 1961

Mining district

District name New Idria

Ownership information

  • Type Operator
    Owner R. Piaz, J. Carillo
    First year 1952
  • Type Owner
    Owner E. P. Jarrett

Production statistics

  • Year 1962
    Period Thru 1962
    Material HG
    Accuracy Estimate
    Description Cp_Grade: ^5-10 Lb/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Mercury Mercury 3388g/mt

Workings at the site

  • Type of workings Surface/Underground
    Length 487.68M

Comments on the workings information

  • ORE IS IN LARGE IRREGULAR BODIES OF SILICA - CARBONATE ROCK

Reference information

Bibliographic references

  • Deposit

    ECKEL, E. B. AND MYERS W. B., 1946, QUICKSILVER DEPOSITS OF THE NEW IDRIA DISTRICT SAN BENITO AND FRESNO COUNTIES, CALIFORNIA, CALIF. JOUR. OF MINES AND GEOLOGY, V. 42, P. 81 - 124

  • Deposit

    BAILEY, E. H., U.S.G.S., PERSONAL FILES

  • Deposit

    AVERILL, C.V., 1947, MINES AND MINERAL RESOURCES OF SAN BENITO COUNTY, CALIF.: CJMG, V. 43, P. 41-60

  • Deposit

    HOLMES, G.W., JR., 1965, MERCURY IN CALIFORNIA: USBM IC 8252

  • Deposit

    5) BRADLEY, W.W., 1918, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG BULL. 78, 389 P.

  • Deposit

    6) RANSOME, A.L. AND KELLOGG, J.L., 1939, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG, V. 35, P. 353-486

  • Production

    USBM DATA

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1976 Peterson, Jocelyn A. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.