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  3. Mineral Resource Data System (MRDS)

Polar Star

Past Producer in San Luis Obispo county in California, United States with commodity Mercury
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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. Alteration
  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. Ownership information
  16. Production statistics
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10040902
MRDS ID M055786
Record type Site
Current site name Polar Star
Alternate or previous names Santa Clara, Black Hawk
Related records 10286696

Geographic coordinates

Geographic coordinates: -121.27127, 35.74273 (WGS84)
Elevation 152
Relative position 13.5 MI N OF SAN SIMEON

Site location context

Political divisions (FIPS codes)

San Luis Obispo(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Piedras Blancas(quadrangle 1:24,000 scale)

Cambria(quadrangle 1:100,000 scale)

San Luis Obispo(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Central Coastal(hydrologic unit)

Central California Coastal(hydrologic accounting unit)

Central California Coastal(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California San Luis Obispo

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 025S 006E 13 California

Comments on the location information

  • NO UTM COORDINATES ON MAP

Commodities

Commodity Importance
Mercury Primary

Materials information

Materials Type of material
Cinnabar Ore

Alteration

  • (Local) Silica Carbonate Alteration Of Serpentine

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock
    Stratigraphic age (youngest) Late Jurassic

Nearby scientific data

(1) -121.27127, 35.74273
ListMap

Economic information

Ore body information

  • General form PODS
    Width 9.14M

Controls for ore emplacement

  • Breccia Zone

Comments on the geologic information

  • GEOL.DESC: MOST HG ACTUALLY RECOVERED FROM FLOAT OR SURFACE ORE

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1870
Production years 1904, 1935 - 1937, 1940 - 1944, 1946

Mining district

District name San Carpoforo

Ownership information

  • Type Owner
    Owner Kenneth Emigh

Production statistics

  • Year 1962
    Period To 1962
    Material HG
    Accuracy Estimate
    Description Cp_Grade: ^4-10 Lb/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Mercury Mercury 3162g/mt

Comments on the reserve resource information

  • NO RESERVES INFERRED

Workings at the site

  • Type of workings Surface/Underground
    Length 15.24M
    Overall depth 45.72M

Comments on the workings information

  • WORKINGS MOSTLY CAVED

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

    BAILEY, E. H., USGS, PERSONAL FILES

  • Deposit

    ECKEL, E. B., YATES, R. G., AND GRANGER, A. E., 1940, QUICKSILVER DEPOSITS IN SAN LUIS OBISPO COUNTY AND SOUTHWESTERN MONTEREY COUNTY CALIFORNIA: USGS BULL. 922-R, P. 515 - 580

  • Deposit

    FRANKE, H. A., 1935, MINES AND MINERAL RESOURCES OF SAN LOUIS OBISPO COUNTY, CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 31, P. 434 - 455

  • 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.

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.