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Patriquin Mine

Past Producer in Monterey 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. Geologic structures
  12. Ore body information
  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. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10040637
MRDS ID M055489
Record type Site
Current site name Patriquin Mine
Alternate or previous names Pitts, Cholame - Parkfield, Parkfield, Franciscan, Paloma Mining Co.
Related records 10286021

Geographic coordinates

Geographic coordinates: -120.42236, 35.95996 (WGS84)
Elevation 853
Relative position 4 MI N OF PARKFIELD

Site location context

Political divisions (FIPS codes)

Monterey(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Parkfield(quadrangle 1:24,000 scale)

Paso Robles(quadrangle 1:100,000 scale)

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

Hydrologic units (watersheds)

Estrella(hydrologic unit)

Central California Coastal(hydrologic accounting unit)

Central California Coastal(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Monterey

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 023S 014E 02 California

Comments on the location information

  • NE/4 SEC. 2. SOUTH SLOPE OF MINE MOUNTAIN.

Commodities

Commodity Importance
Mercury Primary

Materials information

Materials Type of material
Cinnabar Ore
Barite Gangue
Chalcedony Gangue
Metacinnabar Gangue
Opal Gangue
Pyrite Gangue
Quartz Gangue
Sulfur Gangue

Alteration

  • (Local) Silica - Carbonate From Serpentine

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate
    Rock unit name Franciscan Formation Jur Serpentine And Carbonate Rock
    Rock description Franciscan Formation Jur Serpentine And Carbonate Rock

Nearby scientific data

(1) -120.42236, 35.95996
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description San Andreas Fault
Type of structure Local
Structure description Ne - Dipping Thrust Fault , Intersecting Faults

Ore body information

  • General form IRREGULAR

Comments on the geologic information

  • SERPENTINE FORMS UPPER PLATE. { PIERCEMENTS OF ROCKS OF THE FRANCISCAN GROUP. CRETACEOUS SEDIMENTS AND MINOR AMOUNTS OF ROCKS OF MIOCENE AGE INTO ANTICLINE FORMED BY FOLDING A THICK SEQUENCE OF CRET. SEDIMENTS. PIERCEMENT LATER INTRUDED BY SERPENTINE IN POST - MIOCENE TIME.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1873
Discoverer H. F. Pitts And Others
Year of first production 1873
Production years 1873, 1908, 1915-1918, 1920, 1922-1925, 1927, 1930-1932, 1934-1939, 1943-1944

Mining district

District name Parkfield (Patriquin Area)

Ownership information

  • Type Operator
    Owner Ray Hackney And Fred Kreider
    First year 1961
  • Type Owner
    Owner Fred Harker
    First year 1960

Production statistics

  • Year 1962
    Period To 1962
    Material HG
    Accuracy Estimate
    Description Cp_Grade: ^8 Lb/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Mercury Mercury 3614g/mt

Comments on the production information

  • 45 LB/FT OF WORKINGS. PRODUCED SMALL AMOUNTS (LESS THAN 100 FL/YR) AT LEAST THROUGH 1965

Comments on the reserve resource information

  • "VERY LITTLE ORE IS BELIEVED TO REMAIN IN THE MINE"

Workings at the site

  • Type of workings Surface/Underground
    Area 0.57HA
    Length 944.88M
    Overall depth 91.44M

Comments on the workings information

  • UNDERGROUND WORKINGS CAVED (1959); GLORY HOLE BENCHED HAPHAZARDLY (1960)

Comments on development

  • ECON.COM: UNFAVORABLE STEEP FAULT; POSSIBLY WORKED OUT

Reference information

Bibliographic references

  • Deposit

    HART, E. W., 1966, MINES AND MINERAL RESOURCES OF MONTEREY COUNTY, CALIFORNIA: CDMG COUNTY REPORT 6

  • Deposit

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

  • Deposit

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

  • Production

    BAILEY, USBM MINERALS YEARBOOKS

  • Reserve-Resource

    BAILEY, 1942

General comments

Subject category Comment text
Deposit ONLY SIGNIFICANT MINE IN COUNTY. SOME FREE SULFUR AND METACINNABAR FOUND IN EARLY DAYS OF MINING ACTIVITY ; INFO.SRC : BAILEY E H

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1975 Gassaway, J. S. U.S. Geological Survey

Beyond USGS

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

External references

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.