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  3. Mineral Resource Data System (MRDS)

Edwards

Producer in Marin 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. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Production statistics
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10040861
MRDS ID M055736
Record type Site
Current site name Edwards
Alternate or previous names Bently Ranch, Chileno Valley, Panco No. 1
Related records 10211999

Geographic coordinates

Geographic coordinates: -122.79996, 38.191 (WGS84)
Relative position 12.5 MI SW OF PETALUMA

Site location context

Political divisions (FIPS codes)

Marin(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Point Reyes NE(quadrangle 1:24,000 scale)

Napa(quadrangle 1:100,000 scale)

Santa Rosa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Tomales-Drake Bays(hydrologic unit)

San Francisco Bay(hydrologic accounting unit)

San Francisco Bay(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Marin

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 004N 009W 13 California

Comments on the location information

  • LOCATED TO APPROX. CENTER OF SECTION

Commodities

Commodity Importance
Mercury Primary

Materials information

Materials Type of material
Cinnabar Ore
Marcasite Gangue
Pyrite Gangue

Alteration

  • (Local) Hydrothermal Alteration

Host and associated rocks

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

Nearby scientific data

(1) -122.79996, 38.191
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Local Faults And Shears

Controls for ore emplacement

  • Shear Breccia Zones

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1955
Year of first production 1955

Mining district

District name Petaluma

Ownership information

  • Type Owner
    Owner Ray Schultz And Mr. Bentley

Production statistics

  • Year 1962
    Period To 1962
    Material HG
    Accuracy Estimate
    Description Cp_Grade: ^10 Lb/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Mercury Mercury 4518g/mt

Comments on development

  • MINERALIZED ZONES SMALL AND DISCONTINUOUS

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

    BAILEY, E.H., USGS, PERSONAL FILES

  • 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.