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  3. Mineral Resource Data System (MRDS)

San Geronimo

Occurrence in Marin county in California, United States with commodity Gold
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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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Links to other databases
  10. Bibliographic references
  11. General comments
  12. Reporter information

Geologic information

Identification information

Deposit ID 10092343
MRDS ID M009212
Record type Site
Current site name San Geronimo
Related records 10163857

Geographic coordinates

Geographic coordinates: -122.65745, 38.01878 (WGS84)
Elevation 110
Relative position AT SAN GERONIMO IN SW1/4 SEC.

Site location context

Political divisions (FIPS codes)

Marin(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

San Geronimo(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 002N 007W 17 California

Commodities

Commodity Importance
Gold Primary

Nearby scientific data

(1) -122.65745, 38.01878
ListMap

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Comments on the production information

  • SHAFT SUNK IN SILICA-CARBONATE ROCKS IN 1870'S AND IT WAS REPORTED THAT ORE AVERAGED $30 TO $40 PER TON IN GOLD AND CONTAINED IN ADDITION SILVER, IRON, MANGANESE, ANTIMONY, AND TRACES OF NICKEL. THERE IS NO RECORD OF PRODUCTION.

Comments on the workings information

  • A 200-FT. SHAFT.

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOL. V. 51, NO. 3, JULY 1955, P. 268-9, 280, PL.

General comments

Subject category Comment text
Deposit SHAFT IS 200 YDS NORTH OF SIR FRANCIS DRAKE HIGHWAY AND 0.3 MI. WEST OF THE SAN GERONIMO -NICASIO ROAD. IT HAS BEEN FILLED IN AS A SAFETY PRECAUTION.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. 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.