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  3. Mineral Resource Data System (MRDS)

San Mateo

Past Producer in Santa Clara 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. Production statistics
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10040754
MRDS ID M055620
Record type Site
Current site name San Mateo
Related records 10140596

Geographic coordinates

Geographic coordinates: -121.87686, 37.19964 (WGS84)
Elevation 213

Site location context

Political divisions (FIPS codes)

Santa Clara(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Los Gatos(quadrangle 1:24,000 scale)

San Jose(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Coyote(hydrologic unit)

San Francisco Bay(hydrologic accounting unit)

San Francisco Bay(hydrologic subregion)

California(hydrologic region)

Federal lands

LG(Federal land areas administered by LG)

Geographic areas

Country State County
United States California Santa Clara

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 008S 001E 33 California

Comments on the location information

  • JUST BELOW GUADELUPE DAM

Commodities

Commodity Importance
Mercury Primary

Materials information

Materials Type of material
Cinnabar Ore
Dolomite Gangue
Pyrite Gangue

Alteration

  • (Local) Silicification And Argillization Along Faults

Host and associated rocks

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

Nearby scientific data

(1) -121.87686, 37.19964
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Faults Striking N 55 W

Controls for ore emplacement

  • Locally Extensive Shearing, Nw Trending Faults

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1860
Production years 1860 - 1870, 1899 - 1901, 1915 - 1917, 1935 - 1940

Mining district

District name New Almaden

Production statistics

  • Year 1940
    Period To 1940
    Material HG
    Accuracy Estimate
    Description Cp_Grade: ^1% Hg
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Mercury Mercury 1wt-pct

Comments on the production information

  • ONE OF THE "OUTSIDE" NEW ALMADEN MINES

Reference information

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.