1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

New Almaden - North Randol

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. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10040747
MRDS ID M055611
Record type Site
Current site name New Almaden - North Randol

Geographic coordinates

Geographic coordinates: -121.84325, 37.18492 (WGS84)
Elevation 305

Site location context

Political divisions (FIPS codes)

Santa Clara(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Santa Teresa Hills(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 35 California

Comments on the location information

  • NORTH OF VICTORIA SHAFT LOCATED ON RANDOL TUNNEL

Commodities

Commodity Importance
Mercury Primary

Materials information

Materials Type of material
Cinnabar Ore
Mercury Ore
Calcite Gangue

Alteration

  • (Local) Silica Carbonate Alteration Of Serpentine

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite
    Rock unit name Franciscan Complex
    Rock description Franciscan Complex
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -121.84325, 37.18492
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Serpentine - Sediment Contact

Ore body information

  • General form IRREGULAR
    Strike E
    Dip 50 N
    Thickness 7.62M
    Length 396.24M
    Width 60.96M

Controls for ore emplacement

  • Local Fractures Trending N

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1871
Production years 1871 - 1896

Mining district

District name New Almaden

Comments on the production information

  • CONSIDERED AS PART OF THE NEW ALMADEN MINE

Workings at the site

  • Type of workings Underground
    Length 8046.5M

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.