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

New Almaden - Harry Area

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. Production statistics
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10040744
MRDS ID M055607
Record type Site
Current site name New Almaden - Harry Area

Geographic coordinates

Geographic coordinates: -121.84047, 37.17714 (WGS84)
Elevation 427

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 009S 001E 02 California

Comments on the location information

  • E SLOPE OF MINE HILL

Commodities

Commodity Importance
Mercury Primary

Materials information

Materials Type of material
Cinnabar Ore
Mercury Ore
Dolomite Gangue

Alteration

  • (Local) Silica Carbonate Alteration

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) -121.84047, 37.17714
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Serpentine - Greenstone Contact

Ore body information

  • Strike N
    Dip 35 E
    Thickness 4.57M
    Length 243.84M
    Width 13.72M

Controls for ore emplacement

  • Serpentine Contact, "Hilos"

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1893

Mining district

District name New Almaden

Production statistics

  • Year 1905
    Period 1893-1905
    Material HG
    Accuracy Accurate
    Description Cp_Grade: ^0.6% Hg
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Mercury Mercury 1wt-pct

Comments on the production information

  • CONSIDERED NOW AS PART OF NEW ALMADEN MINE

Workings at the site

  • Type of workings Surface/Underground
    Length 3962.4M

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.