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

Chileno

Past Producer in Tuolumne county in California, United States with commodities Gold, Silver
Map
XML
JSON
KML
C
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. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10077921
MRDS ID W026001
Record type Site
Current site name Chileno
Alternate or previous names Chilena
Related records 10263359

Geographic coordinates

Geographic coordinates: -120.47767, 37.99713 (WGS84)
Elevation 488
Relative position NEAR THE SUMMIT OF JACKASS HILL, 3/4 MILE NW OF TUTTLETOWN.

Site location context

Political divisions (FIPS codes)

Tuolumne(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Sonora(quadrangle 1:24,000 scale)

Oakdale(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Stanislaus(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Tuolumne

Public Land Survey System information

Meridian Township Range Section Fraction State
002N 014E 30 California

Commodities

Commodity Importance
Gold Primary
Silver Primary

Comments on the commodity information

  • DISTRIBUTION OF GOLD SOMEWHAT ERRATIC, PORTIONS OF HIGH-GRADE ORE ALTERNATING WITH POORER MATERIAL; TELLURIDE MINERALS REPORTED FROM SOME OF THE HIGH-GRADE POCKETS; SULFIDES ESSENTIALLY ALL PYRITE FORM 15 PERCENT OF ORE.

Materials information

Materials Type of material
Gold Ore
Pyrite Ore
Albite Gangue
Quartz Gangue
Sericite Gangue

Alteration

  • (Local) Metasomatic Alteration Of Schist

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -120.47767, 37.99713
ListMap

Economic information

Ore body information

  • Strike N 40 W
    Dip 68 E
    Thickness 2.74M

Controls for ore emplacement

  • Ore Zone In Intensely Metasomatized Zone 4 To 9 Ft. Thick At 150 Ft. Level.

Comments on the geologic information

  • GEOL.DESC: AMPHIBOLITE SCHIST PREDOMINATELY FINE-GRAINED AND GREENISH. SOME COARSE-GRAINED FACIES ALSO OCCUR, ONE OF WHICH CONTAINS HORNBLENDE PORPHYROBLASTS. ORE ZONE ARCUATE IN PLAN VIEW RANGES IN STRIKE FROM N 25 W TO N 50 W. ORE SHOOT 160 FT. DEVELOPED IN ORE ZONE.

Economic information about the deposit and operations

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

Mining district

District name Mother Lode Belt

Land status

Ownership category Private

Workings at the site

  • Type of workings Underground
    Area 6.475HA

Comments on the workings information

  • INCLINED SHAFT WITH 150 AND 450 FT. LEVELS.

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1978 Albers, J.; Tatkin, T. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

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.