Sebastopol

Past Producer in Chile with commodities Gold, Copper
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Production statistics
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10058078
MRDS ID TC03835
Record type Site
Current site name Sebastopol

Geographic coordinates

Geographic coordinates: -69.96119, -26.81776 (WGS84)
Elevation 2000

Site location context

Political divisions (FIPS codes)

Chile(country)

South America(continent)

Land(continent)

Geographic areas

Country
Chile

Commodities

Commodity Importance
Gold Primary
Copper Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Pyrite Ore
Calcite Gangue
Quartz Gangue

Alteration

  • (Local) Argillic, Silicic

Analytical data

Result 20-40 G/T AU
Result 5-10 G/T AU IN PRIMARY ZONE.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Bandurrias Formation
    Rock description Bandurrias Formation
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -69.96119, -26.81776

Economic information

Ore body information

  • General form LENTICULAR
    Strike N30-42E
    Dip 80NW-90
    Length 180M
    Width 1M

Controls for ore emplacement

  • Deposit Faulted Off

Comments on the geologic information

  • NEAR CONTACT WITH GRANODIORITE

Economic information about the deposit and operations

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

Mining district

District name Inca De Oro

Production statistics

  • Year 1940
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^30.1 G/T Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 30g/mt
  • Year 1971
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^52.8 G/T Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 53g/mt

Workings at the site

  • Type of workings Underground
    Overall depth 120M

Comments on the workings information

  • 7 LEVELS

Reference information

Bibliographic references

  • Deposit

    RUIZ, C. Y PEEBLES, F., 1988, YACIMIENTOS METALIFEROS DE CHILE; SANTIAGO, 334 P.

  • Deposit

    FLORES, H. Y RUIZ, C., 1946, ESTUDIO GEOLOGICO DEL DISTRITO DE INCA DE ORO, PROVINCIA ATACAMA: IPIMIGEO 2, 2, P. 243-273.

  • Deposit

    CAMUS, F. Y DUHALDE, M.A., 1982, GEOLOGIA DE LOS YACIMIENTOS HIDROTERMALES DE ORO EN CHILE: REV. GEOL. DE CHILE, 17, P. 47-70.

  • Deposit

    DIAZ, ET AL., 1980, MAPA METALOGENICO PRONOSTICO DE LA III REGION: CORPORACION DE FOMENTO DE LA PRODUCCION, SANTIAGO (5 VOLS.).

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit VERTICAL ZONATION OF, FROM SURFACE, QTZ-PY-AU TO CP-PY-QTZ TO PY-QTZ-CAL

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1990 Williams, William C. University of Arizona

Beyond USGS

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