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  3. Mineral Resource Data System (MRDS)

Portezuelo

Past Producer in Chile with commodity Copper
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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. Economic information about the deposit and operations
  12. Mining district
  13. Reserves and resources
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10057632
MRDS ID TC03249
Record type Site
Current site name Portezuelo

Geographic coordinates

Geographic coordinates: -70.34455, -23.70252 (WGS84)
Elevation 900

Site location context

Political divisions (FIPS codes)

Chile(country)

South America(continent)

Land(continent)

Geographic areas

Country
Chile

Comments on the location information

  • FRUTOS & PINCHEIRA (1986) LOCATION AT 23-42-36S AND 070-20-24W.

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Chalcocite Ore
Chrysocolla Ore
Cuprite Ore
Malachite Ore
Calcite Gangue

Alteration

  • (Local) Propylitic

Host and associated rocks

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

Nearby scientific data

(1) -70.34455, -23.70252
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Economic information

Ore body information

  • General form LENTICULAR
    Strike N35E; N10W
    Dip 60E; 90
    Length 100M
    Width 10M
  • General form LENTICULAR
    Strike N35E; N10W
    Dip 60E; 90

Economic information about the deposit and operations

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

Mining district

District name Sierra Del Ancla

Reserves and resources

  • Type In-situ
    Estimate year 1974
    Total resources 156000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 2 wt-pct Copper Major 1974

Comments on the reserve resource information

  • MUCH OF THE RESERVES HAVE BEEN EXPLOITED BY SOCIEDAD MINERA PORTEZUELO AND PIRQUINEROS.

Workings at the site

  • Type of workings Surface
    Area 200HA
    Overall depth 45M

Reference information

Bibliographic references

  • Deposit

    FRUTOS, J. AND PINCHEIRA, M., 1986, FICHAS METALOGENICAS DE YACIMEINTOS MINERALES METALICOS CHILENOS, IN FRUTOS, J., OYARZUN, J., AND PINCHEIRA, M., EDS., GEOLOGIA Y RECURSOS MINERALES CHILENOS: UNIVERSIDAD DE CONCEPCION, CONCEPCION, P. 841-888.

  • Deposit

    RUIZ, C. AND PEEBLES, F., 1988, YACIMIENTOS METALIFEROS DE CHILE: SANTIAGO, 334 P.

  • Deposit

    BORIC, R., DIAZ, F., AND MAKSAEV, V., 1984, COMPLEMENTO MAPA METALOGENICO, II REGION: GERENCIA DE DESAROLLO, SANTIAGO, (12 VOLS.).

  • Deposit

    SERMINAS, 1974, INVENTARIO Y EVALUACION RECURSOS MINERALES DE CHILE.

  • Other Database

    CIMRI

  • Reserve-Resource

    SERMINAS, 1974.

General comments

Subject category Comment text
Deposit TWO LENSES TRENDING N40E, 54SE AND N30W, 50-60SW WITH MINERALIZATION AS DISSEMINATIONS IN FRACTURES <20,000T CU

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1989 Williams, William C. University of Arizona

Beyond USGS

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

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