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San Pedro, Cachiyuyo Cu Mine

Past Producer in Chile with commodities Copper, Silver, Gold
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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. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  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 10068742
MRDS ID W001982
Record type Site
Current site name San Pedro, Cachiyuyo Cu Mine
Alternate or previous names San Pedro De Cachiyuyo

Geographic coordinates

Geographic coordinates: -69.84285, -26.73915 (WGS84)
Elevation 2055
Relative position ABOUT 125 KM NE. OF COPIAPO

Site location context

Political divisions (FIPS codes)

Chile(country)

South America(continent)

Land(continent)

Geographic areas

Country
Chile

Commodities

Commodity Importance
Copper Primary
Silver Secondary
Gold Secondary

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Pyrite Ore
Calcite Gangue
Quartz Gangue
Scapolite Gangue
Tourmaline Gangue

Alteration

  • (Local) Hydrothermal Alteration (Epidotization Sericitization And Albitization)

Analytical data

Result 3.3% CU
Result 50 G/T AG
Result 1 G/T AU

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Porfiritica Formation;
    Rock description Porfiritica Formation;
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone
    Rock unit name Caliza (Limestone) Formation;
    Rock description Caliza (Limestone) Formation;
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -69.84285, -26.73915
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Reg.Struct: North-Trending Broad Open Folds, Faults Of Varying Lengths And Displacements, And Plutonic Masses
Type of structure Local
Structure description System Of Fractures And Fault-Controlled Diorite Dikes Striking N. 30 Deg. W.

Ore body information

  • General form LENTICULAR TO CIRCULAR
    Length 100M
    Width 35M
    Depth to bottom 200M

Controls for ore emplacement

  • Breccia Pipe Associated With Andean Diorite Intrusive. Fractures Trending N. 70 Deg. W. Which Were Favorable For Mineralization

Comments on the geologic information

  • GEOL.COM: DIFFERENT UNITS MAPPED AND DESCRIBED UNDER THE NAME DIORITA ANDINA ARE: GABBRO AND DIORITE, PORPHYRITIC DIORITE, TONALITE PORPHYRY, GRANODIORITE AND DIORITE AND APLITE

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1850

Mining district

District name Inca De Oro, Sierra San Pedro De Cachiyuyo

Comments on the production information

  • IN 18TH CENTURY WAS A GOLD PRODUCER.

Comments on the reserve resource information

  • FROM 20,000 TO 200,000 TONS OF FINE CU

Workings at the site

  • Type of workings Underground
    Overall depth 210M

Comments on the workings information

  • ACTIVITY FROM ERAZO REF.

Reference information

Bibliographic references

  • Deposit

    RUIZ, F., CARLOS, 1965, GEOLOGIA Y YACIMIENTOS METALIFEROS DE CHILE: INST. INV. GEOL. CHILE, 305 P. (SPANISH)

  • Deposit

    RUIZ, F., CARLOS AND ERICKSEN, G. E., 1962, METALLOGENETIC PROVINCES OF CHILE, S. A.: ECON. GEOL. V. 57, NO. 1, P. 91-106

  • Deposit

    ERAZO, V., MARCO, 1948, ESTUDIO GEOLOGICO DEL DISTRITO MINERO DE SAN PEDRO DE CACHIYUYO, INCA DE ORO: REV. MINERALES, NO. 26, P. 127-137 (SPANISH)

  • Deposit

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

  • Deposit

    ERAZO, M, 1948, ESTUDIO GEOLOGICO DEL DISTRITO MINERO SAN PEDRO DE CACHIYUYO: REV. MIN., #26.

  • Deposit

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

  • Deposit

    FRUTOS, J. AND PINCHEIRA, M., 1986, FICHAS METALOGENICAS DE YACIMIENTOS 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

    CUADRA, W.A., AND DUNKERLEY, P.M., 1991, A HISTORY OF GOLD IN CHILE: ECONOMIC GEOLOGY, V. 86, NO. 6, P. 1155-1173.

  • Deposit

    ERAZO, V., MARCO, 1948, ESTUDIO GEOLOGICO DEL DISTRITO DE SAN PEDRO DE CACHIYUYO, INCA DE ORO: REV. MINERALES, NO. 26, P. 127-137 (SPANISH).

  • Deposit

    1948 COMPILE INSTITUTO DE INGENIEROS DE MINAS DE CHIL

  • Other Database

    CIMRI

  • Production

    CUADRA AND DUNKERLY (1991)

General comments

Subject category Comment text
Deposit Discovery Year: 18TH CENTURY
Deposit ELONGATE EW

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1973 Davidson, Claire B. U.S. Geological Survey
Updater 01-SEP-1990 Williams, William C. University of Arizona
Updater 01-NOV-1993 Page, Norman J. U.S. Geological Survey

Beyond USGS

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

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