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Calpa and Cordova Gold Copper Mine 69-79

Producer in Arequipa, Peru with commodities Gold, Silver, 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. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Production statistics
  16. Reserves and resources
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10068877
MRDS ID W002149
Record type Site
Current site name Calpa and Cordova Gold Copper Mine 69-79

Geographic coordinates

Geographic coordinates: -73.47465, -15.8144 (WGS84)
Elevation 2700
Relative position JUST EAST OF THE RIO ATICO, 18 KM WSW OF CARAVELI IN THE PROVINCIA DE CARAVELI.

Site location context

Political divisions (FIPS codes)

Arequipa(province)

Peru(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Peru Arequipa

Comments on the location information

  • NO. 69 ON METALLOGENIC MAP OF PERU, 1969 SHOWN AS COPPER MINE, NO. 70 SHOWN AS GOLD. MAY BE REACHED FROM ATICO, ON THE PANAMERICAN HIGHWAY, OVER ABOUT 60 KM OF ALL-WEATHER ROAD. CORDOVA (70) IS ABOUT 2 KM E. OF CALPA.

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Primary

Materials information

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

Alteration

  • (Local) Wallrock Is Propylitized, Kaolinized, And Pyritized. Grade Of Ore Seems To Be Independent Of Wall Rock, As Similar Grades Are Found In All The Facies Cut By The Vein

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic)
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -73.47465, -15.8144
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description See Comments

Ore body information

  • Strike N65W; E
    Dip STEEP NE; STEEP N
    Length 1500M
    Width 0.4M
    Depth to bottom 250M
  • Strike N65W; E
    Dip STEEP NE; STEEP N

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1677
Year of first production 1939

Mining district

District name Atico

Ownership information

  • Type Operator
    Owner Consorcio Minero Del Peru )
    First year 1943

Production statistics

  • Year 1955
    Period 1948 - 1955
    Material CU
    Accuracy Accurate
    Description Cp_Grade: ^1 - 2 % Cu, Relatively Abundant Only In Hilo 375 - Mina Vieja Veins. Elsewhere Copper Is Scarce
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Copper Copper 2wt-pct
  • Year 1955
    Period 1939 - 1955
    Material AG
    Accuracy Accurate
    Description Cp_Grade: ^6 - 13 G Ag/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Silver Silver 10g/mt
  • Year 1955
    Period 1939 - 1955
    Material AU
    Accuracy Accurate
    Description Cp_Grade: ^6 - 12 G Au/Ton, Except In Norte 2 Vein, Where Gold Content Is 15 - 25 G Au/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Gold Gold 9g/mt

Comments on the production information

  • ORE AMOUNT BASED ON GOLD CONTENT OF 10 G/TON AU. PRODUCTION FOR COMPANIA MINERA CALPA S.A.

Reserves and resources

  • Type In-situ
    Estimate year 1974
    Total resources 49000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.036 wt-pct Copper Major 1974

Comments on the reserve resource information

  • INSUFFICIENT DATA 3/74 TO MAKE ESTIMATE. METALLOGENIC MAPS OF PERU INDICATE A DEPOSIT CONTAINING BETWEEN 100,000 AND ONE MILLION TONS OF ORE.

Comments on development

  • CONSORCIO MINERO DEL PERU FORMED FROM AURIFERA NAZCA S.A., AURIFERA LOS INCAS S.A., AURIFERA CANAVELI, S.A. AND AURIFERA CHALA S.A.

Reference information

Bibliographic references

  • Deposit

    SIMONS, FRANK, 1960, UNPUBLISHED REPORT, P. 353

  • Deposit

    PERU-MAPA METALOGENETICO, 1969, AND, GUIA PARA EL MAPA METALOGENETICO DEL PERU, SOCIEDAD NACIONAL DE MINERIA Y PETROLEO, LIMA, PERU, NOV. 1969

  • Deposit

    BOZA, ENRIQUE, 1948, UNPUB. THESIS, MINAS CALPA, MINING ENGINEER THESIS NO. 979, ESCUELA NACIONAL DE INGENIERA.

  • Deposit

    BROGGI, JORGE A, 1940, MEMORIA DE LA EXCURSION REALIZADA A LA ZONA SUR DE LA COSTA CON LOS ALUMNOS DEL 5 DEG ANO DE MINAS: BOL. MINAS, IND. Y CONSTR., SER. 3, V. 13, P. 13-24

  • Deposit

    U.S. EMBASSY LIMA, 1993, 1992 INDUSTRIAL OUTLOOK REPORT ON MINERALS PERU: U.S. DEPARTMENT OF STATE , 7/93.

  • Deposit

    ALARCON, G. J., 1974; INFORME PRELIMINAR UNIDAD MINERA "CALPA Y OTRAS": BANCO MINERO DEL PERU, NOV, COD.B2064.

  • Deposit

    GARCIA, S. A., 1950; INFORME SOBRE EL ESTADO ACTUAL DE LAS MINAS DE CALPA Y SAN JUAN DE LUCANAS CONSORCIO MINERO DEL PERU: BANCO MINERO DEL PERU. COD.B4607.

  • Deposit

    1960 COMPILE FRANK SIMONS, UNPUB. REP

  • Production

    F SIMONS, 1960, UNPUB. REP.; ANNUAL PRODUCTION FROM U.S. EMBASSY LIMA (1993).

  • Reserve-Resource

    METALLOGENIC MAPS OF PERU. (1969, 1972). ALARCRON (1974)

General comments

Subject category Comment text
Deposit First Production Year: 1939; 1933-39 EXPLORATION ADIT DRIVEN BY CERRO DE PASCO COPPER CORP.
Deposit SHOOTS WITH DIMENSIONS: LENGTH 400 M, WIDTH AVERAGE 100 CM. THE CORDOVA GOLD PROSPECT, SHOWN AS NO. 70 ON METALLOGENIC MAPS OF PERU, IS 8 KM. SW OF CARAVELI, 1/2 KM EAST OF CALPA. A NUMBER OF VEINS 40 TO 100 METERS LONG AND AS MUCH AS 70 CM WIDE THAT STRIKE N 20-80 E AND DIP ABOUT 70 DEG NW, HAVE BEEN EXPLORED. THEY CONTAIN FROM A FEW GRAMS TO ABOUT 15 GRAMS OF GOLD PER TON. ROCKS OF AREA ARE GRANODIORITE OF THE COASTAL BATHOLITH OVERLAIN BY VOLCANIC ROCKS, MAINLY RHYOLITE. VEINS RANGE IN WIDTH FROM A FEW CENTIMETERS TO 2 METERS, AVERAGING SOMEWHAT MORE THAN 1 M. QUARTZ IS USUALLY MASSIVE AND MODERATELY COARSE GRAINED, AND MAY BE EITHER CLEAR OR MILKY; RARELY IT SHOWS BANDING OR COMB STRUCTURE. PYRITE OCCURS AS ISOLATED CRYSTALS AND IN VEINLETS, LENSES, AND IRREGULAR POCKETS. GOLD FORMS WORMLIKE MASSES THAT REACH A MAXIMUM SIZE OF 5 MM; IT IS MAINLY ELECTRUM WITH AS MUCH AS 60% SILVER.
Deposit SEE RECORD NUMBER ARE0003.
Deposit Discovery Year: COLONIAL PERIOD?

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1973 Shaffer, Glenn L. U.S. Geological Survey
Updater 01-DEC-1993 Page, Norman J. U.S. Geological Survey
Updater 01-JUN-1994 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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