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Carahuacra Mine

Producer in Junin, Peru with commodities Zinc, Silver, Lead, 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. Ownership information
  14. Production statistics
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10065241
MRDS ID TC40349
Record type Site
Current site name Carahuacra Mine
Alternate or previous names Ore Zones: Principal, Viejecita, Huaripampa Open Pit
Related records 10231466

Geographic coordinates

Geographic coordinates: -76.09389, -11.6751 (WGS84)
Elevation 4400
Relative position 170 KM EAST OF LIMA.

Site location context

Political divisions (FIPS codes)

Junin(province)

Peru(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Peru Junin

Comments on the location information

  • EAST OF CONTINENTAL DIVIDE, ON CENTRAL HIGHWAY, IN CHUMPE RANGE.

Commodities

Commodity Importance
Zinc Critical Primary
Silver Primary
Lead Primary
Copper Secondary

Materials information

Materials Type of material
Argentite Ore
Chalcopyrite Ore
Galena Ore
Hematite Ore
Jamesonite Ore
Marcasite Ore
Pyrite Ore
Silver Ore
Sphalerite Ore
Stibnite Ore
Tetrahedrite Ore
Barite Gangue
Dolomite Gangue
Gypsum Gangue
Magnetite Gangue
Quartz Gangue
Rhodochrosite Gangue
Siderite Gangue

Alteration

  • (Local) Dolomitization With Minimum Width Of 11 M.

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Phyllite
  • Host or associated Associated
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Associated
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale > Black Shale
    Rock unit name Excelsior Shale;Mitu Formation;Catalina Volcanics;Goyllarisquisga Formation;Machay Formation;Carahuacra Intrusive
    Rock description Excelsior Shale;Mitu Formation;Catalina Volcanics;Goyllarisquisga Formation;Machay Formation;Carahuacra Intrusive
  • Host or associated Associated
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
  • Host or associated Associated
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Arkose
  • Host or associated Associated
    Rock type Sedimentary Rock > Carbonate > Limestone
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Pucara Formation
    Rock description Pucara Formation

Nearby scientific data

(1) -76.09389, -11.6751
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Yauli Anticline With N33-40w Axis (Tertiary) And Pre-Tertiary Folding In Excelsior Shale. Chumpe Anticline Is The Principle Structure In The Area With A Northwest Trend. It Is Superimposed On The South Part Of The Yauli Dome.

Ore body information

  • Name BRECCIA ZONE (PRINCIPAL AND VIEJECITA ORE ZONE), REPLACEMENT
    General form IRREGULAR
    Strike N40W}}N60-85E
    Dip 50SW}}STEEP N
    Plunge 20-35S
    Thickness 45M
    Length 250M
    Width 150M
  • Name MANTO ORES
    General form IRREGULAR
    Strike N40W}}N60-85E
    Dip 50SW}}STEEP N
    Length 200M
  • Name CROSS-VEINS
    General form IRREGULAR
    Dip 50SW}}STEEP N

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1677
Year of first production 1948

Ownership information

  • Type Owner
    Owner Gildemeister Family (19th Century); Volcan Mines Co. )
    First year 1948

Production statistics

  • Year 1955
    Material ORE
    Accuracy Estimate
    Description Ap_Grade: ^About 6.5% Zn, 1.0% Pb, 8 Oz/Ton Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Silver Silver 226g/mt
    Ore Lead Lead 1wt-pct
    Ore Zinc Zinc 7wt-pct
  • Year 1976
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^57.90% Zn (Concentrate)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Zinc Zinc 58wt-pct
  • Year 1976
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^42.39% Pb (Concentrate)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Lead Lead 42wt-pct

Comments on the production information

  • FRANK SIMONS IN UNPUBLISHED REPORT STATE 500 TONS PER DAY MILL TO TREAT ORE FROM CARAHUACRA MINE-PRODUCTION ESTIMATED BE REPORTER 3/73.

Comments on the reserve resource information

  • ESTIMATED BY REPORTER 3/73 TO HAVE POTENTIAL RESOURCES EQUIVALENT TO THE ESTIMATED RESERVES. ESTIMATE MAY BE CONSERVATIVE (1).
  • ESTIMATED BY REPORTER 3/73. ESTIMATE MAY BE CONSERVATIVE (1)
  • ESTIMATED BY REPORTER TO HAVE 10 YEARS RESERVES AT AN ANNUAL PRODUCTION OF ABOUT 180,000 MET TONS (1).

Comments on development

  • IN 1960, 800 TON/DAY MILL 7 KM FROM MINE BEGAN TREATING ORES.

Reference information

Bibliographic references

  • Deposit

    LYONS, W.A., 1968, THE GEOLOGY OF THE CARAHUACRA MINE, PERU: ECONOMIC GEOLOGY, V. 63, NO. 3, P. 247-256.

  • Deposit

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

  • Deposit

    PETERSON, U., 1962, GENESIS OF ORE DEPOSITS IN THE ANDES OF CENTRAL PERU, CERRO DE PASCO CORP., EXPLORATION DIVISION P. 151-155.

  • Deposit

    MINING MAGAZINE, JANUARY, 1987, P. 59.

  • Deposit

    1960 COMPILE FRANK SIMONS-UNPUBLISHED REPOR

  • Other Database

    CIMRI

  • Reserve-Resource

    2)INTERNATIONAL DIRECTORY OF MINING AND MINERAL PROCESSING OPERATIONS, 1977.

General comments

Subject category Comment text
Deposit THE ORE ZONE AT CARAHUACRA CONSISTS OF VARIOUS IRREGULAR ORE SHOOTS. THE MINERALIZED ZONE IS 3 KM LONG AND 20-100 METERS WIDE. ORE IS CHIEFLY IN LOWER PART OF THE PUCARA LIMESTONE. BRECCIA ZONE: RANGES 10-110 M THICK; ALWAYS IN BASAL CONGLOMERATE OF PUCARA FORMATION AND REPRESENT BRECCIATED MANTO ORE BODIES; CONTAINS DRAG FOLDS WITH PLUNGES N30S.
Deposit RECORD W001996 HAS BEEN DELETED AND DATA COMBINED WITH THIS RECORD.
Deposit First Production Year: 1948 SIGNIFICANT
Deposit Discovery Year: COLONIAL TIMES

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1993 Goudarzi, Gus H. (Theune, C. T.) U.S. Geological Survey
Updater 01-MAY-1981 Ericksen, George E. U.S. Geological Survey

Beyond USGS

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

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