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Cochas Region Lead-Zinc Mine 48

Producer in Junin, Peru with commodities Zinc, Lead, Silver
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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. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Controls for ore emplacement
  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 10068953
MRDS ID W002230
Record type Site
Current site name Cochas Region Lead-Zinc Mine 48

Geographic coordinates

Geographic coordinates: -75.88304, -11.94787 (WGS84)
Elevation 4500
Relative position THE REGION REFERRED TO AS COCHAS COVERS AN EXTENSIVE AREA NORTHWEST, WEST AND SOUTHWEST OF THE VILLAGE OF COCHAS, ABOUT 25 KM SW OF PACHACAYO AND 50 KM SSE OF LA OROYA, IN THE PROVINCIA DE JAUJA. THE REGION IS JUST NORTH OF THE CONTINENTAL DIVIDE. THE AREA MAY BE REACHED FROM PACHACAYO BY ROAD, THE HUAYLACANCHA MINE CAMP OF THE COMPANIA MINERA COCHAS BEING ABOUT 40 KM FROM PACHACAYO.

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

  • NO. 19 ON METALLOGENIC MAPS OF PERU, 1969. THE HUACHOCOLPA DISTRICT IS JUST EAST OF THE CONTINENTAL DIVIDE IN THE HEADWATERS OF THE OPAMAYO, IT MAY BE REACHED BY 20-25 KM OF ROAD FROM PASO DE CHONTA ON THE PISCO-HUANCAVELICA ROAD ABOUT 230 KM NE OF PISCO.
  • NO. 48 ON METALLOGENIC MAPS OF PERU, 1969

Commodities

Commodity Importance
Zinc Critical Primary
Lead Primary
Silver Primary

Comments on the commodity information

  • GANGUE MINERALS ARE PYRITE, LIMESTONE

Materials information

Materials Type of material
Galena Ore
Sphalerite Ore
Limestone Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name See N-70-Significant Local Structures;See N-70-Significant Local Structures;See N-70-Significant Local Structures;See N-70-Significant Local Structures
    Rock description See N-70-Significant Local Structures;See N-70-Significant Local Structures;See N-70-Significant Local Structures;See N-70-Significant Local Structures
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -75.88304, -11.94787
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description See Comments

Ore body information

  • Strike N50-60E, N50-70W
    Dip SE,?
    Length 250M
    Width 0.15M
    Depth to bottom 60M

Controls for ore emplacement

  • See Comments

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Ownership information

  • Type Owner
    Owner Compania Minera Cochas
    First year 1947

Production statistics

  • Year 1955
    Period 1954 - 1955
    Material ZN
    Accuracy Accurate
    Description Cp_Grade: ^5 - 30 % Zn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Zinc Zinc 18wt-pct
  • Year 1955
    Period 1954 - 1955
    Material PB
    Accuracy Accurate
    Description Cp_Grade: ^5 - 15 % Pb
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Lead Lead 10wt-pct
  • Year 1955
    Period 1954 - 1955
    Material AG
    Accuracy Accurate
    Description Cp_Grade: ^100 - 300 G Ag/T
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 200g/mt

Comments on the production information

  • DAILY ORE CAPACITY-120,000 TPD, CONCENTRATOR FEED CAPACITY-330 TPD, EXTRACTION METHOD-FLOTATION. DAILY ORE CAPACITY IN 1982 280 ST/DAY WITH 2.5 OZ/ST AG.
  • PRIOR PRODUCTION IS UNKNOWN BUT BELIEVED TO BE SMALL

Comments on the reserve resource information

  • INSUFFICIENT DATA 3/74 TO MAKE ESTIMATE. METALLOGENIC MAPS OF PERU INDICATE A SMALL DEPOSIT OF LITTLE OR NO ECONOMIC SIGNIFICANCE.
  • INSUFFICIENT DATA 3/74 TO MAKE ESTIMATE. METALLOGENIC MAPS OF PERU INDICATE A DEPOSIT CONTAINING BETWEEN ONE AND 10 MILLION TONS OF ORE. FOR THE DISTRICT-PROBABLY CONSERVATIVE

Comments on development

  • ECON.COM: DAILY ORE CAPACITY: 120000 MET TPD (1976); CONCENTRATOR CAPACITY (1980) 330 T/D

Reference information

Bibliographic references

  • Deposit

    SIMONS, FRANK, 1960, UNPUBLISHED REPORT, P. 1235

  • Deposit

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

  • Deposit

    1960 COMPILE FRANK SIMONS, UNPUB. REP

  • Production

    F. SIMONS, 1960, UNPUB. REP.

  • Reserve-Resource

    METALLOGENIC MAPS OF PERU. 1969, 1972

General comments

Subject category Comment text
Deposit SINUOUS AND IRREGULAR. CAUDALOSA CHICA MINE: ORE AVERAGED 4-5% PB, 0.5-0.7% CU. PESETA MINE: WORKED CONTINUOUSLY SINCE 1925.
Deposit First Production Year: OPENED FOR SIGNIFICANT PRODUCTION 1959
Deposit Discovery Year: DURING COLONIAL PERIOD

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1973 Shaffer, Glenn L. U.S. Geological Survey

Beyond USGS

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

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