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Colquijirca

Plant in Pasco, Peru with commodities Copper, Lead, Silver, Zinc
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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. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mining district
  11. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Production statistics
  15. Reserves and resources
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10207337
MRDS ID W002004
MAS/MILS ID 3330350007
Record type Site
Current site name Colquijirca
Alternate or previous names El Brocal
Related records 10068759

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -76.19972, -10.79791 (WGS84)
Elevation 4500

Site location context

Political divisions (FIPS codes)

Pasco(province)

Peru(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Peru Pasco

Commodities

Commodity Importance
Copper Tertiary
Lead Primary
Silver Primary
Zinc Critical Primary

Materials information

Materials Type of material
Barite Unknown
Chalcopyrite Unknown
Enargite Unknown
Galena Unknown
Marcasite Unknown
Pyrite Unknown
Quartz Unknown
Sphalerite Unknown
Stromeyerite Unknown
Tennantite Unknown

Nearby scientific data

Ore Body (1) -76.19972, -10.79791
ListMap

Economic information

Ore body information

  • Thickness 5M
    Area 50HA
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 TABULAR
    Shape of Orebody #2 MASSIVE
    Primary mode of Origin METAMORPHISM
    Secondary mode of Origin HYDROTHERMAL
    Primary Ore Control LITHOLOGY
    Secondary Ore Control BEDDING
    Degree of Wallrock Alter. SLIGHT
    Type of Wallrock Alter. #1 ADV ARGILLIC
    Type of Wallrock Alter. #2 INTERM ARGILLIC
    Total Surface Area (HA) 50
    Date of Last Modification 920821

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1900
Mining method Open Stope - Gophering (Coyoting)
Year of first production 1906
Plant type Beneficiation (Mill)
Plant subcategory Flotation
Milling method Flotation

Mining district

District name Cerro De Pasco

Mineral rights holdings

Type of mineral rights State Lease
Type of mineral rights Minerals Only

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Sociedad Minera El Brocal S. A.
    Interest 100
    Home office Peru
    Year 1991
  • Type Owner
    Owner Inversiones Colquijirca S. A.
    Interest 51
    Home office Peru
    Year 1991
  • Type Owner
    Owner Grupo Fernandini
    Interest 32.7
    Home office Peru
    Year 1991
  • Type Owner
    Owner Sucesion Fernandini Elias
    Interest 16.3
    Home office Peru
    Year 1991

Comments on the ownership information

  • RECORED 02, 03,04 ARE THE OWNERS OF SOCIEDAD MINERA EL BROCAL S.A.

Production statistics

  • Year 1988
    Description Silver Production 1160000 Oz Per Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 36080037.96g
  • Year 1990
    Description Ore Production 542091 Mt Ore Per Year
  • Year 1991
    Description Contained Metal Output 4119 Mt
  • Year 1992
    Description Contained Metal Output 4502 Mt

Comments on the production information

  • UNITS OF CAPACITY ARE IN MT ORE/YEAR AND UNITS OF OUTPUT ARE IN MT CONC/YEAR.

Reserves and resources

  • Type In-situ
    Estimate year 1991
    Measured 2895883mt ore
    Indicated 2946142mt ore
    Demonstrated 5842025mt ore
    Total resources 5842025mt ore
    Commodity Subtype Grade units Group Importance Year
    Zinc Zn 6.755 wt-pct Zinc Major 1991
    Lead Pb 3.291 wt-pct Lead Major 1991
    Silver Ag 116.067 g/mt Silver Major 1991

Comments on the reserve resource information

  • ADIT DATA UPDATED AUGUST 1992, USING DATA FORM BIBLI. REF. 003- 004.
  • RECORD 1 TOTAL PUBLISHED RESERVES AS OF DEM. 1990: PROVEN ORE GRADES: ZINC;-5.03%: LEAD;-2.56%: SILVER;-3.35OZ/MT (114.857G/MT). PROBABLE ORE GRADE: ZINC;-8.45%: LEAD;-4.01%: SILVER;-3.42OZ/MT (117.257G/MT).

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method GOPHERING (COYOTING) 10-29
    Percent Recovery 100
    Capacity 326556
    Year of Information 1989

Comments on other economic factors

  • UNITS OF CAPACITY ARE IN MT ORE/YEAR.

Reference information

Bibliographic references

  • Production

    *CRU MONITOR, LEAD, JULY 1992, P. 8.

  • Deposit

    PURSER, W. F., 1971, METAL-MINING IN PERU, PAST AND PRESENT:

  • Deposit

    PRAEGER PUBS., NEW YORK, 339 PGS.

  • Deposit

    THE PERU REPORT'S - "LAS MINAS DEL PERU" - MINES AND MINERS

  • Deposit

    PERU", PP. 93-95.

General comments

Subject category Comment text
Deposit DATA BASE UPDATED USING DATA FROM BIBLI. REF. 003-004.

Reporter information

Type Date Name Affiliation Comment
Reporter 10-MAR-1997 Difrancesco, Carl A. U.S. Bureau of Mines

Beyond USGS

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

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