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Quiruvilca

Producer in Cajamarca, Peru with commodities Copper, Gold, Lead, Silver, Zinc, Mercury
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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. Land status
  12. Ownership information
  13. Reserves and resources
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10133117
MAS/MILS ID 3330110007
Record type Site
Current site name Quiruvilca

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -77.99976, -7.79804 (WGS84)
Elevation 4000

Site location context

Political divisions (FIPS codes)

Cajamarca(province)

Peru(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Peru Cajamarca

Commodities

Commodity Importance
Copper Secondary
Gold Secondary
Lead Primary
Silver Primary
Zinc Critical Primary
Mercury Tertiary

Materials information

Materials Type of material
Enargite Unknown
Galena Unknown
Sphalerite Unknown
Tetrahedrite Unknown

Nearby scientific data

Ore Body (1) -77.99976, -7.79804
ListMap

Economic information

Ore body information

  • Thickness 1M
    Length 2000M
    Width 220M
    Depth to top 50M
    Field Value
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Secondary Ore Control IGNEOUS
    Degree of Wallrock Alter. SLIGHT
    Type of Wallrock Alter. #1 PYRITIZATION
    Type of Wallrock Alter. #2 SERICITIC
    Strike And Dip N90E:
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 780615

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant Yes
Mining method Filled Stopes - Horiz Cut and Fill W/Tailings
Year of first production 1920
Milling method Flotation

Mining district

District name Quiruvilca

Land status

Ownership category State

Ownership information

  • Type Owner-Operator
    Owner Corporacion Minera Nor-Peru
    Interest 20
    Home office Peru
    Year 1989
  • Type Owner
    Owner Asarco (American Smelting And Refining Co.)
    Interest 80
    Home office New York
    Year 1994

Reserves and resources

  • Type In-situ
    Estimate year 1993
    Demonstrated 4900000mt ore
    Total resources 4900000mt ore
    Commodity Subtype Grade units Group Importance Year
    Zinc Zn 4.24 wt-pct Zinc Major 1993
    Lead Pb 1.58 wt-pct Lead Major 1993
  • Type In-situ
    Estimate year 1994
    Demonstrated 3972000mt ore
    Total resources 3972000mt ore
    Commodity Subtype Grade units Group Importance Year
    Zinc Zn 4.27 wt-pct Zinc Major 1994
    Silver Ag 209.8 g/mt Silver Major 1994
    Lead Pb 1.55 wt-pct Lead Major 1994
    Copper Cu 0.53 wt-pct Copper Minor 1994
    Gold Au 0.7 g/mt Gold Minor 1994
  • Type In-situ
    Estimate year 1971
    Measured 350000mt ore
    Demonstrated 350000mt ore
    Total resources 350000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 3 wt-pct Copper Minor 1971
    Lead Pb 2 wt-pct Lead Major 1971
    Zinc Zn 5 wt-pct Zinc Major 1971
    Silver Ag 155 g/mt Silver Major 1971
    Mercury Hg 0.04 wt-pct Mercury Trace 1971

Comments on the reserve resource information

  • DATA FROM E&MJ INTL. DIR OF MINING 87/88.
  • INFORMATION FROM ASARCO 10K, DEC. 31, 1977 PUBLIC INFORMATION FROM E&MJ INTERNATIONAL DIR OF MINING, 1987- 88; ORE CAPACITY = 1181 TONNES/DAY; MILL FEED CAPACITY = 1363 TO NNES/DAY. NOTE: THE FINANCIAL TIMES INTERNATIONAL YEARBOOK: MIN ING 1988 HAS ORE CAPACITY = 1363 TONNES/DAY. U.S. EMBASSY REPORTS RESERVES OF 2,095,350 ST AT 9.11 OZ AG/ST MINE PRODUCED 2,586,588 OZ OF FINE SILVER IN 1988.

Workings at the site

  • Type of workings Underground
    Overall depth 250M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method ACTUAL
    Mining Method HORIZ CUT & FILL W/WASTE ROCK 10-60
    Percent Waste Rock 20
    Hardness of Rock HARDROCK FISSURED WITH EXCESSIVE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. UNSUPPORTING NO FLOW
    Mine Support Chars. TIMBER W/LAGGING CONCRETE-UNREINFOR
    Number of Shafts 3
    Number of Adits 7
    1st Condition of Workings OPEN
    2nd Condition of Workings PART ACCESSIBLE
    Capacity 1000
    Capacity Units MT ORE/DAY
    Unit Production Cost 16.5
    Units of Production $/MT ORE
    Operating Days per Year 350
    Operating Shifts per Day 2
    Year of Information 1975

Reference information

Bibliographic references

  • Reserve-Resource

    AME MINERAL ECONOMICS QUARTERLY MINE ANALYSIS, JUNE 1993,

  • Reserve-Resource

    P. 39, 49.

  • Reserve-Resource

    ASARCO INC., 1993 10-K, P.A15-A19.

  • Deposit

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

  • Deposit

    PRAEGER, NEW YORK, 339 PGS.

  • Deposit

    1975 E/MJ INT.DIR. P.257.

  • Deposit

    BARTOS, PAUL J., GEOLOGY, MINERALIZATION, ALTERATION, AND

  • Deposit

    ZONING OF THE CU-PB-ZN-AG LODES AT QUIRUVILCA, PERU, IN

  • Deposit

    PACIFIC RIM CONGRESS 87, AUGUST 26-29, 1987, P.519-523.

General comments

Subject category Comment text
Deposit CU CONCENTRATES SENT TO TACOMA, WASH., ZN CONS TO CORPUS CHRISTI, TE PB CONC. SENT TO SELBY,CALIF.;EMPLOYS 1400(1975). 76-RCD 651-METHOD OF BENE. IS LEACHING USING ACID MINE WATER IRON. TRANSPORT:CONCS.BY TRAMWAY TO SAMNE,ROAD FROM SAMNE TO SALAV EXPORT TO VAR. US PLANTS(SEE RECORDS 800+801). PURSER STATES CEMENT CU PROD:40 TO 200 TONS PER MO OF 70 PCT

Reporter information

Type Date Name Affiliation Comment
Reporter 23-SEP-1996 Porter, Kenneth E. U.S. Bureau of Mines

Beyond USGS

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

Operator history (post-MRDS)

MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:

  • Asarco (American Smelting And Refining Co.) — acquired by Asarco LLC, subsidiary of Grupo México (2009)
    American Smelting and Refining Co. Filed Chapter 11 in 2005; acquired out of bankruptcy by Grupo México in 2009.

Curated by qvyshift.com from publicly-reported M&A activity (SEC filings, press releases, USGS Mineral Yearbooks). Not authoritative — verify against primary sources before relying on it. The MSHA panel above is the current authoritative source for actively-permitted mines.

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