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Michiquillay

Prospect in Cajamarca, Peru with commodities Copper, Gold, Molybdenum, 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. 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 10132956
MRDS ID W002020
MAS/MILS ID 3330110005
Record type Site
Current site name Michiquillay
Related records 10068772

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -78.19977, -6.89808 (WGS84)
Elevation 4000
Location accuracy 1000(meters)

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 Primary
Gold Secondary
Molybdenum Secondary
Silver Secondary

Materials information

Materials Type of material
Chalcocite Unknown
Chalcopyrite Unknown
Molybdenite Unknown

Nearby scientific data

Ore Body (1) -78.19977, -6.89808
ListMap

Economic information

Ore body information

  • Strike N30E
    Dip 90
    Thickness 600M
    Length 1300M
    Width 600M
    Depth to top 90M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 PIPELIKE
    Shape of Orebody #2 OTHER
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin RESIDUAL CONCENT
    Primary Ore Control FAULTING
    Secondary Ore Control OTHER
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 SERICITIC
    Type of Wallrock Alter. #2 SILICIFICATION
    Type of Wallrock Alter. #3 PROPYLITIC
    Strike And Dip N30E:90
    Minimum Depth to Top 20
    Avg. Thick. Unconsol. Mat. 90
    Min. Thick. Unconsol. Mat. 20
    Date of Last Modification 810811
  • Area 71.5HA
    Field Value
    Total Surface Area (HA) 71.5
    Date of Last Modification 910418

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Metallic
Significant Yes
Discovery year 1957
Mining method Open Pit
Milling method Flotation

Mining district

District name Michiquillay

Mineral rights holdings

Type of mineral rights Minerals Only
Type of mineral rights Located Claim
Type of mineral rights Patented

Land status

Ownership category State

Ownership information

  • Type Owner-Operator
    Owner Mineroperu
    Interest 100
    Home office Peru
    Year 1994

Production statistics

  • Year 1982
    Period 1980-1982
    Accuracy Estimate
    Description A Proposed Production Of 40,000mtpd Ore At .75%Cu,.025%Mo,.137g/Mtav,2.74g/Mt Ag.3yr Ppd 1980-82 Prd. 1983-2012
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 3g/mt
    Trace Gold Gold 137g/mt
    Trace Molybdenum Molybdenum 0wt-pct
    Major Copper Copper 1wt-pct

Comments on the production information

  • PRODUCT B IS A 54% MO CONC.

Reserves and resources

  • Type In-situ
    Estimate year 1984
    Indicated 590000000mt ore
    Demonstrated 590000000mt ore
    Total resources 590000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.7 wt-pct Copper Major 1984
  • Type In-situ
    Estimate year 1989
    Indicated 405000000mt ore
    Demonstrated 405000000mt ore
    Total resources 405000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.74 wt-pct Copper Major 1989
  • Type In-situ
    Estimate year 1994
    Demonstrated 544000000mt ore
    Total resources 544000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.69 wt-pct Copper Major 1994
    Silver Ag 1.7 g/mt Silver Minor 1994
    Gold Au 0.34 g/mt Gold Minor 1994
  • Type In-situ
    Estimate year 1994
    Demonstrated 544000000mt ore
    Total resources 544000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.69 wt-pct Copper Major 1994
    Silver Ag 1.7 g/mt Silver Minor 1994
    Gold Au 0.34 g/mt Gold Minor 1994

Comments on the reserve resource information

  • PROYECTO EN STUDIO- MICHIQUILLAY, 1976. (12/31/75) E/MJ, 11/84; MINERAL FOR EXPORT, 9/89, P64. (12/31/88)
  • Q-MAT 1 IS IN-SITU MINEABLE RESERVE AT 0.40% CU CUT-OFF GRADE(0% DILUTION IS ASSUMED).
  • RESERVE IS MINABLE OPEN PIT RESERVE. GRADE IS AVERAGE OVER APPROX. 30 YR. LIFE. PLANNED OPERATION WILL USE HIGH GRADE FOR FIRST YEARS.

Workings at the site

  • Type of workings Surface
    Area 71.5HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method BENCH (BERM)
    Percent Waste Rock 60.6
    Primary Material Cover M-HARD ROCKS
    Secondary Material Cover SAND, GRAVEL
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 15
    Max. Pit Slope (degrees) 34
    Capacity 40000
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 26087
    Units of Production $/MT ORE
    Operating Days per Year 350
    Operating Shifts per Day 3
    Year of Information 1980

Comments on the workings information

  • LAND AND WATER ENV. SENSITIVITY CONSIDERE EXTREME BECAUSE FEAS. STUDY ESTIMATES THAT 2000 HA OF LAND COULD BE DISTURBED(THIS INCLUDES MINE MILL, AND ALL INFRASTRUCTURE LAND ALONG WITH A RIVER DIVERSION PROJECT AND WATER SUPPLY SYSTEM FOR THE MINE, MILL AND TOWN CONSISTING OF THREE DAMS, ONE TUNNEL AND NUMEROUS PIPELINES IN THE AREA). ALSO THREE VILLAGES IN THE AREA WOULD HAVE TO BE RELOCATED BEFORE MAJOR AREA DEVELOPMENT COULD BEGIN.

Reference information

Bibliographic references

  • Reserve-Resource

    ENGINEERING AND MINING JOURNAL, NOVEMBER 1984, P. 20.

  • Reserve-Resource

    MINERAL FOR EXPORT, SEPTEMBER 1989, P. 64.

  • Reserve-Resource

    MINING JOURNAL, 9/23/94, P.218.

  • Reserve-Resource

    METALS WEEK, 10/3/94, P.6.

  • Reserve-Resource

    METALS WEEK, 10/31/94, P.8.

  • Reserve-Resource

    METALS WEEK, 11/28/94, P.3.

  • Reserve-Resource

    LATIN AMERICAN MINING LETTER, V 13/N 19, 11/30/94, P.5.

  • Deposit

    ASHESHOV, N., AND OTHERS, 1974, JAPAN AND MINEROPERU GET TOG

  • Deposit

    IN ANDEAN-PERUVIAN TIMES, LIMA, PERU, VOL. 34, NO. 1764, P.

  • Deposit

    THE MINERAL INDUSTRY OF PERU MINING MAGAZINE OCT 1974 P 260-

  • Deposit

    HOLLISTER, V. F., GEOLOGY OF THE PORPHYRY COPPER DEPOSITS OF

  • Deposit

    THE WESTERN HEMISPHERE: NEW YORK, THE AMERICAN INSTITUTE

  • Deposit

    OF MINING, METALLURGICAL, AND PETROLEUM ENGINEERS, INC.,

  • Deposit

    1978, P. 6, 7, 9, 16-17, 19-20, 22-23, 29, 180, 195.

  • Deposit

    SUTULOV, A., COPPER PORPHYRIES: SAN FRANCISCO, MILLER

  • Deposit

    FREEMAN PUBLICATIONS, INC., 1975, P. 31-32, 37-38, 82-83.

  • Deposit

    BOWEN, R., AND GUNATILAKA, A., COPPER: ITS GEOLOGY AND ECO-

  • Deposit

    NOMICS: NEW YORK, JOHN WILEY AND SONS, INC., 1977, P.

  • Deposit

    34, 39, 89.

  • Deposit

    WORLD MINING, PERU: V, 30, NO. 12, 1977, P.

  • Deposit

    MINING JOURNAL, MICHIQUILLAY DEFERRED AGAIN: V. 289,

  • Deposit

    NO. 7406, 1977, P. 87.

  • Deposit

    MINING JOURNAL, JAPANESE AT OXABAMBA: V. 289, NO. 7407,

  • Deposit

    1977, P. 107.

  • Deposit

    MINING MAGAZINE, MICHIQUILLAY PLANS: V. 125, NO. 5, 1971,

  • Deposit

    P. 489.

  • Deposit

    WORLD MINING, PERU: V. 30, NO. 3, 1977, P. 91.

  • Deposit

    MINING INTERNATIONAL YEARBOOK: LONDON, THE FINANCIAL TIMES

  • Deposit

    LIMITED, 1978, P. 237.

  • Deposit

    MINING MAGAZINE, SOUTH AMERICA: PERU: V. 127, NO. 3, 1972,

  • Deposit

    P. 269, 306.

  • Deposit

    MINING MAGAZINE, THE MINERAL INDUSTRY OF PERU: V. 131,

  • Deposit

    NO. 4, 1974, P. 264-285.

  • Deposit

    WORLD MINING, PERU: V. 27, NO. 6, 1974, P.

  • Deposit

    MEMORANDUM, BUREAU OF MINES, WASHINGTON D. C., DEC. 16,

  • Deposit

    1974.

  • Deposit

    ENGINEERING AND MINING JOURNAL, SOUTH AMERICAN AND CARIB-

  • Deposit

    BEAN: V. 176, NO. 1, 1975, P. 78.

  • Deposit

    ENGINEERING AND MINING JOURNAL, THIS MONTH IN MINING: MIN-

  • Deposit

    ERO PERU MAY SHELVE DEVELOPMENT OF MICHIQUILLAY COPPER

  • Deposit

    DEPOSIT: V. 179, NO. 4, 1978, P. 41, 70, 131.

  • Deposit

    MINING MAGAZINE, SOUTH AMERICA: PERU: V. 121, NO. 3, 1969,

  • Deposit

    P. 257.

  • Deposit

    ENGINEERING AND MINING JOURNAL, THIS MONTH IN MINING: NEW

  • Deposit

    PERUVIAN MINING POLICY DESIGNED TO BREAK TIES CAUSING

  • Deposit

    "ABSOLUTE DEPENDENCY ON FOREIGN INTERESTS": V. 171,

  • Deposit

    NO. 2, 1970, P. 102.

  • Deposit

    MINING MAGAZINE, DISSEMINATED COPPER PORPHYRIES IN PERU:

  • Deposit

    V. 121, NO. 6, 1969, P. 511-512.

  • Deposit

    MCCREARY, E., REVOLUTION AND ELECTIONS RAPIDLY CHANGING THE

  • Deposit

    FACE OF SOUTH AMERICA'S COPPER MINING: ENGINEERING AND

  • Deposit

    MINING JOURNAL, V. 172, NO. 1, 1971, P. 86-87.

  • Deposit

    WORLD MINING CATALOG, SURUEY AND DIRECTORY NUMBER, PERU:

  • Deposit

    MAJOR PORPHYRY COPPER DEPOSITS BEING DEVELOPED FOR BIG

  • Deposit

    MINES: V. 3, NO. 7, 1967, P. 63.

  • Deposit

    MINING MAGAZINE, PERUVIAN COPPER: V. 126, NO. 4, 1972,

  • Deposit

    P. 293.

  • Deposit

    MINING MAGAZINE, MICHIGUILLAY FROZEN: V. 139, NO. 4, 1978,

  • Deposit

    P. 428.

  • Deposit

    ENGINEERING AND MINING JOURNAL, SOUTH AMERICA: V. 180, NO.

  • Deposit

    1, P. 98.

  • Deposit

    GOLDER ASSOCIATES DEPOSIT PROFILE REPORT; MICHIQUILLAY,

  • Deposit

    PERU MARCH 1980

  • Deposit

    FEASIBILITY STUD.PREPARED BY MICHIQUILLAY COPPER CORP.

  • Deposit

    OF JAPAN 1972.

  • Deposit

    STRAAM COST ESTIMATING SYSTEM: JUNE 1979.

  • Deposit

    GUSTAFSON, LEWIS B. AND JOHN P. HUNT, "THE PORPHYRY COPPER

  • Deposit

    DEPOSIT AT EL SALVADOR, CHILE", ECONOMIC GEOLOGY, AUG '75.

  • Deposit

    THE NORTHERN MINER, P. B15 (APRIL 11, 1994).

  • Deposit

    LATIN AMERICAN MINING LETTER, 6/19/89, V 8/N 11, P.4.

  • Deposit

    LATIN AMERICAN MINING LETTER, 9/30/89, V 8/N 18, P.6.

  • Deposit

    LATIN AMERICAN MINING LETTER, 10/27/89, V 8/N 20, P.6.

  • Deposit

    MINERO PERU, INVESTMENT OPPORTUNITIES- MICHQUILLAY/ BEREN-

  • Deposit

    GUELA, 1991, P.24.

  • Deposit

    LATIN AMERICAN MINING LETTER, V 13/N 18, 11/8/94, P.8.

  • Deposit

    LATIN AMERICAN MINING LETTER, V 13/ N 19, 11/30/94, P.5.

General comments

Subject category Comment text
Deposit AS OF JANUARY 1978, MINEROPERU HAS POSTPONED DEVELOPMENT OF THE MICHIQUILLAY DEPOSIT, A COMMISSION HAS BEEN SET UP TO RENEGOTIATE WITH THE JAPANESE INTERESTS ON THE PROJECT.

Reporter information

Type Date Name Affiliation Comment
Reporter 03-OCT-1995 Porter, Kenneth E. U.S. Bureau of Mines

Beyond USGS

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

Maps centered on this site