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  3. Mineral Resource Data System (MRDS)

Lepanto

Producer in Philippines with commodities Copper, Gold, 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 10182939
MAS/MILS ID 5650150027
Record type Site
Current site name Lepanto
Alternate or previous names Lepanto Mine, Mankayan Mine

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 120.7826, 16.88326 (WGS84)
Elevation 1200
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

Philippines(country)

Asia(continent)

Land(continent)

Geographic areas

Country
Philippines

Commodities

Commodity Importance
Copper Primary
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Alunite Unknown
Barite Unknown
Calaverite Unknown
Chalcocite Unknown
Chalcopyrite Unknown
Enargite Unknown
Gold Unknown
Hessite Unknown
Kaolinite Unknown
Krennerite Unknown
Quartz Unknown
Silver Unknown
Tennantite Unknown
Chalcopyrite Unknown

Nearby scientific data

Ore Body (1) 120.7826, 16.88326
ListMap

Economic information

Ore body information

  • Strike N55W
    Dip 70N
    Length 1500M
    Width 600M
    Field Value
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 BRECCIA FILL
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin OXIDATION
    Primary Ore Control FAULTING
    Secondary Ore Control BEDDING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 SILICIFICATION
    Type of Wallrock Alter. #2 INTERM ARGILLIC
    Type of Wallrock Alter. #3 PROPYLITIC
    Strike And Dip N55W:70N
    Minimum Depth to Top 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830623

Comments on the geologic information

  • M-REC #02 M-NAM IS LUZONITE

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant Yes
Discovery year 1800
Mining method Filled Stopes - Inclined Cut and Fill
Year of first production 1937
Milling method Flotation

Mining district

District name Mankayan

Mineral rights holdings

Type of mineral rights Unknown

Land status

Ownership category Unknown

Ownership information

  • Type Operator
    Owner Lepanto Consolidated Mining Co.
    Interest 100
    Home office Philippines
    Year 1980

Production statistics

  • Year 1965
    Description 1000000 Mt Ore/Yr
  • Year 1966
    Description 1000000 Mtpy
  • Year 1967
    Description 1000000 Mtpy
  • Year 1968
    Description 1000000 Mtpy
  • Year 1969
    Description Separate Gold Mill Placed In Operation 1025100 Mtpy
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 1025100mt
  • Year 1970
    Description 1039600 Mtpy
  • Year 1971
    Description 1114200 Mtpy
  • Year 1972
    Description 1085899 Mtpy
  • Year 1973
    Description 1119000 Mtpy
  • Year 1974
    Description 875530 Mtpy
  • Year 1975
    Description 815298 Mtpy
  • Year 1976
    Description Closed Much Of Year Due To Strike 205573 Mtpy
  • Year 1977
    Description 830082 Mtpy
  • Year 1978
    Description 823486 Mtpy
  • Year 1979
    Description 909088 Mtpy

Reserves and resources

  • Type In-situ
    Estimate year 1992
    Measured 5000000mt ore
    Demonstrated 5000000mt ore
    Total resources 5000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.4 wt-pct Copper Major 1992
    Gold Au 2.5 g/mt Gold Major 1992
  • Type In-situ
    Estimate year 1986
    Indicated 3577000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.94 wt-pct Copper Major 1986
    Gold Au 2.76 g/mt Gold Major 1986
  • Type In-situ
    Estimate year 1986
    Indicated 4995000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 2.09 wt-pct Copper Major 1986
    Gold Au 3.33 g/mt Gold Major 1986

Comments on the reserve resource information

  • OTHER NAMES: MANKAYAN MINE. PROBABLE AND PROVEN RESERVES AS OF DEC. 31, 1979.
  • QAMIN, QALIN 02-03,:TELLURIDES
  • MINING 1988, (12/31/86) MCF (12/31/86)

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method INCLINED CUT AND FILL 10-65
    Percent Waste Rock 10
    Percent Recovery 85
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING
    Mine Support Chars. TIMBER
    1st Condition of Workings UNKNOWN
    Capacity 2813
    Capacity Units MT ORE/DAY
    Unit Production Cost 11.43
    Units of Production $/MT ORE
    Operating Days per Year 320
    Operating Shifts per Day 3
    Year of Information 1980

Comments on other economic factors

  • THE DEEPEST PRESENT DEVELOPMENT IS AT AN ELEVATION OF 670 M. AT PRESENT, ABOUT 10% OF THE ORE EXTRACTED COMES FROM BELOW THE 900 LEVEL. ABOUT 25% TO 35% OF THE COPPER ORE COMES FROM THE HANGING WALL SPLIT VIENS. NORMALLY, BETWEEN 90 AND 100 STOPE PREPARATION HEADINGS WITH ADVANCES OF 5000 TO 6000 METERS PER YEAR ARE IN OPERATION. ABOUT 170 STOPES ARE IN PRODUCTION, IN PREPARATION, OR BEING PHASED OUT EACH YEAR. APPROXIMATELY 70 STOPES WILL BE COMPLETELY PRODUCED IN A 12 MONTH PERIOD. TIMBER CONSUMPTION AVERAGES 400,000 BOARD-FEET PER MONTH BLASTING IS WITH DYNAMITE, AND THE POWDER FRACTION IS ABOUT 0.8 POUND PER TONNE.

Reference information

Bibliographic references

  • Reserve-Resource

    FINANCIAL TIMES MINING INTERNATIONAL YEAR BOOKS.

  • Reserve-Resource

    MINING 1987-1988 P. 258.

  • Reserve-Resource

    E/MJ SEPT. 1992, P38-43.

  • Deposit

    CABALLERO, J. C., LOVELY, J. B., AND CULATON, F. C., MILLING

  • Deposit

    PRACTICE AT THE LEPANTO GOLD MILL, MINERAL ENGINEERING

  • Deposit

    MAGAZINE. APR-JUN 1975, PP. 44-52.

  • Deposit

    MINERAL NEWS SERVICE; BUREAU OF MINES, MANILA; 1975; PG. 12.

  • Deposit

    COPPER DEPOSITS OF THE PHILIPPINES; PART 1 TEXT; SPECIAL

  • Deposit

    PROJECTS SERIES PUBLICATION NO. 16; REPUBLIC OF THE

  • Deposit

    PHILIPPINES BUREAU OF MINES; MANILA 1956; PP. 4-6 & 7.

  • Deposit

    COPPER IN THE PHILIPPINES: INDUSTRIAL DEVELOPMENT DIVISION

  • Deposit

    UNECAFE; DEVELOPMENT OF MINERAL RESOURCES IN ASIA AND THE

  • Deposit

    FAR EAST; 1953; P. 358.

  • Deposit

    COPPER IN THE PHILIPPINES; INFORM. CIRC. NO. 16, PHILIPPINES

  • Deposit

    BUREAU OF MINES; MANILA, 1953, P. 358.

  • Deposit

    DATA ON PHILIPPINE MINERAL RESOURCES; INFORM. CIRC. NO. 22;

  • Deposit

    PHILIPPINE BUREAU OF MINES, MANILA, JAN. 1975, P. 27.

  • Deposit

    ECONOMIC GEOLOGY; VOL. 64: 1969; P. 661.

  • Deposit

    ENGINEERING AND MINING JOURNAL INTERNATIONAL DIRECTORY,

  • Deposit

    1975, P. 261.

  • Deposit

    FERNANDEZ, J.C., 1974 MINERAL NEWS SERVICE, PHIL. BUR.

  • Deposit

    MINES, P. 12.

  • Deposit

    LEPANTO CONSOLIDATED MINING COMPANY, ANNUAL REPORT 1979.

  • Deposit

    MINERAL NEWS SERVICE; BUREAU OF MINES, MANILA; 1975, P. 12.

  • Deposit

    MINERAL RESOURCES OF THE PHILIPPINES. INFORM. CIRC. NO. 19.

  • Deposit

    PHILIPPINES BUREAU OF MINES, MANILA, 1955, PP. 5, 36-41.

  • Deposit

    MINING DEVELOPMENTS IN ASIA AND THE FAR EAST; UNITED NATIONS

  • Deposit

    MINERAL RESOURCES DEVELOPMENT SERIES NO. 27, 1965, P. 110.

  • Deposit

    MINING JOURNAL; JAN. 30, 1976.

  • Deposit

    UNECAFE, MINERAL DEVELOPMENT IN ASIA AND THE FAR EAST; 1967;

  • Deposit

    MINERAL RESOURCES DEVELOPMENT SERIES, NO. 33; NEW YORK.

  • Deposit

    1968; PP. 114 & 119.

  • Deposit

    LEPANTO CONSOLIDATED MINING COMPANY, MINING ANNUAL 76 &

  • Deposit

    BUYERS' GUIDE; PP.78-82.

  • Deposit

    REBUILDING LEPANTO-THE FAR EAST'S LARGEST PRODUCER OF

  • Deposit

    COPPER, ENGINEERING AND MINING JOURNAL-VOL. 152, NO.3;

  • Deposit

    PP.72-113.

  • Deposit

    PHILIPPINE BUREAU OF MINES SPEC. PROJECT #16, 1956.

  • Deposit

    E/MJ 1/81, P 148,149.

  • Deposit

    MJ, "LEPANTO TO RESUME". 2/8/85, P. 99.

  • Deposit

    INTERNATIONAL MINING, 4/85 - P. 77.

  • Deposit

    E/MJ, 5/87 - P. 75.

  • Deposit

    LEPANTO CONSOLIDATED MINING COMPANY, LEPANTO MINE DIVISION.

  • Deposit

    LEPANTO, BENGUET, APRIL 10, 1986.

General comments

Subject category Comment text
Deposit G-ATM: 1.0 TO 50 METERS

Reporter information

Type Date Name Affiliation Comment
Reporter 10-MAR-97 Porter, Kenneth E. 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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