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  3. Mineral Resource Data System (MRDS)

Basay

Past Producer in Philippines 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. Ownership information
  12. Production statistics
  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 10304253
MAS/MILS ID 5650250004
Record type Site
Current site name Basay
Alternate or previous names Basay Copper Project

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 122.75257, 9.26069 (WGS84)
Elevation 300
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Philippines(country)

Asia(continent)

Land(continent)

Geographic areas

Country
Philippines

Commodities

Commodity Importance
Copper Primary
Gold Secondary
Molybdenum Secondary
Silver Secondary

Materials information

Materials Type of material
Bornite Unknown
Chalcocite Unknown
Chalcopyrite Unknown
Gold Unknown
Molybdenite Unknown
Pyrite Unknown
Sericite Unknown
Silver Unknown
Bornite Unknown
Chalcopyrite Unknown
Molybdenite Unknown

Nearby scientific data

Ore Body (1) 122.75257, 9.26069
ListMap

Economic information

Ore body information

  • Strike N45W
    Dip 01E
    Thickness 300M
    Length 1500M
    Width 400M
    Depth to top 30M
    Field Value
    MAS Matrix # 2
    MAS Column # 3
    Type of Orebody #1 STOCKWORK
    Shape of Orebody #1 UNKNOWN
    Primary mode of Origin UNKNOWN
    Primary Ore Control UNKNOWN
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 PROPYLITIC
    Strike And Dip N45W:01E
    Minimum Depth to Top 10
    Date of Last Modification 810728
  • Length 60000M
    Width 25000M
    Area 275HA
    Field Value
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 DISSEMINATED
    Type of Orebody #3 BRECCIA FILL
    Total Surface Area (HA) 275
    Date of Last Modification 810728

Comments on the geologic information

  • AGE OF THE PLUTON AND MINERALIZATION IS LARAMIDE TO OLIGOCENE. THE UNSPECIFIED METAMORPHIC ROCKS ARE METAVOLCANIC AND META- SEDIMENTARY. TRENDING, MAJOR FAULT ZONE WITH AN EASTERLY DIPPING CONTACT ZONE BETWEEN THE PYROCLASTICS AND THE BATHOLITH.

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Significant Yes
Discovery year 1960
Year of first production 1979
Milling method Flotation

Mining district

District name Basay, Phil.

Ownership information

  • Type Operator
    Owner Basay Mining Corp.
    Home office Philippines
    Year 1990
  • Type Owner
    Owner Philex Mining Corp.
    Interest 100
    Home office Philippines
    Year 1990

Production statistics

  • Year 1979
    Description 26% Cu Concentrate,Same Feed Grade As K1 109890 Mt Cu Conc/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Conc. Copper Copper 109890mt 26wt-pct
  • Year 1980
    Description 25% Cu Conc. 81372 Mt Cu Conc./Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Conc. Copper Copper 81372mt 25wt-pct
  • Year 1981
    Description 25% Cu Conc. 49748 Mt Cu Conc./Yr.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Conc. Copper Copper 49748mt 25wt-pct
  • Year 1982
    Description 25% Cu Conc. 30115 Mt Cu Conc. /Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Conc. Copper Copper 30115mt 25wt-pct
  • Year 1983
    Description 25% Cu Conc. 21590 Mt Cu Conc./Yr.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Conc. Copper Copper 21590mt 25wt-pct

Comments on the production information

  • PRODUCTS B, D, AND F ARE SOLD FOB MILL (MO CONC)

Reserves and resources

  • Type In-situ
    Estimate year 1985
    Measured 143342000mt ore
    Demonstrated 143342000mt ore
    Total resources 143342000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 0.05 g/mt Gold Minor 1985
    Copper Cu 0.43 wt-pct Copper Major 1985
    Molybdenum Mo 0.0065 wt-pct Molybdenum Minor 1985
    Silver Ag 1.59 g/mt Silver Minor 1985
  • Type In-situ
    Estimate year 1985
    Indicated 89994000mt ore
    Demonstrated 89994000mt ore
    Total resources 89994000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 0.05 g/mt Gold Minor 1985
    Copper Cu 0.45 wt-pct Copper Major 1985
    Molybdenum Mo 0.0065 wt-pct Molybdenum Minor 1985
    Silver Ag 1.59 g/mt Silver Minor 1985
  • Type In-situ
    Estimate year 1985
    Indicated 233336000mt ore
    Demonstrated 233336000mt ore
    Total resources 233336000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 0.05 g/mt Gold Minor 1985
    Copper Cu 0.44 wt-pct Copper Major 1985
    Molybdenum Mo 0.0065 wt-pct Molybdenum Minor 1985
    Silver Ag 1.59 g/mt Silver Minor 1985

Comments on the reserve resource information

  • PHILIPPINE BUREAU OF MINES RESERVE RPT.- 1985, P21. (12/31/85) SAME- (12/31/85)
  • JAN 1980 RESERVES (GEOLOGICAL)- DEMONSTRATED-REF CDCP 1978 ANN RPT OP RESERVES- 27,000,000 MT @ 0.55 % CU (100% REC 0% DILUT) UG RESERVES- 209,000,000 MT @ 0.44 % CU (80% REC 10% DILUT) NOTE: ADDITIONAL GRADES ARE 0.0072 % MO, 0.03 GM AU, 0.04 GM AG. GEOLOGICAL RESERVES ARE ASSUMED TO BE DEMONSTRATED FOR COST EVALUATION. FORMERLY BASAY (SOUTHERN STAR)
  • TOTAL RESERVES AS OF 12/31/86
  • FIGURES FOR MATRIX 3, COLUMN 5 ARE FOR THE MUHONG ORE- BODY BEING DEVELOPED FROM THE BASAY DEPOSIT. DIAMOND DRILLING HAS BEEN DONE ON 165-FOOT GRID, WITH 110 HOLES WITH A TOTAL LENGTH OF 108,000 FT. FIRST PITTING WILL BE IN THE HIGHER GRADE ORE - 0.65-0.70 % CU WITH A 0.40% CUTOFF GRADE.

Workings at the site

  • Type of workings Surface
    Area 275HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method BENCH (BERM)
    Percent Waste Rock 56.5
    Avg. Bench Height (meters) 12
    Max. Pit Slope (degrees) 70
    Capacity 16875
    Capacity Units MT ORE/DAY
    Unit Production Cost 1.92
    Units of Production $/MT ORE
    Operating Days per Year 320
    Year of Information 1980
  • Type of workings Surface
    Area 275HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method ESTIMATE
    Mining Method BENCH (BERM)
    Percent Waste Rock 56.5
    Avg. Bench Height (meters) 12
    Max. Pit Slope (degrees) 70
    Capacity 16875
    Capacity Units MT ORE/DAY
    Unit Production Cost 1.92
    Units of Production $/MT ORE
    Operating Days per Year 320
    Year of Information 1980
  • Type of workings Underground
    Overall depth 283M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method BLOCK CAVING 10-79
    Percent Waste Rock 10
    Percent Recovery 80
    Hardness of Rock UNKNOWN
    Rock Characteristics UNKNOWN
    Rock Support Chars. UNKNOWN
    Mine Support Chars. UNKNOWN
    Number of Shafts 3
    1st Condition of Workings UNKNOWN
    Capacity 8438
    Capacity Units MT ORE/DAY
    Unit Production Cost 1.91
    Units of Production $/MT ORE
    Operating Days per Year 320
    Year of Information 1980
  • Type of workings Underground
    Overall depth 283M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method PROPOSED
    Percent Waste Rock 10
    Percent Recovery 82
    Hardness of Rock UNKNOWN
    Rock Characteristics UNKNOWN
    Rock Support Chars. UNKNOWN
    Mine Support Chars. UNKNOWN
    Number of Shafts 3
    1st Condition of Workings UNKNOWN
    Capacity 20000
    Capacity Units MT ORE/DAY
    Unit Production Cost 1.91
    Units of Production $/MT ORE
    Operating Days per Year 350
    Year of Information 1986

Reference information

Bibliographic references

  • Reserve-Resource

    PHILIPPINE BUREAU OF MINES, PRIMARY COPPER ORE RESERVES.

  • Reserve-Resource

    TABLE-1985, P.21.

  • Deposit

    SAEGART, 1976, PHIL PORPHYRY CU DEPOSITS, AIME PREPRINT 76-I

  • Deposit

    1975 E/MJ INTL DIRECTORY OF MINING, P 260, 26.

  • Deposit

    1976-77 WORLD MINES REGISTER, P 132.

  • Deposit

    ALMOGELA, PHIL PORPHYRY COPPERS, WORLD MINING, DEC 1974, P 2

  • Deposit

    1978 SURVEY OF MINE AND PLANT EXPANSION, E/MJ, JAN. 1978.

  • Deposit

    P. 69.

  • Deposit

    E/MJ INTERNATIONAL DIRECTORY OF MINING AND MINERAL PROCESS-

  • Deposit

    ING OPERATIONS, 1978, P. 330.

  • Deposit

    WORLD MINING NEWSLETTER, WORLD MINING, JAN. 1977, P. 7.

  • Deposit

    ALMOGELA, D.H., GEOLOGIC ENVIRONMENT AND ECONOMIC POSSIBIL-

  • Deposit

    ITIES OF PORPHYRY COPPER DEPOSITS IN THE PHILIPPINES-

  • Deposit

    SUMMARY, 1974, CIRCUM-PACIFIC ENERGY AND MINERAL RESOURCES,

  • Deposit

    P.434-438.

  • Deposit

    NEW PHILIPPINE COPPER PROJECT MOVES NEARER, MINING MAGAZINE,

  • Deposit

    MAY 1977, P. 335.

  • Deposit

    PHILIPPINE COPPER PRODUCTION WILL RISE SHARPLY, E/MJ, JUNE

  • Deposit

    1977, P. 233.

  • Deposit

    CDCP MINING CORPORATION ANNUAL REPORT 1979.

  • Deposit

    CDCP MINING CORPORATION BROCHURE.

Comments on the references

  • SOME INFORMATION OBTAINED BY GOLDER ASSOCIATES.

General comments

Subject category Comment text
Deposit PLANNED TO BE ONSTREAM MID-1978. RHENIUM IS A POTENTIAL BYPRODUCT. FOLLOWING INITIAL OPEN-PIT MINING, PLANS CALL FOR UNDER- GROUND PRODUCTION, PROBABLY UTILIZING A BLOCK CAVING SYSTEM. OPERATING COSTS RESULT IN A PRICE OF $0.62/LB OF COPPER PRO- DUCED. MINING COSTS ARE ABOUT $0.03/LB=$66/MT AND MILLING COSTS ARE $0.13/LB OR $287/MT COPPER PRODUCED. BYPRODUCT OUTPUT MAY BE WORTH UP TO $0.54/LB. PLANT OPENED IN MID-1978. CAPACITY PRODUCTION IS EXPECTED IN EARLY 1979. MINABLE RESERVES INCLUDE THE OPEN PIT RESERVES AND THE FIRST LIFT OF THE BLOCK CAVE OPERATION. MINING PLANS FOR THE BUNKVILLE, CENTRAL OPEN PIT AND LOWER PAGATBAR OREBODIES HAVE NOT YET BEEN DEVELOPED. (IT IS ASSUMED THAT THESE ADDITIONAL UG RESERVVES MAKE UP THE DIFFERENCE BETWEEN 238,000,000 MT BEING REPORTED AS "GEOLOGICAL" RESERVE AND 111,789 MT MINABLE RESERVE FOR THE ECONOMIC STUDY. MINABLE RESERVE BASED ON CUT-OFF OF 0.30% CU FOR OPEN PIT AND 0.35% CU FOR BLOCK CAVE OPERATION.

Reporter information

Type Date Name Affiliation Comment
Reporter 16-OCT-96 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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