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Coto Masinloc-Ug

Producer in Philippines with commodities Aluminum, Chromium, Silica
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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. Ownership information
  11. Production statistics
  12. Reserves and resources
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10280579
MAS/MILS ID 5650150079
Record type Site
Current site name Coto Masinloc-Ug
Alternate or previous names Coto Masinloc

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 120.09242, 15.56258 (WGS84)
Elevation 700
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Philippines(country)

Asia(continent)

Land(continent)

Geographic areas

Country
Philippines

Commodities

Commodity Importance
Aluminum Critical Tertiary
Chromium Critical Primary
Silica Tertiary

Materials information

Materials Type of material
Chromite Unknown
Olivine Unknown
Serpentine Unknown

Nearby scientific data

Ore Body (1) 120.09242, 15.56258
ListMap

Economic information

Ore body information

  • Strike N30E
    Dip 50W
    Thickness 45M
    Length 610M
    Width 540M
    Depth to top 20M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 LENTICULAR
    Type of Orebody #2 OTHER
    Shape of Orebody #2 MASSIVE
    Shape of Orebody #3 IRREGULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control BEDDING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N30E:50W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 3
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830712
  • Area 33HA
    Field Value
    Total Surface Area (HA) 33
    Date of Last Modification 910418

Comments on the geologic information

  • DOLERITE DIKES CUT AND DISPLACE THE CHROMITE LENSES THROUGHOUT THE AREA.

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Significant Yes
Discovery year 1925
Mining method Filled Stopes - Horiz Cut and Fill W/Waste Rock
Year of first production 1965
Milling method Gravity

Ownership information

  • Type Operator
    Owner Benguet Consolidated Inc.
    Year 1981
  • Type Owner
    Owner Consolidated Mines Inc.
    Interest 100
    Year 1981

Production statistics

  • Year 1989
    Description 23.3%, Cr2o3 425000 Metric Tons Ore/Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Cr2O3 Ore Chromium Chromium 425000mt 23wt-pct

Comments on the production information

  • TAKEN FROM THE AVERAGES CONCENTRATE GRADES SHIPPED IN 1987.
  • ALL PRODUCTS ARE REFRACTORY GRADE CHROMITE PRODUCTS. LUMP MATERIAL IS PRODUCED IN 3 DIFFERENT SIZES OR GRADES. SIO2 CONTENT RANGES FROM 6-8% IN LUMP ORE AND +10 MESH PROD- UCTS TO 2-5% IN OTHER SIZE PRODUCERS. AL2O3 CONTENT IN ALL PRODUCTS IS A MINIMUM OF 27%.

Reserves and resources

  • Type In-situ
    Estimate year 1989
    Indicated 6119000mt ore
    Demonstrated 6119000mt ore
    Total resources 6119000mt ore
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 23.3 wt-pct Chromium Major 1989

Comments on the reserve resource information

  • THE COTO OPERATIONS HAVE ALWAYS HAD AT LEAST 7 TO 10 YEARS WORTH OF PRODUCTION IN THEIR REPORTED RESERVE CATEGORY. THE 1980 REPORTED RESERVE WAS 5,307,000 METRIC TONS OF MASSIVE, DISSEMINATED HIGH SILICA AND STOCKPILED FINES ORE. THIS INCLUDED +6 MINERAL RESERVATION NUMBER 1 RESERVE. HOWEVER, IN 1981 A NEW 25 YEAR OPERATING AGREEMENT WAS SIGNED BY BENQUET AND CONSOLIDATED MINES WHICH WOULD INDICATE MUCH LARGER POTENTIAL THAN IS BEING REPORTED. SINCE THE START OF OPERATIONS IN 1937, PRODUCTION HAS AMMOUNTED TO 15,000,000 METRIC TONS OF PRODUCTS WHICH WOULD INDICATE MINING OF AT LEAST 30,000,000 METRIC TONS OF CRUDE ORE. IN 1967, COTO RESERVES WERE ESTIMATED AT 9,325,000 METRIC TONS. IT IS ESTIMATED THAT FROM 1967-1980 ABOUT 12,000,000 METRIC TONS OF CRUDE ORE WOULD HAVE BEEN EXTRACTED WHICH STILL LEAVES RESERVE AS 5,307,000 METRIC TONS AS OF 1980. THUS IT HAS BEEN ASSUMED THAT THE DEMONSTRATED RESOURCE CONSERVATIVELY SHOULD REPRESENT AN ADDITIONAL TONNAGE OF 75% OF +6 REPORTED "PROVEN" RESERVE. THUS, THE RESOURCE IN Q-MAT 1 REPRESENTS THE FOLLOWING CATEGORIES: 9,136,000 MT IN-SITU, PROVEN, AT 18 OREBODIES 500,000 MT IN MASINLOC-ORBIT CLAIMS 10 KM S OF COTO 297,000 MT STOCKPILED FINES 6,852,000 MT IN-SITU, PROBABLE AT 18 OREBODIES. OVER THE LIFE OF THIS RESOURCE, AT LEAST 40 % WILL HAVE TO BE MINED BY UG METHODS IN COMPARISON WITH THE PRESENT 30 % FROM UG MINING.
  • SITE VISIT JUNE 1987. SURFACE MINING DISCONTINUED IN 1986. IN 1982 THE ECONOMIC LIMIT FOR SURFACE MINING SAID TO BE 20/1 WASTE TO ORE AND PLANS WERE FOR 16/1 IN 1982. EST. 1,774,000 MT SURFACE ORE LEFT AT COTO, 1,050,000 MT SURFACE ORE AT SATELLITE ORE BODIES AND 1,211,000 MT OF DISSEMINATED SURFACE ORE.FOR UG: 100% REC./35 % DILUTION FOR ANALYSIS: 425,000 MTPY ROM FOR: 18,030 MTPY OF "METBLEND" LUMP AT 28% CR2O3, 14,050 MTPY REFRACTORY LUMP AT 31% CR2O3,
  • 35,700 MTPY +10 M CONC.AT 32% CR2O3, 35,700 MTPY -10 M CONC.AT 33% CR2O3 AND 9,320 MTPY "LOSIL"& FOUNDRY SAND AT 34% CR2O3.

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method HORIZ CUT & FILL W/WASTE ROCK 10-60
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. POST, HEADBOARD, CAPS, ROOF BOLTS
    Number of Shafts 3
    1st Condition of Workings OPEN
    Capacity 1218
    Capacity Units MT ORE/DAY
    Unit Production Cost 19.55
    Units of Production $/MT ORE
    Operating Days per Year 312
    Operating Shifts per Day 1
    Year of Information 1989
  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method PROPOSED
    Mining Method HORIZ CUT & FILL W/TAILINGS 10-60
    Percent Recovery 90
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Number of Shafts 3
    1st Condition of Workings OPEN
    Capacity 1362
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE
    Operating Days per Year 312
    Operating Shifts per Day 1
    Year of Information 1987

Comments on other economic factors

  • TWO UNDERGROUND MINES PRESENTLY IN OPERATION - ZMCR (N OF LEWIS RIVER AND COTO (SOUTH OF LEWIS RIVER). OF 18 ORE BODIES IN REPORTED RESERVE CALCULATIONS, 6 ARE CONSIDERED AS UG RESERVES AND REPRESENT 78% OF TOTAL RESERVE IN-SITU. THE 6 OREBODIES ARE: WESTERN, LOWER WESTERN, IIII, TWO UNDERGROUND MINES PRESENTLY IN OPERATION-ZMCR (N OF LAWIS RIVER). AND COTO (SOUTH OF LAWIS RIVER). OF 18 ORE-
  • TRANSPORTATION COST FROM MILL TO SMELTER IS $8.30.

Reference information

Bibliographic references

  • Reserve-Resource

    SULIT, J.P., 19- , "GEOPHYSICAL EXPLORATION AND DISCOVERY OF

  • Reserve-Resource

    DATED MINES INC." P. 89-108.

  • Reserve-Resource

    CONSOLIDATED MINES, INC. ANNUAL REPORT, 1979, P. 1-16.

  • Reserve-Resource

    BESA, R.A., AND DELA CRUZ, S.D., 1982, MASINLOC CHROMITE

  • Reserve-Resource

    OPERATION TODAY AND THE FUTURE, REPUBLIC OF THE

  • Reserve-Resource

    PHILLIPINES.

  • Deposit

    ANON. 1955. "CHROMITE IN THE PHILIPPINES," BUREAU OF MINES,

  • Deposit

    DEPARTMENT OF AGRICULTURE AND NATURAL RESOURCES,

  • Deposit

    REPUBLIC OF THE PHILIPPINES. PP. 261-267.

  • Deposit

    ANON. 1973. "GENERAL FEATURES OF THE ORE DEPOSITS OF THE

  • Deposit

    MOBILE BELT," AUSTRALIAN GEOLOGICAL SOCIETY BULLETIN

  • Deposit

    NO. 141. PP. 196-197.

  • Deposit

    DOLINO, J.L. AND ALERIN, D.H. 1976. "CHROMITE DEPOSIT,"

  • Deposit

    ORBIT PHILIPPINES CONSOLIDATED MINES.

  • Deposit

    SULIT, J.P. 19--. "GEOPHYSICAL EXPLORATION AND DISCOVERY OF

  • Deposit

    CHROMITE ORE BODIES IN THE MASINLOC MINES OF CONSOLI-

  • Deposit

    DATED MINES INC." PP. 89-108.

  • Deposit

    "COPPER, CHROMITE AND PYRITE." BENGUET CONSOLIDATED ANNUAL

  • Deposit

    REPORT 1977.

  • Deposit

    THE DISPUTE BETWEEN BENGUET CORPORATION AND CONSOLIDATED

  • Deposit

    MINES INC. MINING JOURNAL-JANUARY 9, 1981.

  • Deposit

    BESA, RAMON A. "HEAVY MEDIA SEPARATION OF REFRACTORY

  • Deposit

    CHROMITE ORE AT COTO, MASINLOC, ZAMABLES." PAPER NO. 5.

  • Deposit

    CHROME - CHROME MINES IN THE PHILIPPINES 1.

  • Deposit

    BACANI, MANUEL M. AND TARONGOY, HENRY C. "MINING METHODS OF

  • Deposit

    PHILIPPINE CHROMITE DEPOSITS." 1979.

  • Deposit

    OLONDRIZ, JOSE MARINO. ANNUAL REPORT OF CONSOLIDATED MINES

  • Deposit

    INC. NOVEMBER 1968. PHILIPPINE MINING RECORD.

  • Deposit

    CONSOLIDATED MINES, INC. ANNUAL REPORT. 1979.

  • Deposit

    HIGHLIGHTS OF THE YEAR. CONSOLIDATED RESULTS.

  • Deposit

    "ORE RESERVES." PHILIPPINE MINING RECORD. JUNE 1970.

  • Deposit

    MINING JOURNAL, JANUARY 1981, P. 21.

  • Deposit

    BENMGUET CONSOLIDATED ANNUAL REPORT 1977, 1976.

  • Deposit

    PHILLIPINE MINING RECORD, JUNE 1970.

  • Deposit

    MINING INTERNATIONAL YEARBOOK 1978, P. 132-133.

  • Deposit

    BACUTA, G.C., JR., 1978, GEOLOGY OF SOMEW ALPINE-TYPE

  • Deposit

    CHROMITE DEPOSITS IN THE PHILLIPINES, PHILLIPINE BUREAU

  • Deposit

    OF MINES,. 22P.

  • Deposit

    JOVERO, E., MUYRANG, B., AND MACABUHAY, R., JUME 8, 1978,

  • Deposit

    GEOLOGICAL AND MINERAL INVESTIGATION OF CHROMITE

  • Deposit

    DEPOSITS IN GUISGUIS, STA. CRUZ, ZAMBALES.

Reporter information

Type Date Name Affiliation Comment
Reporter 20-AUG-1992 Boyle, Ed 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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