Tawi-Tawi

Prospect in Philippines with commodities Chromium, Copper, Gold, Molybdenum
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. 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 10280159
MAS/MILS ID 5650150030
Record type Site
Current site name Tawi-Tawi
Alternate or previous names Tawi Tawi, Bobok

Comments on the site names

  • THIS CLAIM GROUP CONTAINS THE TAWI TAWI DEPOSIT

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 120.8382, 16.4333 (WGS84)
Elevation 1312
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Philippines(country)

Asia(continent)

Land(continent)

Geographic areas

Country
Philippines

Commodities

Commodity Importance
Chromium Critical Tertiary
Copper Primary
Gold Tertiary
Molybdenum Tertiary

Materials information

Materials Type of material
Chromite Unknown
Copper Unknown
Gold Unknown
Molybdenite Unknown

Nearby scientific data

Ore Body (1) 120.8382, 16.4333

Economic information

Ore body information

  • Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 UNKNOWN
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin MAGMATIC DIFFER
    Primary Ore Control IGNEOUS
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 ADV ARGILLIC
    Type of Wallrock Alter. #2 POTASSIC
    Date of Last Modification 820624

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Metallic
Significant No

Mining district

District name Benguet Province

Mineral rights holdings

Type of mineral rights Fee Ownership
Type of mineral rights Private Lease

Ownership information

  • Type Owner-Operator
    Owner Benguet Consolidated, Inc.
    Interest 100
    Home office Philippines
    Year 1981

Comments on the ownership information

  • THE OWNER OF THE PROPERTY IS BENGUET CONSOLIDATED, INC.

Reserves and resources

  • Type In-situ
    Estimate year 1975
    Measured 90700000mt ore
    Indicated 159600000mt ore
    Demonstrated 250300000mt ore
    Total resources 250300000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.4 wt-pct Copper Major 1975

Comments on the reserve resource information

  • THIS PROPERTY WAS ADDED TO ADIT AS OF 5/20/80 DUE TO RECENT AVAILABILITY OF INFORMATION. GOLD GRADE SHOWN IN SOC. MIN. ENG. AIME TRANS. V. 262, SEPT. 1977, P. 200. JAN. 1,1980 RESERVES.

Workings at the site

  • Type of workings Underground
    Overall depth 112M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method LEACHING IN PLACE (IN SITU) 10-89
    Percent Recovery 15
    Hardness of Rock SOFT SEMIPLASTIC WITH LITTLE WATER
    Rock Characteristics SEMIPLASTIC OR PLASTIC
    Rock Support Chars. SUPPORTING
    Mine Support Chars. CAN'T SUPPORT FILL OR CAVE
    1st Condition of Workings NO MINE ENTRY
    Capacity 4464
    Capacity Units MT ORE/DAY
    Unit Production Cost 430
    Units of Production $/MT CONC
    Operating Days per Year 312
    Year of Information 1976

Comments on other economic factors

  • UNDERGROUND MINE IS UNDER DEVELOPMENT. THE YEARLY MINE/MILL CAPACITY IS 1,392,768 MT ORE. DEVELOPMENT PLAN HAS A DAILY MINE/MILL CAPACITY OF 4464 MT

Reference information

Bibliographic references

  • Deposit

    ENGINEERING AND MINING JOURNAL INTERNATIONAL DIRECTORY,

  • Deposit

    1975, P. 259.

  • Deposit

    "REPORT ON THE GEOLOGY AND MINERALIZATION OF THE BOKOD CLAIM

  • Deposit

    GROUP, BOKOD, BENGUET." DECEMBER 16, 1978 ANON.

  • Deposit

    BENGUET CONSOLIDATED, INCORPORATED ANNUAL REPORT 1979.

General comments

Subject category Comment text
Deposit THE UNDERGROUND MINE IS BEING DEVELOPED. THE DAILY ORE CAPACITY IS 30,000 TONS/DAY. A CONCENTRATOR OF 30,000 TONS/DAY CAPACITY AND IS EXPECTED TO OPEN UPON COMPLETION IN 1976. DEVELOPMENT WAS TEMPORARILY PUT OFF IN 1975 IN LIGHT OF THE COPPER MARKET OUTLOOK. MINE AND BENEF. METHOD (S) ARE UNKNOWN AT THIS TIME, (12/94)

Reporter information

Type Date Name Affiliation Comment
Reporter 14-DEC-94 Dab / Golder U.S. Bureau of Mines

Beyond USGS

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