Gag Island

Prospect in Indonesia with commodities Cobalt, Nickel
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. 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 10207236
MRDS ID W002792
MAS/MILS ID 5600370005
Record type Site
Current site name Gag Island
Related records 10069244

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 129.53244, -0.24838 (WGS84)
Elevation 300
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Indonesia(country)

Asia(continent)

Land(continent)

Geographic areas

Country
Indonesia

Commodities

Commodity Importance
Cobalt Critical Secondary
Nickel Critical Primary

Materials information

Materials Type of material
Chromite Unknown
Magnetite Unknown
Olivine Unknown
Pyroxene Unknown
Serpentine Unknown

Nearby scientific data

Ore Body (1) 129.53244, -0.24838

Economic information

Ore body information

  • Thickness 12M
    Area 1000HA
    Field Value
    Type of Orebody #1 LATERITE
    Shape of Orebody #1 TABULAR
    Primary mode of Origin RESIDUAL CONCENT
    Primary Ore Control LITHOLOGY
    Total Surface Area (HA) 1000
    Date of Last Modification 830614

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Metallic
Significant Yes
Discovery year 1920
Mining method Strip-Hillside
Milling method Pyrometallurgy Unspecified

Mining district

District name Gag Island

Ownership information

  • Type Owner
    Owner P. T. Pacific Nickel
    Interest 100
    Year 1982

Reserves and resources

  • Type In-situ
    Estimate year 1981
    Measured 160000000mt ore
    Demonstrated 160000000mt ore
    Total resources 160000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Nickel Ni 1.64 wt-pct Nickel Major 1981
    Cobalt Co 0.12 wt-pct Cobalt Minor 1981

Comments on the reserve resource information

  • PROJECT PLANS WERE DISCONTINUED IN 1982 OWING TO HIGH CAPITAL AND ENERGY COSTS. CONTRACTS SALES OF ORE FROM THIS AREA TO GREENVALE MAY BE INITAITED IN LATE-1989. ORIGINAL 1982 PROJECT PLANNED MINE THROUGH REFINERY.
  • SEVERAL ESTIMATES AVAILABLE. FEAS STUDY ESTIMATED 450 WMT @ 1.5 , CONTRACTOR AT 94.3 AT 1.65

Workings at the site

  • Type of workings Surface
    Area 1000HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method STRIP-LEVEL
    Primary Material Cover HARDPAN
    Hardness of Ore HARDPAN
    Capacity 8429
    Capacity Units MT ORE/DAY
    Unit Production Cost 2
    Units of Production $/MT ORE
    Operating Days per Year 312
    Operating Shifts per Day 3
    Year of Information 1982
  • Type of workings Surface
    Area 1000HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method PROPOSED
    Mining Method STRIP-LEVEL
    Primary Material Cover HARDPAN
    Hardness of Ore HARDPAN
    Capacity 12500
    Capacity Units MT ORE/DAY
    Unit Production Cost 2
    Units of Production $/MT ORE
    Operating Days per Year 312
    Operating Shifts per Day 3
    Year of Information 1982

Reference information

Bibliographic references

  • Reserve-Resource

    MINING MAGAZINE, APRIL 1981, P 287.

  • Deposit

    BECHTEL CORP. -ENGINEERING AND COST ESTIMATES, FEB. 1974

  • Deposit

    BECHTEL CORP. -REVISED ENGINEERING AND COST STUDY ESTIMATES,

  • Deposit

    MARCH 1976.

  • Deposit

    PETRICK ASSOCIATES - THE ECONOMICS OF MINERALS AND ENERGY

  • Deposit

    PROJECTS, 1980, VOLUME II (GAG ISLAND)

  • Deposit

    FINANCIAL EVALUATION OF THE GAG ISLAND NICKEL PROJECT- 1976

  • Deposit

    FEASIBILITY STUDY, APRIL 1976 (MAJOR U.S. INTERNATIONA

  • Deposit

    P.T. PACIFIC NICKEL INDONESIA CO. -(PRIVATE COMPANY REPORT

  • Deposit

    1972), WEST IRIAN NICKEL PROJECT.

  • Deposit

    EXPLORATION PROGRAM REPORT 1969-1972 AND ORE RESERVE

  • Deposit

    ESTIMATES (INTERNAL REPORT P.T. PACIFIC NICKEL

  • Deposit

    INDONESIA PROJECT).

  • Deposit

    ENGINEERING AND MINING JOURNAL, JANUARY 1977, NICKEL-

  • Deposit

    AUSTRALIA AND OCEANIA, P. 66.

  • Deposit

    BEMMELEN - THE GEOLOGY OF INDONESIA, VOL. II, ECONOMIC

  • Deposit

    GEOLOGY, 1949, THE HAGUE, HOLLAND.

Reporter information

Type Date Name Affiliation Comment
Reporter 18-OCT-1996 Rfb U.S. Bureau of Mines

Beyond USGS

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