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Gag Island Deposit

Prospect in Indonesia with commodities Nickel, Cobalt, Iron
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Host and associated rocks
  7. Nearby scientific data
  8. Geologic structures
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Ownership information
  12. Reserves and resources
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10024518
MRDS ID ISM0242
Record type Site
Current site name Gag Island Deposit

Geographic coordinates

Geographic coordinates: 129.74914, -0.49836 (WGS84)
Elevation 300
Relative position ORE BODY; 10 M

Site location context

Political divisions (FIPS codes)

Indonesia(country)

Asia(continent)

Land(continent)

Geographic areas

Country
Indonesia

Comments on the location information

  • WEST OF IRIAN JAYA AND VOGELKOOP PENINSULA; 50 KM W OF WAIGEO ISLAND

Commodities

Commodity Importance
Nickel Critical Primary
Cobalt Critical Primary
Iron Primary

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Harzburgite
  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite

Nearby scientific data

(1) 129.74914, -0.49836
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Tropical Weathering Of Ultramafic Rocks

Ore body information

  • Depth to top 5M

Comments on the geologic information

  • FAULTING; MES-CEN; LMON; GRNR; ISLAND CONSISTS OF EXPOSED OCEANIC CRUST AND MANTLE.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Significant No
Discovery year 1952

Ownership information

  • Type Owner
    Owner P. T. Pacific Nikkel (U.S. Steel, Hoogovens, Amoco)

Comments on the production information

  • TO 52,000 MT/YR NI BY 1984.MINING PLAN: DURING THE FIRST 10 YEARS, 29.3 MIL TONS OF ORE CONTAINING 2.3% NI, 0.074% CO, AND 24.0% FE WILL BE -MINED. NICKEL AND COBALT RECOVERY RATES WILL BE 82.3% AND 24.-9% RESPECTIVELY. THE SECOND 10 YEAR PERIOD WILL SEE 39 MIL TO-NS OF ORE CONTAINING 1.5% NI, 0.09% CO, AND 26.7% FE MINED. N-ICKEL RECOVERY WILL BE 84.5%, WHILE COBALT RECOVERY WILL BE 45-.0%. AS OF 1981, THERE WERE NO FIRM PLANS TO START PRODUCTION-.

Reserves and resources

  • Type In-situ
    Estimate year 1981
    Commodity Subtype Grade units Group Importance Year
    Nickel Ni 1.64 wt-pct Nickel Major 1981
    Cobalt Co 0.12 wt-pct Cobalt Major 1981

Comments on the reserve resource information

  • RESERVES ARE REPORTED TO BE SUFFICIENT FOR 50 YEARS AT CUTOFF GRADE OF 1.1% NI.

Comments on development

  • NON-GEOLOGIC CONSTRAINTS ON DEVELOPMENT OR EXPANSION IN 1-5 YRS. ( X: WORLD WIDE OVERSUPPLY AND DEPRESSED PRICES OF NICKEL). DEVELOPMENT(NO); EXPLORATION(YES); 90% LIMONITIC ORE, 10% SILICATE ORE; AVERAGE ORE THICKNESS 12 M.

Reference information

Bibliographic references

  • Deposit

    MINING MAGAZINE, 1981, PANORAMA--GAG ISLAND NICKEL OUTLOOK NOT PROMISING: MINING MAGAZINE, V. 144, NO. 4, P. 287--289. (RR1, PA8)

  • Deposit

    HAVRYLUK, IHOR, AND HUFF, R., 1979, THE CURRENT STATUS OF THE GAG ISLAND NICKEL LATERITE PROJECT, IN EVANS, D.J.I.-, SHOEMAKER, R.S., AND VELTMA, H., EDS.: INTERNATIONAL LATERI-TE SYMPOSIUM, AMERICAN INSTITUTE OF MINING, METALLURGICAL AND -PETROLEUM ENGINEERS, P. 382-394.

  • Deposit

    HAMILTON, WARREN, 1979, TECTONICS OF THE INDONESIAN REGION: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1078, P. 19-1. (L11, G2A, G13)

  • Production

    PA8: RF1, P. 287

General comments

Subject category Comment text
Deposit THIS RECORD WAS COMPILED FOR THE INTERNATIONAL STRATEGIC MINERALS INVENTORY. THE DATA WERE USED IN PREPARATION OF THE USGS CIRCULAR 930 SERIES OF REPORTS. MINERAL RESOURCE CATEGORIES AND CODES HEREIN ARE FROM THE INTERNATIONAL CLASSIFICATION SYSTEM RECOMMENDED BY THE UNITED NATIONS GROUP OF EXPERTS ON DEFINITIONS AND TERMINOLOGY FOR MINERAL RESOURCES. (SEE NATIONAL RESOURCES FORUM, V. 4, NO. 3, P. 307-313.). NONE (TO BE SURFACE MINED) 0-5 M NI-CO MIXED CONCENTRATE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1983 Foose, Michael P. U.S. Geological Survey

Beyond USGS

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

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