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  3. Mineral Resource Data System (MRDS)

Namosi

Plant in Fiji 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. 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 10135206
MAS/MILS ID 6860050002
Record type Site
Current site name Namosi
Alternate or previous names Waisoi West, Wairokodra, Namosi Copper Deposits, Waisoi East, Wainabama, Waivaka

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 178.19849, -18.08049 (WGS84)
Elevation 650
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Fiji(country)

Geographic areas

Country
Fiji

Commodities

Commodity Importance
Copper Primary
Gold Secondary
Molybdenum Secondary
Silver Secondary

Materials information

Materials Type of material
Bornite Unknown
Chalcopyrite Unknown
Molybdenite Unknown

Nearby scientific data

Ore Body (1) 178.19849, -18.08049
ListMap

Economic information

Ore body information

  • Strike N30W
    Dip 70S
    Thickness 200M
    Length 900M
    Width 800M
    Depth to top 200M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 STOCKWORK
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 SEDIMENTARY
    Shape of Orebody #2 PIPELIKE
    Primary mode of Origin MAGMATIC DIFFER
    Secondary mode of Origin SEDIMENTATION
    Primary Ore Control IGNEOUS
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 INTERM ARGILLIC
    Type of Wallrock Alter. #2 POTASSIC
    Strike And Dip N30W:70S
    Date of Last Modification 820715
  • Area 482HA
    Field Value
    Total Surface Area (HA) 482
    Date of Last Modification 910418

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1968
Mining method Open Pit
Plant type Beneficiation (Mill)
Plant subcategory Flotation
Milling method Flotation

Mining district

District name Waisoi

Ownership information

  • Type Owner-Operator
    Owner Placer Pacific Ltd.
    Interest 100
    Home office Australia
    Year 1994
    First year 1991

Comments on the ownership information

  • VITI COPPER LTD IS A JOINT VENTURE CONSISTING OF: ANGLO PACIFIC (NAMOSI) LTD 25.3% COPPER RESOURCES (FIJI) LTD 25.2% PRESUSSAG FIJI LIMITED 25.2% RST (FIJI) INC. 24.3%. PLACER PACIFIC GAINED THE RIGHT TO RE-EVALUATE THE DEPOSITS DURING 1991. PLACER DOME WITHDREW FROM 50/50 JOINT VENTURE 10/93. PLACER DOME INC. OWNES 75.5% OF PLACER PACIFIC AS OF END 1993.

Reserves and resources

  • Type In-situ
    Estimate year 1979
    Indicated 150000000mt ore
    Demonstrated 150000000mt ore
    Total resources 150000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.5 wt-pct Copper Major 1979
  • Type In-situ
    Estimate year 1979
    Indicated 300000000mt ore
    Demonstrated 300000000mt ore
    Total resources 300000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.48 wt-pct Copper Major 1979
  • Type In-situ
    Estimate year 1985
    Indicated 500000000mt ore
    Demonstrated 500000000mt ore
    Total resources 500000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 0.16 g/mt Gold Minor 1985
    Copper Cu 0.49 wt-pct Copper Major 1985
    Silver Ag 1 g/mt Silver Minor 1985
  • Type In-situ
    Estimate year 1991
    Indicated 594000000mt ore
    Demonstrated 594000000mt ore
    Total resources 594000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 0.15 g/mt Gold Minor 1991
    Copper Cu 0.45 wt-pct Copper Major 1991
  • Type In-situ
    Estimate year 1994
    Demonstrated 930000000mt ore
    Total resources 930000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 0.14 g/mt Gold Minor 1994
    Copper Cu 0.43 wt-pct Copper Major 1994
  • Type In-situ
    Estimate year 1994
    Demonstrated 930000000mt ore
    Total resources 930000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 0.14 g/mt Gold Minor 1994
    Copper Cu 0.43 wt-pct Copper Major 1994

Comments on the reserve resource information

  • PLACER PACIFIC CONDUCTED AN ECONOMIC EVALUATION FOR MINING AND PROCESSING 100,000 MTPD ORE. PLACER DOME WITHDREW FROM THE PROJECT 10/93. PLACER PACIFIC IS CONTINUING TO EVALUATE TO FEASIBILITY STUDY STAGE. RESERVES IN TWO DEPOSITS: WAISOI EAST-150,000,000 MT AT 0.5% CU
  • TOTAL MINEABLE RESOURCE. GEOLOGICAL RESOURCE. TOTAL RESERVES AS OF 12/31/86, USED IN 1987 EVALUATION.

Workings at the site

  • Type of workings Surface
    Area 482HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Percent Waste Rock 63
    Primary Material Cover M-HARD ROCKS
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 15
    Max. Pit Slope (degrees) 40
    Capacity 60000
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 1000
    Units of Production $/MT ORE
    Operating Days per Year 350
    Operating Shifts per Day 3
    Year of Information 1986

Comments on other economic factors

  • CU CONCENTRATE IS SHIPPED FROM THE MILL TO AN UNSPECIFIED COUNTRY IN EUROPE, PROBABLY GERMANY.

Reference information

Bibliographic references

  • Reserve-Resource

    RICHMOND, R.N CASE HISTORY OF MINERAL DEVELOPMENT IN FIJI:

  • Reserve-Resource

    THE NAMOSI COPPER PROSPECT. SUVA, FIJI

  • Reserve-Resource

    INTERNATIONAL MINING, OCT. 1985, P. 63.

  • Reserve-Resource

    MINING ENGINEERING, JAN. 1986, P. 9.

  • Reserve-Resource

    MINING JOURNAL, AUG. 23, 1985, P. 136.

  • Reserve-Resource

    PLACER PACIFIC LTD., 1991 ANNUAL REPORT, P. 23.

  • Reserve-Resource

    PLACER PACIFIC LTD., 1993 ANNUAL REPORT, P. 5.

  • Reserve-Resource

    PLACER PACIFIC LTD., ANNUAL REPORT P. 22, 23.

  • Reserve-Resource

    PLACER DOME INC., 1993 ANNUAL REPORT, P.13,14.

  • Deposit

    THE MINING RECORD "EXPLORATION CONSORTIUM FOR COPPER ON FIJI

  • Deposit

    SEPT.7, 1977 PG.17.

  • Deposit

    MINER NEWSPAPER, "PROJECT OPTIONS" MARCH 17-30 1980 P.29.

  • Deposit

    WORLD MINING, FIJI, 4/80, P.80.

  • Deposit

    SKILLINGS, STATEMENT ON THE STATUS OF THE NAMOSI JOINT

  • Deposit

    VENTURE IN FIJI, 2/9/80, P.8.

  • Deposit

    SKILLINGS, EXPLORATION ON NAMOSI COPPER PROSPECT IN FIJI,

  • Deposit

    9/29/79, P.8.

  • Deposit

    MINING JOURNAL, COPPER PROSPECT IN FIJI, 9/21/79, P.243.

  • Deposit

    WORLD MINING, FIJI, 12/79, P.85,86.

  • Deposit

    SKILLINGS, VITI COPPER FORMED FOR NAMOSI COPPER PROJECT,

  • Deposit

    3/3/79, P.6.

  • Deposit

    SKILLINGS, COPPER RESOURCES AND PREUSSAG EXERSISE NAMOSI

  • Deposit

    OPTIONS, 3/25/78, P.10.

  • Deposit

    SKILLINGS, PREUSSAG BECOMES PARTICIPANT IN FIJI COPPER

  • Deposit

    EXPLORATION, 1/8/77, P.34.

  • Deposit

    LEGGO, M. D., CONTRASTING GEOCHEMICAL EXPRESSIONS OF COPPER

  • Deposit

    MINERALIZATION AT NAMOSI, FIJI, JOURNAL OF GEOCHEMICAL

  • Deposit

    EXPLORATION, 1977, PP. 431-456.

  • Deposit

    AMAX INC., PRESS RELEASE, 12/16/76, 2PP.

  • Deposit

    WORLD MINING, 2/77, P.77,78.

  • Deposit

    MINING JOURNAL, 9/9/77, P. 197.

  • Deposit

    MACCALLUM, ALAN, VISIT REPORT, 3/28/80, 1PP.

  • Deposit

    WORLD MINING, 11/77, P. 102.

  • Deposit

    SKILLINGS', 9/17/77, P.6.

  • Deposit

    CANADIAN MINING JOURNAL, 10/77, P.76.

  • Deposit

    MINING MAGAZINE, 3/80, P.275.

  • Deposit

    AMAX INC., PRESS RELEASE, 3/3/78.

  • Deposit

    CONZINC RIOTINTO OF AUSTRALIA LTD., PRESS RELEASE, 3/3/78.

  • Deposit

    RIO TINTO ZINC CORP. LTD., PRESS RELEASE, 1/26/79.

  • Deposit

    RIO TINTO ZINC CORP. LTD., PRESS RELEASE, 9/12/79.

  • Deposit

    CONZINC RIOTINTO OF AUSTRALIA LTD., PRESS RELEASE, 1/24/80

  • Deposit

    RIO TINTO ZINC CORP. LTD., PRESS RELEASE, 1/24/80.

  • Deposit

    WESTERN MINER, 3/83, P.9,10.

  • Deposit

    MINING JOURNAL, 1/24/92, P. 56

  • Deposit

    ENGINEERING AND MINING JOURNAL, 5/92, P. 9.

  • Deposit

    MINING JOURNAL, 3/27/92, P.218.

  • Deposit

    SOUTH-EAST ASIA MINING LETTER, 10/29/93, P.2.

  • Deposit

    SOUTH-EAST ASIA MINING LETTER, 5/13/94, P.4.

  • Deposit

    MINING JOURNAL, 10/9/92, P. 252.

  • Deposit

    SOUTH-EAST ASIA MINING LETTER, 5/14/93, P.2.

  • Deposit

    SOUTH-EAST ASIA MINING LETTER, V 7/N 2, 1/27/95, P.2.

  • Deposit

    ANDREW, R.L., PORPHYRY COPPER-GOLD DEPOSITS OF THE SOUTH-

  • Deposit

    WEST PACIFIC, MINING ENGINEERING, 1/95, P.33-38.

Reporter information

Type Date Name Affiliation Comment
Reporter 09-JAN-95 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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