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  3. Mineral Resource Data System (MRDS)

King Island Mines

Plant in Tasmania, Australia with commodity Tungsten
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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 10305016
MAS/MILS ID 6020450005
Record type Site
Current site name King Island Mines
Alternate or previous names Dolphin Mine, Bold Head Mine

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 143.99855, -40.07939 (WGS84)
Elevation 0
Location accuracy 10000(meters)

Site location context

Political divisions (FIPS codes)

Tasmania(province)

Australia(country)

Australia(continent)

Land(continent)

Geographic areas

Country State
Australia Tasmania

Commodities

Commodity Importance
Tungsten Critical Primary

Materials information

Materials Type of material
Andradite Unknown
Epidote Unknown
Molybdenite Unknown
Quartz Unknown
Scheelite Unknown

Nearby scientific data

Ore Body (1) 143.99855, -40.07939
ListMap

Economic information

Ore body information

  • Strike N90W
    Dip 50S
    Thickness 210M
    Length 500M
    Width 60M
    Field Value
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 TABULAR
    Shape of Orebody #2 LENTICULAR
    Shape of Orebody #3 IRREGULAR
    Primary mode of Origin CONT METASOMATIC
    Primary Ore Control LITHOLOGY
    Secondary Ore Control BEDDING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONATE SILIC
    Strike And Dip N90W:50S
    Minimum Depth to Top 20
    Date of Last Modification 780213

Economic information about the deposit and operations

Operation type Underground
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1911
Mining method Open Stope - Room and Pillar
Year of first production 1917
Plant type Beneficiation (Mill)
Plant subcategory Flotation
Milling method Flotation

Mining district

District name King Island

Ownership information

  • Type Operator
    Owner King Island Scheelite Ltd
    Interest 100
    Home office Australia
    Year 1982
  • Type Owner
    Owner Peko-Wallsend Invest. Ltd.
    Interest 100
    Home office Australia
    Year 1982

Comments on the ownership information

  • KING ISLAND SCHEELITE LTD IS NOW A WHOLLY OWNED SUBSIDIARY OF PEKO-WALLSEND LTD.

Comments on the production information

  • FLOTATION CONC. GOES TO THE ARTIFICIAL SCHEELITE PLANT AT THE MILL SITE.

Reserves and resources

  • Type In-situ
    Estimate year 1986
    Measured 3200000mt ore
    Indicated 1700000mt ore
    Demonstrated 4900000mt ore
    Total resources 4900000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tungsten Wo3 1.04 wt-pct Tungsten Major 1986
  • Type In-situ
    Estimate year 1986
    Measured 800000mt ore
    Indicated 450000mt ore
    Demonstrated 1250000mt ore
    Total resources 1250000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tungsten Wo3 0.88 wt-pct Tungsten Major 1986
  • Type In-situ
    Estimate year 1970
    Measured 1900000mt ore
    Indicated 900000mt ore
    Demonstrated 2800000mt ore
    Total resources 2800000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tungsten Wo3 0.52 wt-pct Tungsten Major 1970
  • Type In-situ
    Estimate year 1968
    Measured 6000000mt ore
    Demonstrated 6000000mt ore
    Total resources 6000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tungsten Wo3 0.8 wt-pct Tungsten Major 1968

Comments on the reserve resource information

  • BOLD-HEAD + DOLPHIN WERE FORMERLY PART OF THE DEPOSIT NAME. OTHER OWNERS: PEKO WALLSEND INV. RESOURCES AS OF 1/83 WHOLLY OWNED SUBSIDIARY OF PEKO-WALLSEND LTD

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Mining Method OTHER FILLED STOPE METHODS
    Percent Recovery 78
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING WHEN DRY
    Mine Support Chars. OPEN STEEL SETS
    Length of Inclines (m) 300
    Number of Inclines 1
    1st Condition of Workings OPEN
    Capacity 1220
    Capacity Units MT ORE/DAY
    Unit Production Cost 19.32
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1982
  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Mining Method HORIZ CUT & FILL W/WASTE ROCK 10-60
    Percent Recovery 78
    1st Condition of Workings OPEN
    Capacity 460
    Capacity Units MT ORE/DAY
    Unit Production Cost 19.32
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1982

Comments on the workings information

  • THE KING ISLAND SHEELITE MINE WAS PERMANENTLY CLOSED AT THE END OF NOVEMBER 1990, DUE TO DEPRESSED TUNGSTEN PRICES. SITE RECLAMATION INCLUDING THE DISMANTLING OF EXISTING STRUCTURES AND REVEGATATION BEGAN SHORTLY AFTER.

Reference information

Bibliographic references

  • Reserve-Resource

    ROSKILL INFORMATION SERVICES LTD.; THE ECONOMICS OF TUNGSTEN

  • Reserve-Resource

    6'TH ED., 1990. P 29.

  • Reserve-Resource

    ENGINEERING AND MINING JOURNAL, APRIL 1968, P170.

  • Reserve-Resource

    MINING JOURNAL, OCT. 10, 1969, P 326.

  • Deposit

    B.M.R.,AUST.MIN.INDUSTRY,1969-REVIEW.

  • Deposit

    KNIGHT,CL.,ET,AL.,1965,SCHEELITE DEPOSIT OF KING ISLAND:IN,G

  • Deposit

    T.ORE DEPOSITS: 2ND ED.,P515-517,AIMM,MELBOURNE.

  • Deposit

    KNIGHT,CL.,& NYE,P.B.,1953,KING ISLAND SHEELITE MINE:IN,GEOL

  • Deposit

    ORE DEPOSITS,1ST ED.,P1222-1232, AIMM,MELBOURNE.

  • Deposit

    MINING MAG.,1974,P214

  • Deposit

    DANIELSON, M.J., THE KING ISLAND SCHEELITE DEPOSITS, IN

  • Deposit

    KNIGHT, C.E., ED., ECONOMIC GEOLOGY OF AUSTRALIA AND

  • Deposit

    PAPUA NEW GUINEA, MELBOURNE, AIMM, MONO. 5, 1975,

  • Deposit

    P. 592-598.

  • Deposit

    EDWARDS, A.B., BAKER, G., AND CALLOW, K.J., METAMORPHISM

  • Deposit

    AND METASOMATISM AT THE KING ISLAND SCHEELITE MINE:

  • Deposit

    GEOL. SOC. AUSTRALIA, V. 3, 1956, P. 55-98.

  • Deposit

    ROGERS, M., THE KING ISLAND SCHEELITE DEPOSITS, IN GREEN,

  • Deposit

    A.C. AND WILLIAMS, P.R., EDS., GEOLOGY AND

  • Deposit

    MINERALIZATION OF NW TASMANIA: HOBART, GEOL. SOC. OF

  • Deposit

    AUSTRALIA, TASMANIAN DIV., 1978, P. 24-28.

Reporter information

Type Date Name Affiliation Comment
Reporter 16-OCT-96 Gazdik 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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