1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Pt Koba Tin Bangka Island

Plant in Indonesia with commodity Tin
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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. Ownership information
  11. Production statistics
  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 10303858
MRDS ID DE00201
MAS/MILS ID 5600130002
Record type Site
Current site name Pt Koba Tin Bangka Island
Alternate or previous names P.T. Koba Tin, Koba, Koba Bangka
Related records 10021526

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 106.39966, -2.58145 (WGS84)

Site location context

Political divisions (FIPS codes)

Indonesia(country)

Asia(continent)

Land(continent)

Geographic areas

Country
Indonesia

Commodities

Commodity Importance
Tin Critical Primary

Materials information

Materials Type of material
Cassiterite Unknown
Ilmenite Unknown
Monazite Unknown

Nearby scientific data

Ore Body (1) 106.39966, -2.58145
ListMap

Economic information

Ore body information

  • Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 PLACER
    Shape of Orebody #1 IRREGULAR
    Primary mode of Origin RESIDUAL CONCENT
    Primary Ore Control LITHOLOGY
    Avg. Thick. Unconsol. Mat. 6
    Date of Last Modification 860829

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Significant Yes
Mining method Hydraulicking
Year of first production 1974
Plant type Beneficiation (Mill)
Plant subcategory Gravity
Milling method Gravity

Ownership information

  • Type Owner
    Owner Kajuara Mining Corp. Ltd.
    Interest 75
    Year 1983
  • Type Owner
    Owner P. T. Tambang Timah
    Interest 25
    Year 1983
  • Type Owner
    Owner Rensison Goldfields
    Interest 75
    Home office Australia
    Year 1990

Comments on the ownership information

  • P.T. KOBA TIN OPERATES ON BANGKA ISLAND, INDONESIA, UNDER A LEASE GRANTED IN 1971 BY THE INDONESIA GOVERNMENT. IN 1988 KOBA SHARES OWN BY KAJUARA MINING WERE BOUGHT BY THE THE AUSTRALIAN TIN MINER RENISON.

Production statistics

  • Year 1973
    Description Units Treated 488000 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 488000mt
  • Year 1974
    Description Units Treated 1940000 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 1940000mt
  • Year 1975
    Description Units Treated 2815000 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 2815000mt
  • Year 1976
    Description Units Treated 3281000 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 3281000mt
  • Year 1977
    Description Units Treated 5138000 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 5138000mt
  • Year 1978
    Description Units Treated 9300000 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 9300000mt
  • Year 1979
    Description Units Treated 12137000 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 1213700mt
  • Year 1980
    Description Units Treated 16800000 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 1680000mt
  • Year 1981
    Description Units Treated 21000000 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 2100000mt
  • Year 1984
    Period 1982-1984
    Description Units Treated/Yr 1982-1984 20400000 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 2040000mt
  • Year 1985
    Description Units Treated 11640000 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 1164000mt
  • Year 1986
    Description Units Treated 11508800 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 1150880mt
  • Year 1987
    Description Units Treated 13227200 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 1322720mt
  • Year 1988
    Description Units Treated 16292800 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 1629280mt
  • Year 1997
    Period 1989-1997
    Description Units Treated/Yr 1989-1997 23600000 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 2360000mt
  • Year 1998
    Description Units Treated/Yr 1998 15703280 Mt Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Tin Tin 1570328mt

Comments on the production information

  • A $151.80 SMELTING COST AND A $0.45 MILLING COST PER TONNE ARE INCURRED IN THE PRODUCTION OF PRODUCT A.

Reserves and resources

  • Type In-situ
    Estimate year 1982
    Measured 96000000mt ore
    Indicated 84000000mt ore
    Demonstrated 180000000mt ore
    Total resources 180000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tin Sn 0.04 wt-pct Tin Major 1982
  • Type In-situ
    Estimate year 1989
    Measured 66000mt commodity
    Demonstrated 66000mt commodity
    Total resources 66000mt commodity
    Commodity Subtype Grade units Group Importance Year
    Tin Sn 0.028 wt-pct Tin Major 1989

Comments on the reserve resource information

  • ALLUVIAL TIN MINING USING 1 DREDGE, GRAVEL PUMPS, AND DRY MINING

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method HYDRAULICKING
    Primary Material Cover SAND, GRAVEL
    Hardness of Ore SAND, GRAVEL
    Capacity 56700
    Capacity Units MT ORE/DAY
    Unit Production Cost .85
    Units of Production $/MT ORE
    Operating Days per Year 360
    Operating Shifts per Day 3
    Year of Information 1983
  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method ACTUAL
    Mining Method HYDRAULICKING
    Primary Material Cover SAND, GRAVEL
    Hardness of Ore SAND, GRAVEL
    Capacity 78700
    Capacity Units MT ORE/DAY
    Unit Production Cost .66
    Units of Production $/MT ORE
    Operating Days per Year 300
    Operating Shifts per Day 3
    Year of Information 1989

Comments on other economic factors

  • ALL TIN CONCENTRATES ARE SOLD TO THE INDONESIAN NATIONAL TIN COMPANY TO BE SMELTED AT THEIR PELTIM SMELTER UNIT AT MENTOK.

Reference information

Bibliographic references

  • Production

    SOUTH-EAST ASIA MINING LETTER-SAML, P. 6 (JAN. 14, 1994).

  • Deposit

    MINING ANNUAL REVIEW LONDON, 1970-1982.

  • Deposit

    WORLD MINING, JANUARY, 1977, PP 50.

  • Deposit

    MINING INTERNATIONAL YEAR BOOK, FINANCIAL TIMES, LONDON,

  • Deposit

    ENGLAND, 1981.

  • Deposit

    INTERNATIONAL TIN COUNCIL LISTING, 1982.

  • Deposit

    BUKU STATISTIK, P.T. TAMBANG TIMAH (PERSERO), 1980.

  • Deposit

    AUSTRALIAN MINERAL ECONOMICS PTY., THE WORLD TIN INDUSTRY

  • Deposit

    SUPPLY AND DEMAND, SEPTEMBER, 1980.

  • Deposit

    INTERNATIONAL TIN COUNCIL, TIN PRODUCTION AND DEVELOPMENT

  • Deposit

    1979.

  • Deposit

    INTERNATIONAL TIN COUNCIL, REPORTS OCTOBER 1982, 1979.

  • Deposit

    U.S. DEPARTMENT OF COMMERCE, MINERALS YEARBOOK, 1978-79,

  • Deposit

    PP 928.

  • Deposit

    HARYANTO, R., DEVELOPMENT OF TIN ORE TREATMENT AT P.T. KOBA

  • Deposit

    TIN, SEMINAR ON BENEFICIATION OF TIN AND ASSOCIATED

  • Deposit

    MINERALS, SEATRAD CENTRE, IPOH, MALAYSIA.

  • Deposit

    INTERNATIONAL TIN COUNCIL, COMMITTEE ON DEVELOPMENT, REPORT

  • Deposit

    NO. 26-10, JUNE, 1977, 2 P.

Reporter information

Type Date Name Affiliation Comment
Reporter 19-MAR-1996 Sabin, A. 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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