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  3. Mineral Resource Data System (MRDS)

Bogala Mine

Producer in Sri Lanka with commodity Graphite
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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. Mineral rights holdings
  11. Land status
  12. Ownership information
  13. Production statistics
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10280079
MAS/MILS ID 5420000002
Record type Site
Current site name Bogala Mine
Alternate or previous names Bogala

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 80.31702, 7.13418 (WGS84)
Elevation 170
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

Sri Lanka(country)

Federal lands

Federal(land status)

Geographic areas

Country
Sri Lanka

Commodities

Commodity Importance
Graphite Critical Primary

Materials information

Materials Type of material
Calcite Unknown
Graphite Unknown
Quartz Unknown

Nearby scientific data

Ore Body (1) 80.31702, 7.13418
ListMap

Economic information

Ore body information

  • Thickness 110M
    Length 160M
    Width 0.5M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 IRREGULAR
    Primary mode of Origin UNKNOWN
    Primary Ore Control FRACTURING
    Degree of Wallrock Alter. UNKNOWN
    Date of Last Modification 851030
  • Area 7.9HA
    Field Value
    Total Surface Area (HA) 7.9
    Date of Last Modification 910418

Comments on the geologic information

  • SRI LANKAN GRAPHITE DEPOSITS ARE UNIQUE IN THAT THEY CONSIST OF STEEPLY DIPPING VEINS OF REMARKABLY HIGH-GRADE GRAPHITE. GRADES VARY FROM 92 TO 95 PERCENT CARBON. COUNTRY ROCKS INCLUDE QUARTZITE, LIMESTONE, DOLOMITE, SCHIST, GRANULITE, GNEISS, AND CHARNOCKITE. THE NUMBER OF VEINS IN A DEPOSIT VARIES FROM 2 OR 3 UP TO OVER 100. THE GRAPHITE AT K-K, UNLIKE THE OTHER DEPOSITS, HAS A NEEDLE-LIKE HABIT. DIMENSIONS GIVEN ARE FOR A TYPICAL VEIN. THREE VEINS ARE MINED AT BOGALA.

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Non-metallic
Significant Yes
Discovery year 1675
Year of first production 1821
Milling method Sizing

Mineral rights holdings

Type of mineral rights Federal Lease

Land status

Ownership category Federal

Ownership information

  • Type Owner-Operator
    Owner Sri Lanka State Mining And Minerals Devel. Corp. (Smmdc)
    Interest 100
    Home office Sri Lanka
    Year 1983

Production statistics

  • Year 1967
    Description Production Figures Prior To 1976 Are 6000 Mt Ore (Diluted)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 6000mt
  • Year 1968
    Accuracy Estimate
    Description Estimates. Ore Tonnages Are Calculated 6000 Mt Ore (Diluted)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Graphite Graphite 6000mt
  • Year 1969
    Description From Product Tonnages Using A 1.2:1 6000 Mt Ore (Diluted)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Graphite Graphite 6000mt
  • Year 1970
    Description Ore:Product Ratio. 6000 Mt Ore (Diluted)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Graphite Graphite 6000mt
  • Year 1971
    Description 6000 Mt Ore (Diluted)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Graphite Graphite 6000mt
  • Year 1972
    Description 6000 Mt Ore (Diluted)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Graphite Graphite 6000mt
  • Year 1973
    Description 6000 Mt Ore (Diluted)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Graphite Graphite 6000mt
  • Year 1974
    Description 6000 Mt Ore (Diluted)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Graphite Graphite 6000mt
  • Year 1975
    Description 6000 Mt Ore (Diluted)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Graphite Graphite 6000mt
  • Year 1976
    Description 6038 Mt Ore (Diluted)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Graphite Graphite 6038mt
  • Year 1977
    Description 6194 Mt Ore (Diluted)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Graphite Graphite 6194mt
  • Year 1978
    Description 8575 Mt Ore (Diluted)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Graphite Graphite 8575mt
  • Year 1979
    Description 7225 Mt Ore (Diluted)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Graphite Graphite 7225mt
  • Year 1980
    Description 4763 Mt Ore (Diluted)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Graphite Graphite 4763mt
  • Year 1981
    Description 4198 Mt Ore (Diluted)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Graphite Graphite 4198mt
  • Year 1982
    Description 4951 Mt Ore (Diluted)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Graphite Graphite 4951mt

Comments on the production information

  • MILL RECOVERY IS ACTUALLY 90.9%.

Comments on the reserve resource information

  • M1C1=M9C4. GRADES SHOWN IN THE QA DATA SET ARE WEIGHT-PERCENT CARBON. MINE RECOVERY = 100%. DILUTION = 10%. DILUTED, RECOVERABLE RESOURCE = 60,259 MT AT 83.6% CARBON (75% PROB.).
  • NATURAL GRAPHITE WITH SPECIAL REFERENCE TO THE GEOLOGY, MINING, AND PROCESSING AT BOGALA MINES,SRI LANKA, K.D.J.JAYATIEKE, 1979

Workings at the site

  • Type of workings Underground
    Length 2000M
    Overall depth 188M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method HORIZ CUT & FILL W/WASTE ROCK 10-60
    Swell Factor .6
    Percent Recovery 100
    Hardness of Rock UNKNOWN
    Rock Characteristics UNKNOWN
    Rock Support Chars. SUPPORTING
    Mine Support Chars. TIMBER
    Number of Shafts 2
    1st Condition of Workings OPEN
    Capacity 23.9
    Capacity Units MT ORE/DAY
    Unit Production Cost 120.9
    Units of Production $/MT ORE
    Operating Days per Year 275
    Operating Shifts per Day 2
    Year of Information 1983

Reference information

Bibliographic references

  • Deposit

    ANON MINING GRAPHITE IN SRI LANKA ;FROM SMMDC FILES

  • Deposit

    BASTIN THE GRAPHITE OF CEYLON ECONOMIC GEOLOGY VOL 7 #5

  • Deposit

    AUGUST 1912.

  • Deposit

    JAYATILEKE KOJ NATURAL GRAPHITE WITH SPECIAL REFERENCE TO

  • Deposit

    THE GEOLOGY AND PROCESSING AT BAGALA MINES. SRI LANKA

  • Deposit

    TECHNICAL PAPER PRESENTED IN YUGOSLAVIA 1979.

  • Deposit

    KENDALL HM ET AL INTRODUCTION TO PHYSICAL GEOGRAPHY SECOND

  • Deposit

    EDITION 1974.

  • Deposit

    SMMDC COMPANY PRODUCT BROCHURE NO DATE.

  • Deposit

    IFS FINANCIAL TABLES

Reporter information

Type Date Name Affiliation Comment
Reporter 20-APR-95 Z&W Inc 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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