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

Linden

Producer in Guyana with commodity Aluminum
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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. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Production statistics
  15. Reserves and resources
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10279669
MAS/MILS ID 3120000048
Record type Site
Current site name Linden
Alternate or previous names East Montgomery North, East Montgomery, Kara Kara, North Dorabece

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -58.74931, 5.96797 (WGS84)
Elevation 48
Location accuracy 5000(meters)

Site location context

Political divisions (FIPS codes)

Guyana(country)

South America(continent)

Land(continent)

Geographic areas

Country
Guyana

Commodities

Commodity Importance
Aluminum Critical Primary

Materials information

Materials Type of material
Gibbsite Unknown

Nearby scientific data

Ore Body (1) -58.74931, 5.96797
ListMap

Economic information

Ore body information

  • Thickness 10.5M
    Length 2147M
    Width 920M
    Depth to top 46M
    Field Value
    MAS Matrix # 1
    MAS Column # 3
    Type of Orebody #1 LATERITE
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 OTHER
    Primary mode of Origin OXIDATION
    Secondary mode of Origin OTHER
    Primary Ore Control LITHOLOGY
    Secondary Ore Control OTHER
    Degree of Wallrock Alter. NONE
    Minimum Depth to Top 40
    Avg. Thick. Unconsol. Mat. 46
    Min. Thick. Unconsol. Mat. 40
    Date of Last Modification 900521
  • Area 3000HA
    Field Value
    Total Surface Area (HA) 3000
    Date of Last Modification 910418

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Metallic
Significant Yes
Discovery year 1910
Year of first production 1917
Milling method Pyrometallurgy Unspecified

Mining district

District name Demerara River Area

Mineral rights holdings

Type of mineral rights State Lease
Type of mineral rights Minerals Only

Land status

Ownership category State

Ownership information

  • Type Owner-Operator
    Owner Linmine/Alcan
    Interest 100
    Home office Guyana
    Year 1995

Comments on the ownership information

  • GUYANA MINING ENTERPRISE (GUYMINE) IS STATE CONTROLLED. IT WAS FORMED BY THE MERGER OF GUYANA BAUXITE CO. AND THE BERBICE MINING ENTERPRISE IN 1977. IT IS OWNED BY THE BAUXITE INDUSTRY DEVELOPMENT CORP., (BIDCO).

Production statistics

  • Year 1983
    Description Bauxite Ore 2000 Mt Ore Per Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 2000mt
  • Year 1984
    Description Bauxite Ore 2080 Mt Ore Per Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 2080mt
  • Year 1985
    Description Bauxite Ore 2200 Mt Ore Per Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 2200mt
  • Year 1986
    Description Bauxite Ore 2080 Mt Ore Per Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Aluminum Aluminum 2080mt

Comments on the production information

  • FOUR BAUXITE PRODUCTS ARE PRODUCED; METALURGICAL,REFRACTORY, CHEMICAL,ABRASIVE. ONLY THE METALURGICAL GRADE BAUXITE GRADE BAUXITE PRODUCT IS EVALUATED.

Reserves and resources

  • Type In-situ
    Estimate year 1981
    Indicated 30500000mt ore
    Demonstrated 30500000mt ore
    Total resources 30500000mt ore
    Commodity Subtype Grade units Group Importance Year
    Aluminum Al2O3 65 wt-pct Aluminum Major 1981

Comments on the reserve resource information

  • PRESENT OPERATIONS INCLUDE THE EAST MONTGOMERY, KARA KARA, AND DORABECE PITS. RESERVES ALSO INCLUDE FUTURE PIT SITES EAST MONTGONERY NORTH AND NORTHEAST KARAKARA. OPERATOR IS GUYANA MINING ENTERPRISE LTD (GUYMINE). MANAGEMENT OF THE BAUXITE INDUSTRY HAS BEEN TAKEN OVER BY MINPROC ENGINEERING OF AUSTRALIA IN 1992. FUNDING FOR CONTINUED MINING IS BEING SOUGHT.
  • M1C1=M9C4. GOLDERS, EAST MONTGOMERY DEPOSIT REPORT, 1981, PAGE 6 RESOURCES/RESERVES EVALUATION SECTION, AND NOTES ON COSTING. THE 30.5 MMT IS THE PUBLISHED TONNAGE OF RECOVERABLE CALCINED BAUXITE. ESTIMATED BAUXITE RESERVES AS OF JAN 1987, BASED ON COMPANY SUPPLIED DATA IS REPORTED IN QM1,COL3 AND QM9,COL6. THIS ESTIMATE IS FOR BOTH INSITU AND RECOVERABLE BAUXITE ORE. QM1COL3=QM9COL6
  • REPORTED RESERVES AT EAST MONTGOMERY ARE 100 MILLION MT. REPORTED RESERVES AT KARA KARA ARE ONE YR PRODUCTION RESERVES OF 1 MILLION MT. REPORTED RESERVES AT NORTH DORABECE ARE 2 YR PRODUCTION RESERVE OF 500,000 MTPY OR 1,000,000 MT.

Workings at the site

  • Type of workings Surface
    Area 3000HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Avg. Overburden Thickness 46
    Primary Material Cover SAND, SILT
    Percentage 50
    Secondary Material Cover SAND, GRAVEL
    Percentage 50
    Hardness of Ore SAND, SILT
    Avg. Bench Height (meters) 10
    Max. Pit Slope (degrees) 25
    Capacity 10769
    Capacity Units MT ORE/DAY
    Operating Days per Year 260
    Operating Shifts per Day 3
    Year of Information 1987

Comments on other economic factors

  • THIS OPERATION CONSITS OF 3 MINING AREAS, A 4TH AREA IS BEING DEVELOPED.

Reference information

Bibliographic references

  • Reserve-Resource

    ENGINEERING AND MINING JOURNAL, NOV. 1977.

  • Reserve-Resource

    MINING ANNUAL REVIEW, 1980.

  • Reserve-Resource

    EAST MONTGOMERY REPORT PROFILE, GOLDER ASSOC. 1981, P6.

  • Reserve-Resource

    MINING MAGAZINE. JAN. 1992.

  • Deposit

    BLEACKLEY, D. 1964. BAUXITES AND LATERITES OF BRITISH GUIANA

  • Deposit

    GEOLOGICAL SURVEY OF BRITISH GUIANA, BULL. NO. 34.

  • Deposit

    VELASQUEZ, JOSE DARIO H., 1972. LIMITS OF ECONOMIC FEASIBILI

  • Deposit

    BAUXITE IN WESTERN COLUMBIA. THESIS DEPT. OF MINERAL ECONOMI

  • Deposit

    COLO. SCHOOL OF MINES, GOLDEN. GEN. INFO. APPL. TO GUIANA MI

  • Deposit

    MINE AND QUARRY ENGINEERING, JUNE 1958, PP234-241.

  • Deposit

    WORLD MINING, OCTOBER 1975, PP38-41.

  • Deposit

    ENGINEERING AND MINING JOURNAL, NOVEMBER 1977, PP69-71.

  • Deposit

    ENGINEERING AND MINING JOURNAL, AUGUST 1979, P145.

  • Deposit

    EMJ CATALOG,SURVEY AND DIRECTORY, 1979, PP141-142.

  • Deposit

    EMJ CATALOG,SURVEY AND DIRECTORY, 1980, P183.

  • Deposit

    MINING ANNUAL REVIEW, 1980, P62.

  • Deposit

    MINING MAGAZINE, JUNE 1980, PP511-512.

  • Deposit

    BISHOPP, D.W., 1937, BULLT.#8,"GEOLOGICAL SURVEY OF BRITISH

  • Deposit

    GUIANA", PP2-3.

  • Deposit

    BISHOPP, D.W., 1954, BULLT.#26,"GEOLOGICAL SURVEY OF BRITISH

  • Deposit

    GUIANA

  • Deposit

    HOSE, H.R. 1959, PROCEEDINGS, FIFTH INTER-GUIANA CONFERENCE,

  • Deposit

    GORGETOWN. PP186-189.

  • Deposit

    LEFOND, S.J. 1975, 4TH ED, SOCIEITY OF MINING ENGIEERS OF

  • Deposit

    AIME, PP445-459.

General comments

Subject category Comment text
Deposit PREVIOUS ALUMINUM STUDY, 1981 EVALUATION, DATA BASED ON GOLDERS DEPOSIT PROFILE REPORT, 1981. 1987 ALUMINUM STUDY, UPDATED EVALUATION JAN. 1989. BAUXITE ORE FROM EACH MINE AREA IS TRANSPORTED TO A COMMON STOCKPILE. FROM THEIR THE ORE IS TRANSPORTED BY TRAIN 12 KM TO THE OFF SITE MILL, WHERE IT IS WASHED AND DRIED. AT THIS POINT THE ORE IS READY FOR SHIPPMENT TO A REFINERY.

Reporter information

Type Date Name Affiliation Comment
Reporter 26-SEP-96 Wilburn, David R. 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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