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

Port Loko

Prospect in Sierra Leone 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. Nearby scientific data
  7. Ore body information
  8. Economic information about the deposit and operations
  9. Mining district
  10. Ownership information
  11. Reserves and resources
  12. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10142113
MAS/MILS ID 7470100002
Record type Site
Current site name Port Loko

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -12.7486, 8.75099 (WGS84)
Location accuracy 5000(meters)

Site location context

Political divisions (FIPS codes)

Sierra Leone(country)

Geographic areas

Country
Sierra Leone

Commodities

Commodity Importance
Aluminum Critical Primary

Nearby scientific data

Ore Body (1) -12.7486, 8.75099
ListMap

Economic information

Ore body information

  • Field Value
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 UNKNOWN
    Primary mode of Origin SEDIMENTATION
    Secondary mode of Origin EVAPORATION
    Primary Ore Control LITHOLOGY
    Secondary Ore Control FAULTING
    Date of Last Modification 830622

Economic information about the deposit and operations

Operation type Surface
Development status Prospect
Commodity type Metallic
Significant No
Discovery year 1970

Mining district

District name Port Loko

Ownership information

  • Type Owner
    Owner Sierra Leone Government
    Interest 50
    Year 1981
  • Type Owner
    Owner Suisse Aluminum Ltd. (Alusuisse)
    Interest 50
    Home office Switzerland
    Year 1981
  • Type Operator
    Owner Sierra Ore And Metal Co., Ltd. (Sieromco)
    Home office Sierra Leone
    Year 1981

Comments on the ownership information

  • SIERRA LEONE GOVT. ANNOUNCED IN 1976 THAT SIERRA LEONE ORE AND METAL CO. (100% ALUSUISSE SUBSIDIARY) HAS OFFERED THE GOVT. A MAJORITY PARTNERSHIP IN PROJECT.

Reserves and resources

  • Type In-situ
    Estimate year 1976
    Indicated 60000000mt ore
    Demonstrated 60000000mt ore
    Total resources 60000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Aluminum Al2O3 50 wt-pct Aluminum Major 1976

Comments on the reserve resource information

  • PLANS FOR PROPOSED MINE AND REFINERY BY GOVT. AND ALUSUISSE HAVE BEEN SHELVED OR INDEFINITELY POSTPONED. NO RESERVE TONNAGE OR GRADE GIVEN.

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Capacity 5333
    Capacity Units MT ORE/DAY
    Unit Production Cost 5.6
    Units of Production $/MT ORE
    Operating Days per Year 300
    Year of Information 1981

Comments on the workings information

  • THIN FORESTS AND GRASSLANDS VEGETATION. COASTAL PLAIN TOPOGRAPHY.

Reference information

Bibliographic references

  • Reserve-Resource

    MINERALS YEARBOOK, 1976, P. 920.

  • Reserve-Resource

    MINERALS YEARBOOK, 1978-79, VOL. III, AREA REPORTS: INTER-

  • Reserve-Resource

    NATIONAL, U.S. DEPT. OF THE INTERIOR, P. 821.

  • Deposit

    DE KUN, NICOLAS. "THE MINERAL RESOURCES OF AFRICA",

  • Deposit

    COLUMBIA UNIVERSITY, N.Y., PP. 301-302.

  • Deposit

    MINING MAGAZINE, APRIL,1976.

  • Deposit

    DMA MAP SERIES 1501, SHEET NC 28-16, SCALE 1:250000.

  • Deposit

    "ECONOMIC STRUCTURES AND DEVELOPMENT PROBLEMS: SIERRA LEONE"

  • Deposit

    APRIL 1975, PP. 31-32.

  • Deposit

    LLOYDS BANK. SIERRA LEONE, 1979.

  • Deposit

    METALS SOURCEBOOK, ITEM B3202, JUNE 24, 1974.

  • Deposit

    MINING ANNUAL REVIEW, "SIERRA LEONE." 1979, P. 43.

  • Deposit

    MINING MAGAZINE, APRIL 1976.

  • Deposit

    MOREL, S.W., "THE GEOLOGY AND MINERALS OF SIERRA LEONE",

  • Deposit

    UNIVERSITY OF SIERRA LEONE, FREETOWN, APRIL 1976, P. 9.

  • Deposit

    UNITED NATIONS, NON-FERROUS METALS, N.Y., 1972, PP. 85-86.

  • Deposit

    WORLD MINING CATALOG, SURVEY, AND DIRECTORY, SAN FRANCISCO,

  • Deposit

    JULY 1979, P. 180.

General comments

Subject category Comment text
Deposit 300 OPERATING DAY/YR ESTIMATED PLANS CALL FOR CONSTRUCTION OF ALUMINA REFINERY AT PORT LOKO OR PEPEL.

Reporter information

Type Date Name Affiliation Comment
Reporter 23-DEC-94 Eastern Field Operations Center (EFOC) 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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