Bomi Hills

Producer in Montserrado, Liberia with commodity Iron
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. Workings at the site
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10158995
MAS/MILS ID 7650350001
Record type Site
Current site name Bomi Hills

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -10.82859, 6.90111 (WGS84)
Elevation 500
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

Montserrado(province)

Liberia(country)

Geographic areas

Country State
Liberia Montserrado

Commodities

Commodity Importance
Iron Tertiary

Materials information

Materials Type of material
Corundum Unknown
Hematite Unknown
Magnetite Unknown
Quartz Unknown
Rutile Unknown

Nearby scientific data

Ore Body (1) -10.82859, 6.90111

Economic information

Ore body information

  • Strike S45E
    Dip 75N
    Length 2400M
    Width 610M
    Depth to top 80M
    Field Value
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 REPLACEMENT
    Type of Orebody #3 OTHER
    Primary mode of Origin SEDIMENTATION
    Secondary mode of Origin HYDROTHERMAL
    Primary Ore Control BEDDING
    Secondary Ore Control CONTACT ZONE
    Degree of Wallrock Alter. NONE
    Type of Wallrock Alter. #1 OTHER
    Type of Wallrock Alter. #2 CARBONATE SILIC
    Strike And Dip S45E:75N
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 3
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 780615

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Metallic
Significant No
Discovery year 1930
Year of first production 1951

Ownership information

  • Type Operator
    Owner Liberia Mining Co. Ltd
    Home office Liberia
    Year 1975
  • Type Owner
    Owner Republic Steel Corp.
    Year 1975
  • Type Owner
    Owner Liberian Government
    Interest 50
    Home office Liberia
    Year 1975

Workings at the site

  • Type of workings Surface
    Area 46HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method STRIP-HILLSIDE
    Avg. Overburden Thickness 100
    Primary Material Cover HARDPAN
    Percentage 20
    Secondary Material Cover HARD ROCKS
    Percentage 60
    Tertiary Material Cover M-HARD ROCKS
    Percentage 20
    Hardness of Ore HARD ROCKS
    Capacity 4081
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE
    Year of Information 1975

Reference information

Bibliographic references

  • Deposit

    GRUSS,H.,1973,ITABIRITE IRON ORES OF THE LIBERIA AND GUYANA

  • Deposit

    IN-GENESIS OF PRECAMBBIAN IRON AND MANGANESE DEPOSITS, UNES

  • Deposit

    EARTH SCI. SER., NO. 9, P.335-359

  • Deposit

    LEFEVRE, BERNARD, JR., 1966, A REPORT OF THE GEOLOGY AND MIN

  • Deposit

    PROCEDURES AT BOMI HILL, LIBERIA: GEOL. SOC. LIBERIA, BUL

  • Deposit

    FITZHUGH, JR.,1953, IRON ORE AT BOMI HILL, LIBERIA: ECON. GE

  • Deposit

    V.48, P.431-436.

  • Deposit

    SURVEY OF WORLD IRON ORE RESOURCES, 1970, UNITED NATIONS, N.

  • Deposit

    BERGE, JOHN W., 1970, IMPLICATIONS OF PHOSPHOROUS FIXATION D

  • Deposit

    CHEMICAL WEATHERING IN THE GENESIS OF SUPER-GENE IRON ORE

  • Deposit

    SOC. LIBERIA, BULL., V4, P.33-43.

  • Deposit

    DEKUN, NICOLAS, 1965, THE MINERAL RESORCES OF AFRICA: ELSEVI

  • Deposit

    CO., NEW YORK, 740P.

  • Deposit

    MINING ANNUAL REVIEW, 1974, MINING J., LONDON, P.73.

  • Deposit

    MINING MAGAZINE, 1967, MINING J., LONDON, V 117, P.332.

  • Deposit

    METALS SOURCEBOOK 7/15/74 ITEM (B3425)

General comments

Subject category Comment text
Deposit 5-8-75,ORE IS SHIPED TO BOTH THE US AND EUROPE,BUT THE PERCE EACH IS NOT KNOWN. EXCESS OVERBURDEN IS THE LIMITING FACTOR IN RECOVERING THE R 1974-BOMI HILLS IS NEARING DEPLETION WITH OUTPUT DOWN FROM 2 ION MT IN 1972 TO 2.35 MILLION MTIN 1973.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-84 Unknown U.S. Bureau of Mines

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.