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Moanda

Producer in Haut-Ogooue, Gabon with commodities Aluminum, Iron, Manganese, Phosphorus-Phosphates, Silica
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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. 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 10183567
MAS/MILS ID 7550300001
Record type Site
Current site name Moanda

Geographic coordinates

Geographic coordinates: 13.18532, -1.56828 (WGS84)
Elevation 600

Site location context

Political divisions (FIPS codes)

Haut-Ogooue(province)

Gabon(country)

Geographic areas

Country State
Gabon Haut-Ogooue

Commodities

Commodity Importance
Aluminum Critical Tertiary
Iron Tertiary
Manganese Critical Secondary
Phosphorus-Phosphates Tertiary
Silica Tertiary

Materials information

Materials Type of material
Goethite Unknown
Kaolinite Unknown
Manganite Unknown
Polianite Unknown
Psilomelane Unknown
Pyrolusite Unknown

Nearby scientific data

(1) 13.18532, -1.56828
ListMap

Economic information

Ore body information

  • Thickness 5M
    Depth to top 4.5M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 REPLACEMENT
    Primary Ore Control BEDDING
    Minimum Depth to Top 3
    Avg. Thick. Unconsol. Mat. 4.5
    Min. Thick. Unconsol. Mat. 3
    Date of Last Modification 871124

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Both
Significant Yes
Discovery year 1944
Year of first production 1962
Milling method Washing

Ownership information

  • Type Operator
    Owner Cie Miniere De L'Ogooue (Comilog)
    Home office France
    Year 1987
  • Type Owner
    Owner USX Corp.
    Interest 44
    Home office Pennsylvania
    Year 1987
  • Type Owner
    Owner Bureau De Recherches Geologiques Et Minieres (BRGM)
    Interest 19
    Home office France
    Year 1987
  • Type Owner
    Owner Cie De Mokta
    Interest 17
    Home office Gabon
    Year 1987
  • Type Owner
    Owner Ste Axiliare De Manganese Du Franceville
    Interest 9
    Home office Gabon
    Year 1987
  • Type Owner
    Owner Republic Of Gabon
    Interest 10
    Home office Gabon
    Year 1987
  • Type Owner
    Owner Private Investers
    Interest 1
    Year 1987

Reserves and resources

  • Type In-situ
    Estimate year 1990
    Indicated 100000000mt ore
    Demonstrated 100000000mt ore
    Total resources 100000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Manganese Mn 48 wt-pct Manganese Minor 1990
    Phosphorus-Phosphates P 0.1 wt-pct Phosphorus Trace 1990
    Iron Fe 4 wt-pct Iron Trace 1990
    Silica SiO2 3 wt-pct Silica Trace 1990
    Aluminum Al2O3 7 wt-pct Aluminum Trace 1990
  • Type In-situ
    Estimate year 1990
    Inferred 260000000mt ore
    Total resources 260000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Manganese Mn 45 wt-pct Manganese Minor 1990
  • Type In-situ
    Estimate year 1990
    Measured 15000000mt ore
    Demonstrated 15000000mt ore
    Total resources 15000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Manganese Mn 45 wt-pct Manganese Minor 1990
    Phosphorus-Phosphates P 0.11 wt-pct Phosphorus Trace 1990
    Iron Fe 3 wt-pct Iron Trace 1990
    Silica SiO2 4 wt-pct Silica Trace 1990
    Aluminum Al2O3 5 wt-pct Aluminum Trace 1990

Comments on the reserve resource information

  • NMAB, 1982 (IDENTIFIED); COMPANY DATA (DEMONSTRATED); UPDATED TO 1/89.

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Percent Waste Rock 50
    Avg. Overburden Thickness 4.5
    Primary Material Cover SAND, SILT
    Secondary Material Cover HARDPAN
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 6.5
    Max. Pit Slope (degrees) 60
    Capacity 14000
    Capacity Units MT ORE/DAY
    Year of Information 1987

Reference information

Bibliographic references

  • Deposit

    ENG. MIN. JOUR. GABON PLANS NEW OFFSHORE PORT FOR IRON ORE

  • Deposit

    AND MANGANESE SHIPMENTS. V. 179, NO. 9, SEPT. 1978,

  • Deposit

    PP. 31-32.

  • Deposit

    ENG. MIN. JOUR. GABONESE ORE FOR JAPAN. V. 185, NO. 5,

  • Deposit

    MAY 1984, P. 39.

  • Deposit

    INDUSTRIAL MINERALS. MANGANESE ORE TERMINAL FOR COMILOG.

  • Deposit

    NO. 231, FEB. 1987, P. 9.

  • Deposit

    INDUSTRIAL MINERALS. MANGANESE IN GABON. NO. 234, MAY 1987,

  • Deposit

    P. 77.

  • Deposit

    INTERNATIONAL COMMERCE. NEW CONGO RAILWAY CARRIES GABON'S

  • Deposit

    MANGANESE TO THE SEA. DEC. 8, 1962, PP. 32-33.

  • Deposit

    METAL BULLETIN. WORLD'S MANGANESE MINES - 2. MOANDA OF

  • Deposit

    GABON. NO. 5503. JUNE 30, 1967, PP. 21-23.

  • Deposit

    METAL BULLETIN. RAIL PROJECT FOR GABON. NO. 5503, JUNE 30,

  • Deposit

    1967, P.32.

  • Deposit

    MINING ANNUAL REVIEWS.

  • Deposit

    MINING JOURNAL. MOANDA MANGANESE MINE IN PRODUCTION.

  • Deposit

    V. 260, NO. 6592, DEC. 7, 1962, PP.539-541.

  • Deposit

    MINING JOURNAL. GABON - MINING DEVELOPS UNDER FIVE-YEAR

  • Deposit

    PLAN. V. 280, NO. 7190, JUNE 8, 1973, P. 469.

  • Deposit

    MINING JOURNAL. GABON'S RAIL INVESTMENT. V. 308, NO. 7900,

  • Deposit

    JAN. 16, 1987, P. 44.

  • Deposit

    MINING JOURNAL. MANGANESE PORT FOR GABON. V. 308, NO. 7919,

  • Deposit

    MAY 29, 1987, P. 411.

  • Deposit

    MINING WORLD. U. S. STEEL BUILDS RAIL LINK TO MANGANESE

  • Deposit

    MINE. MARCH 1959, P. 79.

  • Deposit

    U. S. DEPT. OF STATE. MIMING, MILLING, AND TRANSPORTATION OF

  • Deposit

    HIGH GRADE MANGANESE ORE, MOANDA, GABON. AIRGRAIM

  • Deposit

    A - 670, ACCRA, JULY 6, 1964, 13 PP.

  • Deposit

    U. S. DEPT. OF STATE. IMPRESSIONS OF SOUTHEAST GABON - RICH

  • Deposit

    AND BOOMING. AIRGRAM A - 308, PARIS,MAY 1, 1973, 5 PP.

  • Deposit

    U. S. DEPT. OF STATE. GABONESE MANGANESE SECTOR ACTIVITY.

  • Deposit

    AIRGRAM A- 24, LIBREVILLE, APRIL 24, 1979, 11 PP.

  • Deposit

    WEBER, F. GENESIS AND SUPERGENE ENRICHMENT OF THE PRE-

  • Deposit

    CAMBRIAN SEDIMENTARY MANGANESE DEPOSIT AT MOANDA

  • Deposit

    (GABON). UNESCO, 1973. IN GENESIS OF PRE-CAMBRIAN IRON

  • Deposit

    AND MANGANESE DEPOSITS. PROC. OF KIEV SYMP. 1970,

  • Deposit

    PP. 307-322.

  • Deposit

    SAITO, H. A. A VISIT TO COMILOG'S MOANDA MINE IN GABON. THE

  • Deposit

    TEX REPORT. V. 17, NO. 3997, JULY 1985, PP. 1-3.

  • Deposit

    NATIONAL MATERIALS ADVISORY BOARD, NATIONAL RESEARCH COUNCIL

  • Deposit

    -NATIONAL ACADEMY OF SCIENCES. MANGANESE RESERVES AND RES-

  • Deposit

    -OURCES OF THE WORLD AND THEIR INDUSTRIAL IMPLICATIONS.

  • Deposit

    NMAB-374, WASHINGTON, DC, 1981, PP. 38-39, 177-179.

  • Deposit

    LECLERC, J. AND F. WEBER. GEOLOGY AND GENESIS OF THE

  • Deposit

    MOANDA MANGANESE DEPOSITS, REPUBLIC OF GABON. PRES. AT 25TH

  • Deposit

    INTERNATIONAL GEOLOGICAL CONGRESS, MELBOURNE, AUSTRALIA,

  • Deposit

    JUNE 18-20, 1976.

  • Deposit

    MCMICHAEL, B. MANGANESE. EMD-THE POWER IN THE MARKET.

  • Deposit

    INDUSTRIAL MINERALS, NO. 260, MAY 1989, P. 46.

  • Deposit

    MINING MAGAZINE. MANGANESE. JAN. 1990, P. 38.

General comments

Subject category Comment text
Deposit MANGANESE AREAS CONSIST OF FIVE PLATEAUS: BANGOMBE, OKUOMA, MASSENGO, BAFOLO, AND YEYE. MINING IS CURRENTLY ON BANGOMBE. THERE ARE ABOUT 100MT REMAINING ON BANGOMBE AS OF 1990. OKUOMA COULD CONTAIN 50MT OF SIMILAR TYPE MATERIAL; ORE ON THE OTHER PLATEAUS IS PROBABLY LOWER GRADE. ORE IS FLAT-LYING AND SOFT; BOTH ORE AND OVERBURDEN ARE EXCAVATED BY DRAGLINES AND SCRAPERS. BENEFICIATION IS BY SIZING AND WASHING(METALLURGICAL ORE) AND HEAVY MEDIA(BAT- -TERY ORE). INFORMATION(1990) INDICATES THAT CONCENTRATE SHIPMENT WILL BE SPLIT 50:50 BETWEEN POINT NOIRE, CONGO AND THE NEW 650KM TRANS-GABON RAILWAY TO PORT LOADING FACILITIES AT OWENDA. TO SUPORT THEIR +3,800 LABOR FORCE, THE COMPANY HAS BUILT OVER 2,000 LODGING UNITS, FOUR HOSPITAL, SEVERAL PRIM- -ARY AND SECONDARY SCHOOLS, AND VARIOUS CLUBS AND RECREATION FACILITIES.

Reporter information

Type Date Name Affiliation Comment
Reporter 11-OCT-1996 Coffman, Joe 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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