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Moanda Mine

Producer in Gabon with commodity Manganese
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Host and associated rocks
  7. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mining district
  10. Ownership information
  11. Production statistics
  12. Reserves and resources
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10024434
MRDS ID ISM0146
Record type Site
Current site name Moanda Mine
Alternate or previous names Bangombe, Okouma 2 Main Ore Bodies

Geographic coordinates

Geographic coordinates: 13.28475, -1.56495 (WGS84)
Elevation 580
Relative position ORE BODY; 5 KM

Site location context

Political divisions (FIPS codes)

Gabon(country)

Geographic areas

Country
Gabon

Comments on the location information

  • 40 KM WNW OF FRANCEVILLE

Commodities

Commodity Importance
Manganese Critical Primary

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale > Black Shale
    Rock unit name Francevillian Series
    Rock description Francevillian Series
    Stratigraphic age (youngest) Paleoproterozoic

Nearby scientific data

(1) 13.28475, -1.56495
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Economic information

Comments on the geologic information

  • ; MNGN + PRLS + CPML + NSUTITE + LITHIOPHORITE; LMON + KLNT + ILLITE; THE MOANDA MANGANESE DEPOSITS ARE SHALLOW, TABULAR FORMS ATOP 5 PLATEAUS, THE 2 MOST IMPORTANT HAVING MINERALIZED AREAS OF 13 KM2 AND 19 KM2. ORE ZONE IS COMPRISED OF A THIN (0.2-0.5 M) BASAL UNIT OF MASSIVE MN OXIDES AND HYDROXIDES WITH ACCESSORY SECONDARY RHODOCHROSITE. THIS IS OVERLAIN BY A 3-9 M UNIT OF PLAQUETTES OF SIMILAR MINERALOGY.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1951
Year of first production 1962
Year of last production 1982

Mining district

District name Moanda

Ownership information

  • Type Operator
    Owner Comilog
  • Type Owner
    Owner Comilog: Us Steel (39%), Gabonese Government (20%), Coframines (Bureau Des Recherches Geol. Et Minie

Production statistics

  • Year 1978
    Accuracy Estimate
    Description Ap_Grade: ^50% Mn (Processed Ore Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Manganese Manganese 50wt-pct

Comments on the production information

  • 2,000,000 MTPA1-PA5=TOTAL ORE SHIPMENTS; PA6 = METALLURGICAL ORE

Reserves and resources

  • Type In-situ
    Estimate year 1980
    Total resources 69000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Manganese Mn 44 wt-pct Manganese Major 1980

Comments on the reserve resource information

  • RR25: INFERRED RESERVES OF PRODUCT.

Comments on development

  • NON-GEOLOGIC CONSTRAINTS ON DEVELOPMENT OR EXPANSION IN 1-5 YRS. ( TRANSPORT/ACCESS; ORE MUST BE TRANSPORTED 575 KM TO PORT OF POINTE NOIRE). ASSESSMENT(IT IS EXPECTED THAT PRODUCTION WILL INCREASE TO 4 MILLION MT/YR ONCE THE PROPOSED TRANS-GABON RAILWAY IS COMPLETED); COMILOG = COMPAGNIE MINIERE DE 1'OGOOUE SA; MOANDA'S DEPOSITS PRODUCE HIGHEST METALLURGICAL GRADE PRODUCT IN THE WORLD (57% MN); BATTERY GRADE ORES ALSO PRODUCED

Reference information

Bibliographic references

  • Deposit

    NATIONAL MATERIALS ADVISORY BOARD, 1981, MANGANESE RESERVES AND RESOURCES OF THE WORLD AND THEIR INDUSTRIAL IMPLICATIONS: NMAB-374, NATIONAL ACADEMY OF SCIENCES, WASHINGTON, DC, P. 34-38, 177. (G1-G13,C2-C8,C14,L11,C18,RR1,RR8,RR25,RR32,REP4)

  • Deposit

    SKILLINGS, 1974, INDUSTRIES ET TRAVAUX D'OUTRE MER, V. 15, NO. 5, P. 76. (PA4-PA6,PC1)

  • Deposit

    DUKE, V. W. A., 1979, MANGANESE, A MINERAL COMMODITY REVIEW: INTERNAL REPORT 53, SOUTH AFRICAN MINERALS BUREAU, JOHANNESBURG, SOUTH AFRICA, 246 P.

  • Deposit

    WORLD MINING, 1979, GABON ?ANNUAL REVIEW?: WORLD MINING, V. 32, NO. 8 (JUL), P. 169. (PA1-PA3)

  • Deposit

    KINGSTON, JOHN, 1983, ELKEM BUYS 6% HOLDING IN COMILOG: AMERICAN METAL MARKET, V. 91, NO. 159 (16 AUG), P. 1, 16. (C1)

  • Production

    PA1-PA3: RF4, P. 169; PA4-PA6: RF2, P. 46-51 PC1: RF2, P. 46-51

General comments

Subject category Comment text
Deposit THIS RECORD WAS COMPILED FOR THE INTERNATIONAL STRATEGIC MINERALS INVENTORY. THE DATA WERE USED IN PREPARATION OF THE USGS CIRCULAR 930 SERIES OF REPORTS. MINERAL RESOURCE CATEGORIES AND CODES HEREIN ARE FROM THE INTERNATIONAL CLASSIFICATION SYSTEM RECOMMENDED BY THE UNITED NATIONS GROUP OF EXPERTS ON DEFINITIONS AND TERMINOLOGY FOR MINERAL RESOURCES. (SEE NATIONAL RESOURCES FORUM, V. 4, NO. 3, P. 307-313.). SURFACE 6 M REFINED GABON RANKS SECOND TO SOUTH AFRICA IN OUTPUT OF MN ORE PROVIDING 25% OF THE MARKET ECONOMIES HIGH-GRADE ORE. THESE DEPOSITS PRODUCE ABOUT 60% OF THE WESTERN SUPPLY OF HIGH-GRADE MN DIOXIDE USED FOR BATTERIES AND IN CHEMICAL APPLICATIONS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1982 Cannon, William F. U.S. Geological Survey

Beyond USGS

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

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