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

Pierre Richaud/Mt. Nimba

Past Producer in Guinea with commodity Iron
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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. Reporter information

Geologic information

Identification information

Deposit ID 10232009
MAS/MILS ID 7460450001
Record type Site
Current site name Pierre Richaud/Mt. Nimba
Alternate or previous names Mt. Nimba

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -8.41548, 7.62105 (WGS84)

Site location context

Political divisions (FIPS codes)

Guinea(country)

Geographic areas

Country
Guinea

Commodities

Commodity Importance
Iron Primary

Materials information

Materials Type of material
Feldspar Unknown
Hematite Unknown
Magnetite Unknown
Mica Unknown
Pyrite Unknown
Quartz Unknown

Nearby scientific data

Ore Body (1) -8.41548, 7.62105
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Economic information

Ore body information

  • Thickness 400M
    Length 2700M
    Width 600M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 TABULAR
    Primary mode of Origin METAMORPHISM
    Secondary mode of Origin OXIDATION
    Primary Ore Control FOLDING
    Degree of Wallrock Alter. MODERATE
    Date of Last Modification 860620

Comments on the geologic information

  • THE ORE BEARING ROCK IS ITABIRITE CONTAINING 30-38% FE. IT IS A LAMINATED, METAMORPHOSED ROCK OF SHISTOSE STRUCTURE CONSISTING OF A SEQUENCE OF GRANULAR QUARTZ AND THIN LAYERS OF IRON OXIDES; HEMATITE, MAGNETITE OR MARTITE. DUE TO TROPICAL WEATHERING CONDITIONS, THE MAGNETITE HAS BEEN OXIDIZED TO HEMATITE AND QUARTZ HAS BEEN GRADUALLY LEACHED AND WASHED OUT.

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Metallic
Significant Yes

Ownership information

  • Type Operator
    Owner Mifergui Nimba Co.
    Year 1982
  • Type Owner
    Owner Guinea Government
    Interest 50
    Year 1982
  • Type Owner
    Owner Foreign Shareholders
    Interest 50
    Year 1982

Comments on the production information

  • PRODUCTS WILL BE DISTRIBUTED TO THE FOLLOWING COUNTRIES: NIGERIA, ALGERIA, SPAIN, ROMANIA, YUGOSLAVIA, JAPAN, FRANCE, AND LIBERIA.

Reserves and resources

  • Type In-situ
    Estimate year 1982
    Measured 350000000mt ore
    Demonstrated 350000000mt ore
    Total resources 350000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 66.7 wt-pct Iron Major 1982

Comments on the reserve resource information

  • PLANNED CAPACITY OF 15,000,000 MTPY ORE. OW: GUINEA GOVT. OW/OP: CIE MINERALE DE FER DE GUINEE.

Workings at the site

  • Type of workings Surface
    Area 175HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Mining Method OPEN PIT
    Percent Waste Rock 29
    Avg. Bench Height (meters) 12
    Capacity 48100
    Capacity Units MT ORE/DAY
    Unit Production Cost 3.28
    Units of Production $/MT ORE
    Operating Days per Year 312
    Operating Shifts per Day 3
    Year of Information 1982

Comments on other economic factors

  • MT. NIMBA IS CURRENTLY A NON-PRODUCING PROPERTY. THE COST AND CAPACITY INFORMATION LISTED HERE IS ESTIMATED FOR THE YEAR 1990, WHEN THE PROPERTY IS EXPECTED TO BE IN FULL PRODUCTION. THE FIRST EXPECTED YEAR OF PRODUCTION IS 1988.

Reference information

Bibliographic references

  • Deposit

    PENSA, A., MIFERGUI-NIMBA IRON ORE PROJECT IN GUINEA, METAL

  • Deposit

    BULLETIN'S SECOND INTERNATIONAL IRON ORE SYMPOSIUM,

  • Deposit

    FRANKFURT, MARCH 23-24, 1981, 16 P.

Reporter information

Type Date Name Affiliation Comment
Reporter 17-JUL-1986 Bolis 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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