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  3. Mineral Resource Data System (MRDS)

Cerro Bolivar

Producer in Bolivar, Venezuela with commodities Iron, Manganese, Titanium, Metal, Phosphorus-Phosphates
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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. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Reserves and resources
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10111256
MRDS ID W026900
Record type Site
Current site name Cerro Bolivar
Alternate or previous names La Parida

Geographic coordinates

Geographic coordinates: -63.3972, 7.45898 (WGS84)
Relative position ABOUT 120 KM S OF PUERTO ORDAZ.

Site location context

Political divisions (FIPS codes)

Bolivar(province)

Venezuela(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Venezuela Bolivar

Commodities

Commodity Importance
Iron Primary
Manganese Critical Tertiary
Titanium, Metal Critical Tertiary
Phosphorus-Phosphates Tertiary

Materials information

Materials Type of material
Goethite Ore
Hematite Ore
Limonite Ore
Magnetite Ore

Alteration

  • (Local) Laterization

Analytical data

Result BLENDED ORES = 64% DRY IRON, 1.3% SIO2, 1.3% AL2O3, 6% COMBINED WATER, 7% MOISTURE, AND MINOR AMOUNTS OF PHOSPHORUS, TITANIA, AND MANGANESE.

Mineral occurrence model information

Model code 188
USGS model code 28b
Deposit model name Algoma Fe

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Stratigraphic age (youngest) Neoarchean
    Stratigraphic age (youngest) Neoarchean
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Imataca Complex
    Rock description Imataca Complex

Nearby scientific data

(1) -63.3972, 7.45898
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Isoclinal Folding Along Ene-Wsw Axes
Type of structure Local
Structure description Tight Folding And Imbricate Reverse Faulting

Ore body information

  • General form LENSES
    Thickness 213.36M
    Length 6437.2M
    Width 1219.2M
    Depth to top 15.24M
    Depth to bottom 259.08M

Economic information about the deposit and operations

Development status Producer
Commodity type Both
Deposit size Large
Significant No
Discovery year 1947
Discoverer Oliver Iron Mining Division Of U.S. Steel Corp.
Year of first production 1954

Mining district

District name Cerro Bolivar Group

Ownership information

  • Type Operator
    Owner Orinoco Mining Co. Until 1975; Corporacion Venezolano De Guayana )
    First year 1976
  • Type Owner
    Owner Nationalized In Jan. 1975

Reserves and resources

  • Type In-situ
    Estimate year 1970
    Measured 353000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 63 wt-pct Iron Major 1970
  • Type In-situ
    Estimate year 1978
    Total resources 231000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 55 wt-pct Iron Major 1978
  • Type In-situ
    Estimate year 1981
    Total resources 216000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 64 wt-pct Iron Major 1981

Comments on the reserve resource information

  • ABOUT 2/3 RESERVES ARE BROWN ORE (62-64% FE, 0-6% SIO2, 1% AL2O3, AND 3% LOI), AND BLACK ORE (66-68% FE, 0-6% SIO2, 1% AL2O3 AND 0-3% LOI).

Comments on development

  • 1947-1949 DRILLING, 3 TUNNELS ; ECON.COM: ORE/WASTE RATIO 4.3

Reference information

Bibliographic references

  • Deposit

    ALVARADO, BENJAMIN, 1970, IRON ORE DEPOSITS IN SOUTH AMERICA, IN SURVEY OF WORLD IRON ORE RESOURCES -- OCCURRENCE AND APPRAISAL: NEW YORK, UNITED NATIONS, P. 302-380.

  • Deposit

    RUCKMICK, J.C., 1963, THE IRON ORES OF CERRO BOLIVAR, VENEZUELA: ECONOMIC GEOLOGY, V. 58, P. 218-236.

  • Deposit

    RILEY, C.M., 1966, OUR MINERAL RESOURCES: NEW YORK, JOHN WILEY & SONS, 338 P.

  • Deposit

    LAKE, M.C., 1950, CERRO BOLIVAR - U.S. STEEL'S NEW IRON ORE BONANZA: ENGINEERING & MINING JOURNAL, V. 151, NO. 8., P. 72-83.

  • Deposit

    ASCANIO, G., 1985, YACIMIENTOS DE MINERAL DE HIERRO DEL PRECAMBRIO DE VENEZUELA: I SIMPOSIUM AMAZONICO, BOLETIN DE GEOLOGIA, PUBLICACION ESPECIAL NO. 10, P. 464-473.

  • Deposit

    MINING MAGAZINE, 1981, IRON ORE MINING IN VENEZUELA: V. 145, NO. 1, P. 18-25.

  • Deposit

    INSTITUTO INTERNACIONAL DE INTEGRACION, 1986, GEOGRAFIA ECONOMICA, AREA DE RECURSOS MINERALES: LA PAZ, INSTITUTO INTERNACIONAL DE INTEGRACION, 716 P.

  • Deposit

    COMMISSION FOR THE GEOLOGICAL MAP OF THE WORLD, 1983, METALLOGENIC MAP OF SOUTH AMERICA, 1:5,000,000, EXPLANATORY TEXT: CARACAS, 88 P.

  • Deposit

    GRUSS, H., 1973, ITABIRITE IRON ORES OF THE LIBERIA AND GUYANA SHIELDS, IN GENESIS OF PRECAMBRIAN IRON AND MANGANESE DEPOSITS: PROC. KIEV SYMPOSIUM (1970), UNESCO EARTH SCI. SER., NO. 9, P. 335-359.

  • Other Database

    CIMRI

  • Production

    INSTITUTO INTERNACIONAL DE INTEGRACION, 1986, P. 562.

  • Reserve-Resource

    ALVARADO, 1970.

General comments

Subject category Comment text
Deposit CRUSTAL ORES, FERRUGINOUS LATERITES, MANTLE OREBODIES TO AN AVERAGE DEPTH OF 50 FT - FRIABLE ORES BELOW CRUSTAL ONES TO A DEPTH OF 800 FT.
Deposit THIS IS ONE OF SEVEN DEPOSITS IN THE CERRO BOLIVAR GROUP. SEE MRDS RECORD FOR THAT GROUP FOR DETAILED INFORMATION. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1973 Cooper, Margaret U.S. Geological Survey
Updater 01-MAY-1991 Bolm, Karen S. U.S. Geological Survey

Beyond USGS

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

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