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  3. Mineral Resource Data System (MRDS)

Los Barrancos

Producer in Bolivar, Venezuela 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. Nearby scientific data
  7. Economic information about the deposit and operations
  8. Ownership information
  9. Reserves and resources
  10. Workings at the site
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10303934
MAS/MILS ID 3070130018
Record type Site
Current site name Los Barrancos

Comments on the site names

  • FORMERLY LOS BARRANCOS I & II.

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -63.19941, 7.30181 (WGS84)
Elevation 600
Location accuracy 1000(meters)

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

Nearby scientific data

Ore Body (1) -63.19941, 7.30181
ListMap

Economic information

Comments on the geologic information

  • ALL VENEZUELAN IRON DEPOSITS OCCUR IN THE IGNEOUS AND METAMORPHIC ROCKS OF THE GUYANA SHIELD AND SPECIFICALLY THE IMATACA FORMATION, WHICH CONSISTS OF GNEISSES, SCHISTS, FINE-GRAINED LAKE SUPERIOR TYPE TACONITES (IN FERRUGINOUS QUARTZITES), AND BRAZILIAN ITABIRITE IRON ORE. THE LATTER HAVE FORMED RICH IRON DEPOSITS THROUGH SECONDARY ENRICHMENT PROCESSES. EMPTY SPACES WERE FORMED THROUGH LEACHING OF THE SILICA, AND WERE THEN REFILLED WITH IRON HYDROXIDES. AFTER FORMATION OF THIS TYPE OF ORE, WEATHERING CAUSED THE SURFACE FORMATION OF A VERY STRONG, HARD LAYER, TERMED THE "CRUST", COVERING THE FINES(TACONITE) AND RANGING IN THICKNESS FROM 1 TO 50 M. THE CRUST IS RICH IN HEMATITE AND CONSTITUTES THE PRINCIPAL ORES, WHICH OCCUR IN CONJUNCTION WITH THE CANGAS (IRON BRECCIAS), WHICH ARE HIGH IN SILICA AND ALUMINA.

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Metallic
Significant Yes

Ownership information

  • Type Owner-Operator
    Owner Cvg Ferrominera Orinoco
    Interest 100
    Home office Venezuela
    Year 1981

Reserves and resources

  • Type In-situ
    Estimate year 1981
    Indicated 232000000mt ore
    Demonstrated 232000000mt ore
    Total resources 232000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 64 wt-pct Iron Major 1981
    Iron Fe 64 wt-pct Iron Major 1981
    Iron Fe 64 wt-pct Iron Major 1981

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Mining Method OPEN PIT
    Capacity 30900
    Capacity Units MT ORE/DAY
    Unit Production Cost 1.67
    Units of Production $/MT ORE
    Operating Days per Year 312
    Operating Shifts per Day 2
    Year of Information 1982

Comments on other economic factors

  • THE COST AND CAPACITY INFORMATION LISTED ARE ESTIMATED FOR THE YEAR 1990, WHEN THE PROPERTY IS EXPECTED TO BE IN FULL PRODUCTION.

Reference information

Bibliographic references

  • Deposit

    MINING MAGAZINE. IRON MINING IN VENEZUELA. JULY, 1981,

  • Deposit

    PP. 18-25.

  • Deposit

    ENGINEERING AND MINING JOURNAL. VENEZUELA: A BOOMING SCENE.

  • Deposit

    NOV. 1977, PP. 63-69.

  • Deposit

    ARGALL, G. O., JR. FERROMINERA ORINOCO MAXIMIZES IRON MINES

  • Deposit

    TO MEET NEW ORE DEMANDS. WORLD MINING. MARCH 1977,

  • Deposit

    PP. 51-54.

  • Deposit

    MINING MAGAZINE. CVG: USING VENEZUELAN NATURAL RESOURCES.

  • Deposit

    JULY 1981, PP. 34-37.

  • Deposit

    MINISTRY OF MINES, CARACAS, VENEZUELA. MONTHLY BULLETIN.

  • Deposit

    V. 9, NO. 5, MAY 1976, PP. 16-24.

  • Deposit

    UNITED NATIONS. SURVEY OF WORLD IRON RESOURCES. 1970.

  • Deposit

    RUCKNICK, J. C. THE IRON ORES OF CERRO BOLIVAR. ECON. GEOL.

  • Deposit

    V. 58, JUNE 25, 1975, PP. 218-236.

General comments

Subject category Comment text
Deposit THE LOS BARRANCOS DEPOSIT, ALONG WITH THE SAN ISIDRO MINE AND THE EL TRUENO DEPOSIT, LIES IN THE SO-CALLED SAN ISIDRO QUADRANGLE WITHIN THE LARGER BOLIVAR QUADRANGLE. THE DEPOSIT IS ESTIMATED TO BE ABOUT 1400M LONG, 400M WIDE, AND 100M THICK. FOR THE PURPOSE OF AVAILABILITY ANALYSIS, CAPITAL COSTS TO DEVELOP THE DEPOSIT ARE ESTIMATED TO BE ABOUT $235 MIL- -LION IN TERMS OF US 1981 DOLLARS. OPEN PIT MINE OPERATING COSTS ARE ESTIMATED AT $1.68/MT, AND MILL (CRUSH/SCREEN) COSTS ARE ESTIMATED AT $0.85/MT.

Reporter information

Type Date Name Affiliation Comment
Reporter 11-JAN-95 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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