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Mina Colombia

Producer in Bolivar, Venezuela with commodities Gold, Arsenic
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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. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Production statistics
  17. Reserves and resources
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10060286
MRDS ID TC10299
Record type Site
Current site name Mina Colombia
Alternate or previous names Colombia Vein, America Vein, Minervan I

Geographic coordinates

Geographic coordinates: -61.79299, 7.32981 (WGS84)
Relative position ABOUT 2.2 KM SSE OF TOWN OF EL CALLAO.

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
Gold Primary
Arsenic Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Pyrite Ore
Kaolin Gangue
Quartz Gangue
Tourmaline Gangue

Alteration

  • (Local) Albitization, Kaolinization, Silicification. Two Alteration Zones. Inner, Next To Quartz Vein Is About 20 Cm Of Albite-Dolomite-Pyrite. Outer Zone Is About 2 M Of Dolomite And Pyrite.

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Supamo Complex
    Rock description Supamo Complex
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock
    Rock unit name El Callao Formation
    Rock description El Callao Formation

Nearby scientific data

(1) -61.79299, 7.32981
ListMap

Economic information

Ore body information

  • Strike N60E-N70E
    Dip COLUMBIA VEIN: 60-70SE; AMERICA VEIN: 15-30SE
    Thickness 5M
    Length 750M
  • Strike N60E-N70E
    Dip COLUMBIA VEIN: 60-70SE; AMERICA VEIN: 15-30SE

Controls for ore emplacement

  • N70e Shear Zone

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Mining district

District name El Callao District

Ownership information

  • Type Operator
    Owner Minerven
    First year 1973
  • Type Owner
    Owner Minerven; Compania General De Minera Venezuela, C. A.
    First year 1973

Production statistics

  • Year 1968
    Period Up To 1968
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^11.28 G/T Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 11g/mt
  • Year 1968
    Period Up To 1968
    Material AU
    Accuracy Accurate
    Description Cp_Grade: ^11.28 G/T Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 11g/mt
  • Year 1984
    Material ORE
    Accuracy Estimate
    Description Ap_Grade: ^15 G/T Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 15g/mt
  • Year 1987
    Material ORE
    Accuracy Estimate
    Description Ap_Grade: ^9.9 G/T Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 10g/mt
  • Year 1988
    Material ORE
    Accuracy Estimate
    Description Ap_Grade: ^10.8 G/T Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 11g/mt

Comments on the production information

  • COMBINED AMERICA; AUSTIN 1,4,5,7,10; BARTOLO, COLOMBIA 3,4S,4N,5; CALVARIO, CANDELARIO, PALMIRA, INDEPENDIENTE, AND JUAN VEINS. IN 1988, PRODUCED ABOUT 700 TPD WITH GRADES UP TO 30 G/T (AVE. 9.9 G/T); 1989, AMERICAN AND COLOMBIA VEINS BEING MINED ON 3 LEVELS. GRADE VARIES 8-14 G/T AU.

Reserves and resources

  • Type In-situ
    Estimate year 1988
    Total resources 155000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 9.2 g/mt Gold Major 1988
  • Type In-situ
    Name COLUMBIA VEIN
    Estimate year 1966
    Total resources 4000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 20 g/mt Gold Major 1966

Comments on the reserve resource information

  • ESTIMATED TO DEPTH OF 250 M.

Workings at the site

  • Type of workings Underground
    Area 36HA
    Length 2000M
    Overall depth 479M

Comments on the workings information

  • 1988: VEINS WERE MINED ON THREE LEVELS. SURFACE AREA IS 36 HA. SHAFT 479 M. MORE THAN 2000 M OF TUNNELS ON 7 LEVELS.

Comments on development

  • PRODUCTION CAPACITY IS BETWEEN 150,000 AND 300,000 TPA.

Reference information

Bibliographic references

  • Deposit

    MINING MAGAZINE, JAN. 1989, P. 46

  • Deposit

    RODRIGUEZ M., S.E., 1986, RECURSOS MINERALES DE VENEZUELA: BOLETIN DE GEOLOGIA, REPUBLICA DE VENEZUELA, MINISTERIO DE ENERGIA Y MINAS, DIRECCION GENERAL SECTORIAL DE MINAS Y GEOLOGIA, V. 15, NO. 27, 228 P.

  • Deposit

    VASQUEZ, J.C., 1989, EL MINISTERIO DE ENERGIA Y MINAS Y LA EXPLORACION AURIFERA, IN PRIMER SIMPOSIO INTERNACIONAL DEL ORO EN VENEZUELA: CARACAS, GRAFICAS LOS PALOS GRANDES C.A., P. 300-324.

  • Deposit

    COX, DENNIS P., NOV. 1987, FIELD NOTES.

  • Deposit

    HERRERO NOGUEROL, JOSE, 1980, LAS INDUSTRIAS DEL CARBON, ALUMINO Y ORO EN VENEZUELA: BOLETIN DE LA ESCUELA DE GEOLOGIA Y MINAS DE LA UNIVERSIDAD DE ORIENTE (GEOMINAS) 16, P. 71-96.

  • Deposit

    MARSH, SHERMAN, PIERCE, H.A., SANCHEZ, HENRY, AND PAGE, N.J, (1992), THE GEOCHEMISTRY OF SIX GOLD-BEARING QUARTZ-CARBONATE TOURMALINE AREAS, ESTADO BOLIVAR, VENEZUELA: U.S. GEOLOGICAL SURVEY BULLETIN [IN PRESS}.

  • Other Database

    CIMRI

  • Production

    RODRIGUEZ, M., 1986. MENDOZA, UNPUBLISHED NOTES TO SPEECH, DESARROLLO AURIFERO, 1988.

General comments

Subject category Comment text
Deposit VEINS RANGE FROM 2 TO 10 M WIDE INCLUDING ADJACENT FRACTURE AND BRECCIA ZONES. THE HOST ROCKS ADJACENT TO THE VEINS COTNAIN ABUNDANT PYRITE AND TOURMALINE.
Deposit THIS RECORD CONTAINS DATA FROM RECORD W700703, WHICH HAS BEEN DELETEED FROM MRDS. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1991 Page, Norman J. U.S. Geological Survey
Updater 01-SEP-1991 Carbonaro, Marguerite M. (Orris, Greta J.) U.S. Geological Survey

Beyond USGS

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

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