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Vuelvan Caras

Producer in Bolivar, Venezuela with commodities Gold, Copper
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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. Production statistics
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10107031
MRDS ID TC20022
Record type Site
Current site name Vuelvan Caras
Alternate or previous names Vuelvan Caracas

Geographic coordinates

Geographic coordinates: -60.76075, 7.10732 (WGS84)
Relative position 60 KM SE OF TUMEREMO AND 20 KM W OF THE GUAYANA BORDER.

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
Copper Tertiary

Materials information

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

Alteration

  • (Local) Sericitization, Chloritization

Analytical data

Result GOLD GRADES ARE REPORTED TO RUN BETWEEN 6 AND 12 G/T.

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 > Quartz Monzonite
    Rock unit name Vuelvan Caras Pluton
    Rock description Vuelvan Caras Pluton
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock
    Rock unit name El Callao;Caballape Formation;Grupo Carichapo
    Rock description El Callao;Caballape Formation;Grupo Carichapo

Nearby scientific data

(1) -60.76075, 7.10732
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Caps Of Precambrian Metavolcanic Rocks And Metasediments Intruded By Granites

Ore body information

  • General form VEIN
    Strike N30W, N20W
    Dip 85N AND 65E
    Thickness 0.07M
    Length 700M

Comments on the geologic information

  • MAY BE A PORPHYRY-TYPE GOLD OCCURRENCE.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1850
Production years EXPLOITED 1939-1942 IN ZONE OF OXIDATION.

Mining district

District name Tumeremo Region

Production statistics

  • Year 1942
    Period 1939-1942
    Material AU
    Accuracy Estimate
    Description Cp_Grade: ^63 G Au/T
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 63g/mt

Comments on development

  • IN 1971, MINISTERY OF ENERGY AND MINES CONDUCTED GEOECONOMIC STUDIES OF THE ZONE.

Reference information

Bibliographic references

  • 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

    LOPEZ, V.M., 1981, EL ORO EN VENEZUELA: CARACAS, MINISTERIO DE ENERGIA Y MINAS, DIRECCION DE MINAS, 116 P.

  • Deposit

    LOCHER, EUGENIO, 1974, ORO EN VENEZUELA: IN MEMORIA DE LA NOVENA CONFERENCIA GEOLOGICA INTER-GUAYANAS, CIUDAD GUAYANA, VENEZUELA, MAYO 7-14, 1972: CARACAS, EDITORAL SUCRE, PUBLICACION ESPECIAL NO. 6, P. 559-587.

  • 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

    SIDDER, G.B., 1990, MINERAL OCCURRENCES IN THE GUIANA SHIELD, VENEZUELA: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 90-16, 28 P.

  • Deposit

    GRATEROL, V.R., 1974, RESULTADOS DE LA PROSPECCION GEOFISICA EN LAS ZONAS DE VUELVEN CARAS Y BOTANAMO, ESTADO BOLIVAR: MEMORIA DE LA NOVENA CONFERENCIA GEOLOGICA INTER-GUAYANAS, PUBLICACION ESPECIAL 6, P. 529-549.

  • Deposit

    MENDOZA S., V., 1985, POTENCIAL AURIFERO DE GUAYANA; TRABAJO EN PROGRESO, IN ESPEJO, A., RIOS, J.H., AND DE BELLIZZIA, N.P., EDS., VI CONGRESO GEOLOGICO VENEZOLANO: CARACAS, VENEZUELA, SEPT. 29 - OCT. 6, 1985, MEMORIA CONGRESO GEOLOGICO VENEZOLANO, V. 6, P. 4038-4068.

  • Other Database

    CIMRI

  • Production

    LOCHER, 1974, P. 578; 1939-42 ESTIMATE FROM MENDOZA, 1985.

General comments

Subject category Comment text
Deposit TWO VEINS. THE OXIDIZED ZONE GOES TO A DEPTH OF 50 M. VEIN NUMBER 1 STRIKES N30W AND DIPS 85; VEIN NUMBER 2 STRIKES N20E AND DIPS 65E. VEINS OCCUR NEAR CONTACT OF CABALLAPE FORMATION AND GRUPO CARICHAPO.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1991 Bolm, Karen S. 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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