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Sosa Mendez-Union Mine

Past Producer in Bolivar, Venezuela with commodities Gold, Tungsten
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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. Production statistics
  16. Reserves and resources
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10060463
MRDS ID TC20131
Record type Site
Current site name Sosa Mendez-Union Mine
Alternate or previous names Union, Sosa Mendez, Santa Maria, M.M.

Geographic coordinates

Geographic coordinates: -61.79438, 7.30453 (WGS84)
Relative position 3 KM E OF LAGUNA MINE, TO THE S OF CARATAL.

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
Tungsten Critical Tertiary

Comments on the commodity information

  • IN THE VOLCANIC-SEDIMENTARY SEQUENCE OF THE LA QUINTA FORMATION A NUMBER OF METALLOTECTS WITH COPPER MINERALIZATION HAVE BEEN DETERMINED. THESE HAVE BEEN GROUPED INTO 5 TYPES WELL REPRESENTED IN THE FIELD. 1) NATIVE COPPER, 2) COPPER SULFIDES IN SEDIMENTS, 3) COPPER AND PETROLEUM SULFIDES IN SEDIMENTS, 4) COPPER-IRON SULFIDES IN FELSIC VOLCANICS, AND 5) COPPER-IRON SULFIDES ASSOCIATED WITH MAFIC DIKES.

Materials information

Materials Type of material
Gold Ore
Scheelite Ore
Albite Gangue
Biotite Gangue
Chlorite Gangue
Pyrite Gangue
Quartz Gangue
Tourmaline Gangue

Alteration

  • (Local) Carbonization, Chloritization, Epidotization

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 Formation
    Rock description Supamo Formation
    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 > Mafic Metamorphic Rock > Meta-Basalt
    Rock unit name El Callao Formation
    Rock description El Callao Formation
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -61.79438, 7.30453
ListMap

Economic information

Ore body information

  • General form VEIN
    Strike N70E
    Dip 60SE
    Thickness 15M
    Length 1500M

Controls for ore emplacement

  • N70e Shear Zone

Comments on the geologic information

  • EPIGENETIC DEPOSIT
  • INTERMEDIATE AND FELSIC VOLCANIC ROCK SEQUENCES INTERBEDDED WITH MAINLY CONTINENTAL SEDIMENTART ROCKS ASSOCIATED WITH MINERALIZATION.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No
Year of first production 1933

Mining district

District name El Callao District

Production statistics

  • Year 1968
    Period - 1968
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^7.0 G Au/T. Sosa Mendez-Union
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 7g/mt
  • Year 1969
    Period - 1969
    Material ORE
    Accuracy Estimate
    Description Cp_Grade: ^18.4 G Au/T, Santa Maria
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 18g/mt

Reserves and resources

  • Type In-situ
    Estimate year 1972
    Total resources 1007394000mt ore
    Commodity Subtype Grade units Group Importance Year
    Tungsten Wo3 13.48 wt-pct Tungsten Trace 1972
  • Type In-situ
    Estimate year 1969
    Total resources 2000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 12 g/mt Gold Major 1969

Comments on the reserve resource information

  • THE POTENTIAL RESOURCES HAVE NOT BEEN QUANTIFIED, BUT TAKING INTO CONSIDERATION THE REGIONAL DISTRIBUTION OF MINERALIZATION AND THE GRADES OF THE ORES BETWEEN 9.3% AND 1.5% CU, THESE DEPOSITS MIGHT REPRESENT GOOD PROSPECTS FOR EXPLOITABLE COPPER RESOURCES.

Comments on the workings information

  • WORKINGS OF THE SOSA MENDEZ AND UNION JOINED BETWEEN 1933 AND 1939.

Comments on development

  • PETROLEUM COMPANIES; MEM IN 1972
  • DEPOSITS ARE MINED OUT.

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

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

  • 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

    MENENDEZ, ALFREDO, BENAIM, N., YANEZ, GALO, AND BAPTISTA, G., JOSE, 19??, GUIA LA EXCURSION GEOLOGIA GUASIPATI EL CALLAO-CANAIMA IN IX CONFERENCIA GEOLOGIA INTER-GUAYANAS EXCURSIONES GEOLOGICAS, P. 49-62.

  • Other Database

    CIMRI

  • Production

    LOCHER, 1974, P. 577, 567.

General comments

Subject category Comment text
Deposit THERE ARE 5 VEINS NEAR THE SURFACE IN AN OXIDIZED SHEAR ZONE 100 M THICK AND 1.6 KM LONG. DRILL HOLES PERPENDICULAR TO THE QUARTZ VEIN PENETRATED A CHLORITE ZONE GREATER THAN 20 M THICK, AND AN AREA OF CARBONIZATION AND EPIDOTIZATION. SANTA MARIA VEIN CONNECTS AT ITS NORTH END WITH UNION VEIN.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1990 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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