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  3. Mineral Resource Data System (MRDS)

El Chivao Placers

Producer in Bolivar, Venezuela with commodity Gold
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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. Economic information about the deposit and operations
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10067057
MRDS ID TC50099
Record type Site
Current site name El Chivao Placers
Alternate or previous names Rio Chivao Placers

Geographic coordinates

Geographic coordinates: -61.84855, 6.2882 (WGS84)
Elevation 140

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

Materials information

Materials Type of material
Gold Ore
Quartz Gangue
Sericite Gangue
Tourmaline Gangue

Alteration

  • (Local) Quartz-Sericite Carbonate Alteration Producing Quartz-Sericite Associated With Kaolinite Schist.

Analytical data

Result VEIN YIELDS 30 G/T, OTHER WORKINGS RUN UP TO 34 PPM AU (BROOKS AND OTHERS, IN PRESS).

Mineral occurrence model information

Model code 119
USGS model code 39a
Deposit model name Placer Au-PGE
Mark3 model number 54

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist > Mica Schist
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -61.84855, 6.2882
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description N45e Trending Fault In Yuruari Formation, Vertical Shists

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Workings at the site

  • Type of workings Surface
    Area 400HA

Comments on the workings information

  • HYDROLOGICALLY MINED WEATHERED VEINS. ALLUVIAL DIGGINGS. MINOR PLACER. FIVE MINES IN CLUSTER. GOLD FLAKES IN NEARBY STREAM WORKED BY BATEA (5 PEOPLE PER BATEA). OPEN PIT IS UP TO 30 M IN DIAMETER.

Reference information

Bibliographic references

  • Deposit

    SALAZAR, E., 1988, INFORME GEOLOGICO-GEOCHEMICO DE ZONA DE UROY-CHIVAO INTERNO INFORME DE TECNICA MINERA.

  • Deposit

    ACOSTA, JUAN, TECMIN, PERSONAL COMMUNICATION, 9-18-91.

  • Deposit

    GUTIERREZ, J., 1987, INFORME DE AVANCE SOBRE EL TRABAJO DE CAMPO, EFECTUADO EN EL RIO CHIVAO DESDE EL 29/10 AL 5-11-87: CVG TECNICA MINERA C.A., INFORME, 5 P.

  • Deposit

    BROOKS, W.E., GUERRA, A., NUNEZ, F., 19--, GOLD RESOURCES OF THE RIO CHIVAO STUDY AREA, ESTADO BOLIVAR, VENEZUELA: US GEOLOGICAL SURVEY BULLETIN [IN PRESS].

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit IN METEORIZED BANDED TUFFECEOUS METAVOLCANIC ROCKS. QUARTZ-SERICITE CARBONATE ALTERATION PRODUCING QUARTZ-SERICITE ASSOCIATED WITH SCHIST KAOLINITE. SULFIDE POOR IN "GOSSAN" LIKE SHEAR ZONES. TOURMALINE ALSO REPORTED IN AREA THAT EXTENDS APPROXIMATELY 1 KM PERPENDICULAR TO FAULTS AND 1 KM ALONG FAULT. VEIN TREND N55-60E. PLACER WORKINGS IN RIVER.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1991 Gray, Floyd (Cox, Dennis P.) U.S. Geological Survey

Beyond USGS

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

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