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Sipao

Prospect in Bolivar, Venezuela with commodities Gold, Diamond
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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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Links to other databases
  10. Bibliographic references
  11. General comments
  12. Reporter information

Geologic information

Identification information

Deposit ID 10060405
MRDS ID TC20056
Record type Site
Current site name Sipao

Geographic coordinates

Geographic coordinates: -65.32918, 7.50926 (WGS84)

Site location context

Political divisions (FIPS codes)

Bolivar(province)

Venezuela(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Venezuela Bolivar

Comments on the location information

  • 40 KM ALLUVIAL PLAIN OF THE QUEBRADA GRANDE AND ITS PRINCIPAL TRIBUTARIES.

Commodities

Commodity Importance
Gold Primary
Diamond Tertiary

Comments on the commodity information

  • COLOR OF THE DIAMONDS VARIES FROM BROWN, BEIGE, ORANGE, TO GREY AND RARELY BLUE-BLACK. THEY HAVE ABUNDANT INCLUSIONS, AND THEIR FLUORESENCE IS IRREGULAR RANGING FROM NONE TO MILKY WHITE.

Materials information

Materials Type of material
Gold Ore

Nearby scientific data

(1) -65.32918, 7.50926
ListMap

Economic information

Comments on the geologic information

  • THERE ARE SOME PECULIAR TRACE/ACCESSORY MINERALS SUCH AS STAUROLITE.
  • GRAVELS COME FROM GRANITIC AND BASIC ROCKS, GRAVELS ARE FINE AND OVERLIE EXTREMELY ALTERED ROCK WITH IRREGULAR LONGITUDINAL PROFILE THAT IS FAVORABLE FOR CONCENTRATION OF MINERALS. BEST FINDS WHERE GRAVELS ARE THICKEST. THE ABUNDANCE OF DIAMONDS IN THE 15-20+ CARAT RANGE INDICATES THE DIAMONDS HAVE NOT UNDERGONE PROLONGED TRANSPORT AND THAT THE PRIMARY SOURCE IS NEARBY.

Economic information about the deposit and operations

Development status Prospect
Commodity type Both
Deposit size Small
Significant No

Comments on the workings information

  • MINERS HAVE BUILT RIVER DIVERSIONS UP TO 160 M LONG; CIRCULAR PITS DOWN TO 10 M TO MINE SHORE GRAVELS, SOME WITH PUMPS AND WINDLASSES.

Comments on development

  • CANADIAN COMPANY WORKED THERE IN MID-1980'S. SOME BRITISH GEOLOGISTS WORKING FOR AN AMERICAN-VENEZUELAN JOINT VENTURE DID SOME WORK IN 1988-89.

Reference information

General comments

Subject category Comment text
Deposit 2 TYPES OF DEPOSIT: 1) DIAMOND BEARING GRAVEL WHICH OVERLAYS AN IGNEOUS SUBSTRATA; 2) THOSE WHICH OVERLIE A BLUE-GREEN CLAY FROM THE DECOMPOSITION OF KIMBERLITES AND OTHER ROCKS. ORE IS OFTEN IN OLDER CHANNELS WHICH HAVE BEEN BURIED BY YOUNGER BARREN SAND AND CLAY.
Deposit SEE GUANIAMO DISTRICT, MRDS RECORD TC20057.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1990 Bolm, Karen S. U.S. Geological Survey

Beyond USGS

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

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