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Cerro La Pinto Mine

Past Producer in Bolivar, Venezuela with commodities Gold, PGE
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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. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10099659
MRDS ID TC50392
Record type Site
Current site name Cerro La Pinto Mine

Geographic coordinates

Geographic coordinates: -64.1036, 7.43342 (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

  • THE DISTRICT IS DRAINED BY CATARACT AND BASIN CREEKS AND THEIR TRIBUTARIES ON THE N ON THE S BY KLEINSCHMIDT AND GALENA GULCHES.
  • SE END OF PUEBLO LA ESMERALDA.

Commodities

Commodity Importance
Gold Primary
PGE Critical Tertiary

Materials information

Materials Type of material
Gold Ore

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 Host
    Rock type Metamorphic Rock > Metasedimentary Rock
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone

Nearby scientific data

(1) -64.1036, 7.43342
ListMap

Economic information

Comments on the geologic information

  • A TENDENCY TOWARD ZONING OF THE METALS IN THE VEINS HAS BEEN NOTED. THIS ZONING IS EXPRESSED WITH MANGANESE OXIDE AND GALENA IN THE UPPER PORTION OF THE VEIN, FOLLOWED IN DEPTH BY SPHALERITE AND A DECREASE IN GALENA WITH LITTLE OR NO MANGANESE OXIDE; AT ADDITIONAL DEPTH THE SPHALERITE-GALENA GIVES AWAY TO PYRITE WITH SOME CHALCOPYRITE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name La Mina (La Esmeralda)

Comments on the production information

  • ITEM 17 FROM 37676 CUBIC YDS OF EARTH. ITEM 23 FROM 865547 TON OF ORE. 1946-1976 ABOUT 250000 STONS WERE PRODUCED. BUILDING STONE OF RHYOLITE HAS BEEN QURRIED.

Comments on the workings information

  • ADITS, TUNNELS, PLACER, AND QUARRIING

Comments on development

  • MOST MINES WITH PRODUCTION: GRAY EAGLE, COPPER KING, EVA MAY, UNCLE SAM, HOPE-BULLION, MORNING STAR, CUSTER, ALLPORT, KIT CARSON, COMET, AURORA, BASIN BELL, BASIN JIB, BLACK BEAR, BOULDER, BOSTON, COMSTOCK, CRESCENT, CRYSTAL, GRAY LEAD, HATTIE FERGUSON, HIAWATTAHA, HIGH ORE, JOSEPHINE, KING COLE, KLONDYKE, LOTTA, MANTLE, MARGUERITE, MINNEAPOLIS, MORNING GLORY, OBELISK, RED WING, RUMLEY, SATURDAY NIGHT, SOLAR PEARL, DUMORTIERITE, BASIN QUARTZ, BULLION, MONO GROUP

Reference information

Bibliographic references

  • Deposit

    MARSH, S., 1991, UNPUBLISHED DATA.

  • Deposit

    SIDDER, G., 1991, UNPUBLISHED DATA.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit ORE DEPOSITS COMPRISE BOTH OLDER PB-ZN-AG FISSURE REPLACEMENTS AND YOUNGER, LOW-TEMPERATURE, AU-AG DEPOSITS. FROM CATARACT CREEK (MORNIG GLORY MINE) E TO BOULDER VALLEY IS THE COMET-GRAY EAGLE SHEAR ZONE. IT TRENDS N 80 W AND DIPS STEEPLY. MUCH OF THE ROCK ALONG THE SHEAR ZONE HAS BEEN ALTERED AND IN MANY PLACES EXTENSIVELY MINERALIZED. THE QUARTZ IS A PEGMATITE. THE DUMORTIERITE IS FOUND AS A DISSEMINATED FIBROUS AGGEGATES AND IN VEINLETS IN QUARTZ LATITE. SOME RYHOLITE PHORPHYRY WAS ALSO MINED.
Deposit ZONING IN THE DIFFERENT METALS. NEARBY ARE HOT SPRINGS CONTAINING METALS IN SOLUTION. PERHAPS THERE IS A CORRELATION TO THE FISSURE FILLING ORE BODIES.
Deposit METASEDIMENT, METAVOLCANICS INTERCALATED SHEARED WITH QUARTZ STRINGERS IN SHEAR ZONE. METASEDIMENTS ARE CARBONIFEROUS. SAMPLES FROM MINE SITE AND ADJACENT AREA (SHEARS) YIELD SAMPLES ANOMALOUS IN PGE. ANOMALOUSLY HIGH VALUES PT PD RH (PPB) 970 21 15 490 14 7.6 480 14 7.1 100 16 2.1
Deposit SIDDER AND MARSH ARE WORKING ON FOLLOW-UP ANALYSIS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1991 Carbonaro, Marguerite M. (Gray, Floyd) U.S. Geological Survey

Beyond USGS

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

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