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Cerro La Mina Prospect

Occurrence in Puntarenas, Costa Rica with commodities Gold, Silver
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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. Economic information about the deposit and operations
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10007917
MRDS ID CS00154
Record type Site
Current site name Cerro La Mina Prospect

Geographic coordinates

Geographic coordinates: -84.65827, 10.04969 (WGS84)

Site location context

Political divisions (FIPS codes)

Puntarenas(province)

Costa Rica(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Costa Rica Puntarenas

Comments on the location information

  • 6 KM NE FROM PAN AMERICAN HIGHWAY AT BARRANCA.

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Jasper Gangue
Pyrite Gangue

Alteration

  • (Local) Alteration Zone Of Silicification And Abundant Fe Oxides.

Mineral occurrence model information

Model code 151
USGS model code 25d
Deposit model name Epithermal vein, Sado
Mark3 model number 28

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -84.65827, 10.04969
ListMap

Economic information

Ore body information

  • General form VEIN
    Strike N 70 W
    Dip SW

Comments on the geologic information

  • THE ANDESITE IS CUT BY A LARGE RHYOLITE DIKE STRIKING N 45 W AND DIPPING VERTICALLY AND IS ADJACENT TO A RHYOLITE DOME. IN ADDITION TO A PERVASIVE SILICIFICATION OF AND ADJACENT TO THE RHYOLITE DIKE, THE ANDESITE IS ALTERED TO CLAYS AND IRON OXIDES UP TO 200 M FROM THE DIKE. THE ANDESITE AND RHYOLITE DIKE ARE CUT BY THE STOCKWORK OF VEINS, RESULTING IN MUCH BRECCIATION AND RESILICIFICATION.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Owner
    Owner Cerros Negros, S. A. (Homestake)

Comments on development

  • CERROS NEGROS, S. A. (HOMESTAKE) MADE GEOCHEMICAL SURVEYS 1976-1977. PRESENTLY INACTIVE.

Reference information

Bibliographic references

  • Deposit

    VISITED BY USGS SCIENTISTS 1986.

  • Deposit

    U.S. GEOLOGICAL SURVEY, DIRECCION GENERAL DE GEOLOGIA, MINAS E HIDROCARBUROS, UNIVERSIDAD DE COSTA RICA, 1987, MINERAL RESOURCE ASSESSMENT OF THE REPUBLIC OF COSTA RICA: U.S. GEOLOGICAL SURVEY MISCELLANEOUS INVESTIGATION SERIES MAP I-1865, 75 P.

General comments

Subject category Comment text
Deposit ZONE OF IRREGULAR STOCKWORK AND ALTERATION. VEINS STRIKE N 70 W, DEP SW.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1986 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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