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Rio Chiquito Mine

Occurrence in Guanacaste, 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 10007886
MRDS ID CS00120
Record type Site
Current site name Rio Chiquito Mine

Geographic coordinates

Geographic coordinates: -84.868, 10.43856 (WGS84)

Site location context

Political divisions (FIPS codes)

Guanacaste(province)

Costa Rica(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Costa Rica Guanacaste

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Argentite Ore
Gold Ore
Marcasite Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Prophylitic, Silicification, Oxidation

Analytical data

Result 2.84 G/T AU
Result 62.95 G/T AG. MAXIMUM GRADES OF 350 SAMPLES ASSAYED: 20.2 G/METRIC T AU
Result 96 G/METRIC T AG.

Mineral occurrence model information

Model code 104
USGS model code 25a
Deposit model name Hot-spring Au-Ag
Mark3 model number 45

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff

Nearby scientific data

(1) -84.868, 10.43856
ListMap

Economic information

Ore body information

  • General form VEIN
    Strike NW
    Dip 50 E

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Owner
    Owner Mallon Minerals Corp. (Mallon Resources)

Comments on the production information

  • ORE (1) TREATED IN PILOT PLANT.

Comments on the reserve resource information

  • MINING JOURNAL IS REFERRING TO "MINERALIZED MATERIAL"

Comments on the workings information

  • 2,000 M OF CORE DRILLED DURING 12 MONTH EXPLORATION PROGRAM. OPEN PIT.

Comments on development

  • PROPERTY IS 2,800 HA

Reference information

Bibliographic references

  • Deposit

    MINING JOURNAL, 1984. MIN. J., V. 303, NO. 7783, P. 276.

  • Deposit

    DIRECCION GENERAL DE GEOLOGIA, MINAS E HIDROCARBUROS (DGMH) UNPUBLISHED FILES VIEWED 1986.

  • 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.

  • Deposit

    ANON., 1993, COSTA RICAN GOLD MINE PLANNED: MINING JOURNAL LONDON, OCTOBER 29, 1993, V. 321, NO. 8248, P. 297.

  • Production

    ANON. (1993).

General comments

Subject category Comment text
Deposit OWNER NEEDS ADDITIONAL FUNDING; WILL APPROACH THE AGENCY FOR INTERNATIONAL DEVELOPMENT. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit ZONE TRENDS NW AND DIPS 50 E AND MAY REPRESENT A VEIN OR VEINS, AS ASSAYED SAMPLES WERE COLLECTED ACROSS WIDTHS OF 10 M. SEVEN GOLD ANOMALIES HAVE BEEN DRILLED UP TO OCT. 1993.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1986 Howe, Stephen S. (Cox, Dennis P.) U.S. Geological Survey
Updater 01-JAN-1994 Page, Norman J. U.S. Geological Survey PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD
Editor 27-APR-1995 Mosier, Dan U.S. Geological Survey

Beyond USGS

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

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