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  3. Mineral Resource Data System (MRDS)

San Miguel Mine

Occurrence in Alajuela, Costa Rica with commodities Gold, Manganese
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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. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10007935
MRDS ID CS00173
Record type Site
Current site name San Miguel Mine

Geographic coordinates

Geographic coordinates: -84.46382, 9.97053 (WGS84)

Site location context

Political divisions (FIPS codes)

Alajuela(province)

Costa Rica(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Costa Rica Alajuela

Comments on the location information

  • ON THE SAN MIGUEL VEIN BETWEEN THE SACRA FAMILIA AND COMPANIA VEINS.

Commodities

Commodity Importance
Gold Primary
Manganese Critical Primary

Materials information

Materials Type of material
Quartz Gangue

Analytical data

Result ACCORDING TO REITZ (1902), GRADE WAS $15-$70/T AU. CHAVES (1974) INDICATES THAT GRADE AVERAGED 24.88 G/T AU AND 65.31 G/T AG

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) -84.46382, 9.97053
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Economic information

Ore body information

  • General form VEIN
    Strike N 37 E
    Dip VERTICAL
    Width 10M

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1826

Mining district

District name Aguacate District

Comments on development

  • MINE WORKED PROFITABLY UNTIL AFTER 1862.

Reference information

Bibliographic references

  • Deposit

    ATTWOOD, GEORGE, 1882, ON THE GEOLOGY OF A PART OF COSTA RICA: GEOL. SOC. LONDON, QUART. J. V. 38, P. 328-329.

  • Deposit

    REITZ, M. F., 1902, THE GOLD MINES OF COSTA RICA: ENG. MIN. J., V. 74, NO. 7, P. 211.

  • Deposit

    CHAVES, R., 1974, THE AGUACATE MINES OF COSTA RICA; GEOLOGY AND APPRAISAL: COSTA RICA, DIR. GEOL. MINAS PETROL., INF. TEC. NOTAS GEOL., ANO 12, NO. 57, P. 6.

  • 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 OUTCROP OF QUARTZ VEIN CAN BE TRACED ON THE SURFACE FOR ABOUT 700 M.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1986 Howe, Stephen 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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