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San Martin Mine

Past Producer 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. Mining district
  14. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10097771
MRDS ID CS00131
Record type Site
Current site name San Martin Mine
Alternate or previous names Tres Amigos Mine, Veins: San Rafael, Fortuna, Negra, Loca, Pajuila

Geographic coordinates

Geographic coordinates: -84.92772, 10.29968 (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

Comments on the location information

  • INCLUDES THE SAN MARTIN, SAN RAFAEL, FORTUNA, NEGRA, LOCA, AND PAJUILA VEINS.

Commodities

Commodity Importance
Gold Primary
Silver Primary

Materials information

Materials Type of material
Chalcopyrite Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) One Alteration Type Is A Silicification And Pyritization; A Second Type May Be Dominated By Chlorite

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) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite

Nearby scientific data

(1) -84.92772, 10.29968
ListMap

Economic information

Ore body information

  • General form VEIN
    Length 1000M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No

Mining district

District name Abangares District

Ownership information

  • Type Owner
    Owner Milafor, S. A.; Ariel Resources .
    First year 1990

Comments on the production information

  • AU (1994) FIRST 6 MONTHS, AU (1993) LAST SIX MONTHS IN MATAPALO MILL WHICH ALSO PRODUCES FROM TRES HERMANOS; IN 2ND QUARTER OF 1994 PROCESSED 20,778 TONS GRADING 0.145 OZ/TON AU.

Comments on development

  • NOT OPERATED FOR LAST 5 YEARS; REOPENED AND BEGAN PRODUCTION IN 1993; ORE IS PROCESSED IN THE MATAPALO MILL.

Reference information

Bibliographic references

  • Deposit

    ROBERTS, R. J., AND IRVING, E. M., 1957, MINERAL DEPOSITS OF CENTRAL AMERICA, WITH A SECTION ON MANGANESE DEPOSITS OF PANAMA, BY F. S. SIMONS: U.S. GEOLOGICAL SURVEY BULLETIN 1034, 105 P.

  • Deposit

    CASTILLO M., ROLANDO, 1984, GEOLOGIA DE COSTA RICA; UNA SINOPSIS: SAN JOSE, EDITORIAL DE LA UNIVERSIDAD DE COSTA RICA, P. 143.

  • Deposit

    GIOVANI SOSTO, MINE OWNER, ORAL COMMUNICATION, 1986.

  • Deposit

    ORGANIZACION DE LOS ESTADOS AMERICANOS, 1978, DIAGNOSTICO DEL SECTOR MINERO: SAN JOSE, ORGANIZACION DE LOS ESTADOS AMERICANOS, 91 P.

  • Deposit

    ANON., 1994, ARIEL'S SAN MARTIN MINE PROCEEDING ON SCHEDULE: LATIN AMERICAN MINING NEWS, JUNE 8, 1994, P. 52.

  • Production

    ANON. (1994).

General comments

Subject category Comment text
Deposit MASSIVE QUARTZ VEINS. SAN RAFAEL VEIN AND VETA NEGRA INTERSECT TO FORM THE RICH SAN RAFAEL ORESHOOT.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1986 Cox, Dennis P. U.S. Geological Survey
Updater 01-SEP-1994 Page, Norman J. U.S. Geological Survey
Updater 07-MAR-1995 Page, Norman J. U.S. Geological Survey

Beyond USGS

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

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