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Cuatro Amigos, Mina

Past Producer in San Juan, Argentina with commodities Lead, Silver, Zinc
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Reserves and resources
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10004163
MRDS ID AR00304
Record type Site
Current site name Cuatro Amigos, Mina

Geographic coordinates

Geographic coordinates: -69.61617, -30.86413 (WGS84)
Relative position SAN JUAN 180 KM AL SE

Site location context

Political divisions (FIPS codes)

San Juan(province)

Argentina(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Argentina San Juan

Comments on the location information

  • ACCESO BUENO, MANO DE OBRA Y AGUA DISPONIBLE, ALTA TENSION A 22 KM (VILLANUEVA). FOTOS AEREAS 212-6937-D2620 (DPM)

Commodities

Commodity Importance
Lead Primary
Silver Primary
Zinc Critical Primary

Comments on the commodity information

  • PARAGENESIS: PIRITA, GALENA, BLENDA, FREIBERGITA, CALCOPIRITA, CUARZO, SIDERITA, CALCITA, CALCEDONIA. NO SE OBSERVA ZONACION PRIMARIA.

Materials information

Materials Type of material
Galena Ore
Calcite Gangue

Alteration

  • (Local) Propilitica, Silicica Y Argilitica Suave

Analytical data

Result PB 14,93%, AG 301 PPM, ZN 14,7%

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name La Contra;Atutia;Plutonismo Varisico;Vulcanismo Varisico;Plutonismo Tardio-Varisico;Castano Nuevo;Bordos Del Castano
    Rock description La Contra;Atutia;Plutonismo Varisico;Vulcanismo Varisico;Plutonismo Tardio-Varisico;Castano Nuevo;Bordos Del Castano

Nearby scientific data

(1) -69.61617, -30.86413
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Homoclinal, Buzando Suavemente Al Este. Fallamiento Inverso N-S Y Fallamiento De Alivio E-W
Type of structure Local
Structure description Fallamiento E-W De Canal De Ascenso De La Mineralizacion

Ore body information

  • General form RELLENO DE FISURAS
    Strike E-W
    Dip SUBVERTICAL

Controls for ore emplacement

  • Estructural, Fallamiento

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1957
Year of last production 1972
Production years 15

Mining district

District name No. 6 Castano Viejo

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Aguilar Y Borcosque S.R.L. Sarmiento 270 (S), Tercero "B". San Juan.

Reserves and resources

  • Type In-situ
    Estimate year 1986
    Total resources 74000mt ore
    Commodity Subtype Grade units Group Importance Year
    Lead Pb 6.18 wt-pct Lead Major 1986
  • Type In-situ
    Estimate year 1986
    Commodity Subtype Grade units Group Importance Year
    Lead Pb 6.18 wt-pct Lead Major 1986

Comments on the reserve resource information

  • RECURSOS 146.500 TON
  • RESERVAS INDICADAS

Workings at the site

  • Type of workings Underground
    Area 30HA

Comments on the workings information

  • LABOREO ANTIGUO: RAJOS PIQUES Y GALERIAS SOBRE ESTRUCTURA PRINCIPAL. LABOREO MODERNO: GALERIAS SOBRE VETA NIVELES 4-5 Y 6, TOTAL 400 M, CONECTADOS POR DOS PIQUES INTERNOS.

Comments on development

  • METODO DE EXPLOTACION REALCE SOBRE SACA. EXTRACCION MANUAL HASTA BUZONES Y DECAUVILLE HASTA BALDE EN PIQUE. SALIDA POR NIVEL 4 POR VAGONETAS MANUALES. ; TOTAL$: 1.1 ; ECON.YEAR: 1986 ; ECON.COM: BAJO COEFICIENTE DE RENTABILIDAD (0.026) ; MILL.CAP : 27.500 TON/ANO

Reference information

Bibliographic references

  • Deposit

    EVALUACION PREVIA GTZ, 1986, CARPETA J0016-01. DIR. NAC. DE MINERIA (INEDITO)

  • Production

    EVALUACION PREVIA GTZ, CARPETA J0016-01

  • Reserve-Resource

    EVALUACION PREVIA GTZ, 1986

General comments

Subject category Comment text
Deposit VETA PRINCIPAL: 430*0.4*200 M; VETA 2: 250*0.23*150 M; VETA NORTE: 100*0.8*50 M.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1986 Pelichotti, Ruben O. Direccion Nacional de Mineria, Argentina
Updater 01-AUG-1993 Martinez, Hector (Nieto, Diego Silva) Direccion Nacional de Servicio Geologico, Argentina

Beyond USGS

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

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