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El Milagro, Mina

Past Producer in La Rioja, Argentina with commodities Tungsten, Bismuth, Copper
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Alteration
  7. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Production statistics
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10004134
MRDS ID AR00264
Record type Site
Current site name El Milagro, Mina

Geographic coordinates

Geographic coordinates: -67.59945, -29.49745 (WGS84)
Elevation 2000
Relative position 30 KM SSW DE CHILECITO

Site location context

Political divisions (FIPS codes)

La Rioja(province)

Argentina(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Argentina La Rioja

Comments on the location information

  • ACCESO REGULAR, VEHICULOS DE DOBLE TRACCION, MANO DE OBRA DISPONOBLE, ALTA TENSION A 27 KM, FOTOS AEREAS NO. 206/25/1928-30

Commodities

Commodity Importance
Tungsten Critical Primary
Bismuth Critical Tertiary
Copper Tertiary

Comments on the commodity information

  • LA WOLFRAMITA SE PRESENTA COMO CRISTALES TABULARES IDIOMORFOS, AISLADOS O EN AGREGADOS, DISTRIBUIDOS AL AZAR, AUNQUE PREDOMINAN EN LA PARTE CENTRAL DE LA VETA DE CUARZO. LA VETA PRESENTA TENDENCIA A MOSTRAR SECTORES CENTRALES MAS RICOS. NO HAY ENRIQUECIMIENTO SECUNDARIO. LA SCHELLITA REEMPLAZA A LA WOLFRAMITA Y PREDOMINA EN LOS HASTIALES.

Alteration

  • (Local) Greisenizacion

Analytical data

Result WO3 0.5-0.7 %, BI 0.2%, CU 0.3%

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Tonalite
    Rock unit name Formation Nunorco
    Rock description Formation Nunorco
    Stratigraphic age (youngest) Late Devonian
    Stratigraphic age (youngest) Late Devonian
    Stratigraphic age (youngest) Late Devonian
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -67.59945, -29.49745
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Bloques Alineados N-S, Escalonados E-W
Type of structure Local
Structure description Fallas Nw-Se

Ore body information

  • General form VETIFORME
    Strike N 45-60 W
    Dip 50-60 NE

Controls for ore emplacement

  • Estructural

Comments on the geologic information

  • LAS SOLUCIONES HIDROTERMALES POS-OROGENICAS ALTERAN EL GRANITO NUNORCO FORMANDO LA FAJA DE GREISSEN DONDE ESTAN ALOJADAS LAS VETAS DE CUARZO QUE PORTAN EL W, EL GREISSEN SE HALLA MINERALIZADO

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1962
Discoverer Quinteros, Juan Santos
Year of first production 1977
Year of last production 1982
Production years 5 ANOS

Mining district

District name Vichigasta

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Idem
  • Type Owner
    Owner Ramaccioni, Leonardo F.

Production statistics

  • Year 1980
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major WO3 Tungsten Tungsten 66wt-pct
  • Year 1981
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major WO3 Tungsten Tungsten 65wt-pct
  • Year 1982
    Period 1977-1982
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major WO3 Tungsten Tungsten 65wt-pct
  • Year 1982
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major WO3 Tungsten Tungsten 65wt-pct

Comments on the production information

  • DATOS DE PRODUCCION ESTIMADOS

Comments on the reserve resource information

  • RECURSOS: 12.500 TN

Workings at the site

  • Type of workings Underground
    Area 12HA

Comments on the workings information

  • LABORES EN VETA SUR: 4 GALERIAS DIRECCIONALES DE 31M EN TOTAL (LABORES 1 A 4), EN VETA NORTE: 2 GALERIAS DIRECCIONALES DE 20M TOTAL, RAJO DE 10M (LABORES 5-6-7)

Comments on development

  • SISTEMA DE EXPLOTACION: GALERIAS Y RAJOS SOBRE VETA, EXTRACCION POR CARRETILLAS, SIN INSTALACIONES NI MAQUINARIA, RECILECCION MANUAL Y CONCENTRACION POR MARIMATA ; TOTAL$: 1.2 ; EXPL$: 0.25 ; DEV$: 0.2 ; MILL$: 0.45 ; EXPAN$: 0.3 ; ECON.COM: EL VALOR NEGATIVO DEL COEFICIENTE DE RENTABILIDAD CALCULADO EN LA EVALUACION PREVIA FONEM 1987, HACE ESTE PROYECTO NO VIABLE, POR PERTENECER A UN AREA DONDE SE ENCUENTRAN EMPLAZADOS VARIOS YACIMIENTOS SIMILARES (LA JOSEFA, EL CHACHO, EL RICO, ETC.) SE PROPONE EL ESTUDIO DEL DISTRITO COMO UN OBJETIVO COMUN ; MILL.CAP : 50 TN/D

Reference information

Bibliographic references

  • Deposit

    EVALUACION PREVIA FONEM 1987 CARPETA F-0001-00. DIREC.NAC.MINERIA INEDITO

  • Production

    EVALUACION PREVIA FONEM 1987

General comments

Subject category Comment text
Deposit VETA NORTE: 300M*0.15M*120M, VETA SUR: 210M*02M*100M

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1987 Cravero, Osvaldo Direccion Nacional de Mineria, Argentina
Updater 01-MAR-1992 Martinez, Hector Direccion Nacional de Mineria, Argentina

Beyond USGS

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

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