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Bajo De La Alumbrera

Occurrence in Catamarca, Argentina with commodities Gold, 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. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Reserves and resources
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10094118
MRDS ID AR00332
Record type Site
Current site name Bajo De La Alumbrera

Geographic coordinates

Geographic coordinates: -66.80777, -27.29746 (WGS84)
Elevation 2650
Relative position 95 KM NE DE BELEN, 79 KM NW DE ANDALGALA

Site location context

Political divisions (FIPS codes)

Catamarca(province)

Argentina(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Argentina Catamarca

Comments on the location information

  • ACCESO BUENO, ESCASA DISPONIBILIDAD DE AGUA, MANO DE OBRA DISPONIBLE, CLIMA SECO, CALIDO. SE HALLA 8KM EN LINEA RECTA HACIA EL SE DE LAS VETAS AURO-MANGANIFERAS DE FARALLON NEGRO.FOTOGRAFIA AEREA 2767-406-9,10 Y 11 (ESC. 1:50.000) PLAN NOA, MOSAICO 24 B-2

Commodities

Commodity Importance
Gold Primary
Copper Primary

Comments on the commodity information

  • LAS ESPECIES METALICAS HIPOGENICAS SON SON: PIRITA, EN GRANOS DE HASTA 600 MICRONES; CALCOPIRITA, MAGNETITA, ORO EN CHISPAS PEQUENAS, ESCASA BORNITA Y MOLIBDENITA (LA GRANULOMETRIA OSCILA EN GENERAL ENTRE 200 Y 300 MICRONES)

Alteration

  • (Local) Buen Desarrollo, Zonada, En Forma Concentrica Potasica, Filica, Y Propilitica.

Mineral occurrence model information

Model code 53
USGS model code 17
Deposit model name Porphyry Cu
Mark3 model number 4

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
    Rock unit name Intrusivos Plutonicos;Complejo Volcanico Farrallon Negro
    Rock description Intrusivos Plutonicos;Complejo Volcanico Farrallon Negro
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Miocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Basamento Metamorfico; Formation Calchaqui;Formation Araucana
    Rock description Basamento Metamorfico;Formation Calchaqui;Formation Araucana

Nearby scientific data

(1) -66.80777, -27.29746
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Economic information

Geologic structures

Type of structure Regional
Structure description Bloques Submeridionales, Limitados Por Fallas Inversas. Se Destacan Dos Conjuntos De Fracturas De Rumbo Nw (Coincidentes Con Los Diques) Y Ne (Que Conecta Al Bajo De La Alumbrera Con El Bajo Del Durazno)
Type of structure Local
Structure description El Paquete Volcanico Esta Plegado, Hundido Al Se, Con Tres Pliegues Secundarios En Su Extremo Levantado.

Controls for ore emplacement

  • Estructural

Comments on the geologic information

  • EL CONJUNTO VOLCANICO ESTA CONSTITUIDO POR UN PAQUETE EFUSIVO LEVENTE PIROCLASTICO, SUBHORIZONTAL, INTRUIDO POR CUERPOS HIPABISALES ANDESITICOS. A SU VEZ, ESTE CONJUNTO ES ATRAVEZADO POR UN CICLO DACITICO, SUBVOLCANICO, EN FILONES NE-SE AGRUPADOS EN UNA FRANJA CENTRAL Y COINCIDIENDO EN SU PARTE MEDIA CON EL CUERPO MINERALIZADO.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1963
Discoverer A.M. Mazzetti Y R.G. Sister

Mining district

District name Hualfin

Land status

Ownership category State

Ownership information

  • Type Operator
    Owner Musto Exploration Ltd.
  • Type Owner
    Owner Musto Exploration Ltd. (Contrato Con Ymad, Yacimientos Minerales Agua De Dionisio - Dr. Patricio

Reserves and resources

  • Type In-situ
    Estimate year 1993
    Commodity Subtype Grade units Group Importance Year
    Gold Au 0.7 g/mt Gold Major 1993
    Copper Cu 0.4 wt-pct Copper Major 1993
  • Type In-situ
    Estimate year 1993
    Commodity Subtype Grade units Group Importance Year
    Gold Au 0.91 g/mt Gold Major 1993
    Copper Cu 0.63 wt-pct Copper Major 1993

Comments on development

  • EXPLORATION BY KAISER (1978), SELTRUST (1981), I.D.E.M.S.A. (1987), OTTO GOLD (1988), LA SECRETARIA DE MINERIA REALIZO UN INTENSO PROGRAMA EXPLORATORIO.

Reference information

Bibliographic references

  • Deposit

    DIRECCION NACIONAL DE MINERIA Y GEOLOGIA, 1991, REPORT ON THE ARGENTINE MINING SECTOR, ARGENTINE SELECTED MINING PROJECT: BUENOS AIRES.

  • Deposit

    SUCHOMEL, B.J., 1988, LITTLE-EXPLORED AREA OF ARGENTINA SHOWS BASE AND PRECIOUS METALS POTENTIAL: MINING ENGINEERING, VOL. 40, NO. 8, P. 800-803.

  • Deposit

    STULTS, ANDREW, 1985, GEOLOGY OF THE BAJO LA ALUMBRERA PORPHYRY COPPER AND GOLD PROSPECT, CATAMARCA PROVINCE, ARGENTINA: TUCSON, ARIZONA, UNIVERSITY OF ARIZONA MS THESIS, 75 P.

  • Deposit

    ANGELELLI V. 1984. YACIMIENTOS METALIFEROS DE LA REPUBLICA ARGENTINA. C.I.C. LA PLATA.

  • Deposit

    DIRECTORIO DE OPORTUNIDADES DE INVERSION EN MINERIA EN LA REP. ARGENTINA. 1993. SECR. DE MINERIA. BUENOS AIRES.

  • Reserve-Resource

    DIRECTORIO DE OPORTUNIDADES DE INVERSION EN MINERIA. SECR. DE MINERIA

General comments

Subject category Comment text
Deposit EL YACIMIENTO ESTA LIGADO A UNA CUBETA ELIPSOIDAL DE FONDO SEMIPLANO, LAS FAJAS DE ALTERACION HIDROTERMAL SE AJUSTAN A ESE MODELO, BORDE PROPILITICO, FONDO CUBETA FILICA, Y SU CENTRO POTASICO-SILICICO.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1991 Autores Varios Direccion Nacional de Mineria, Argentina
Updater 01-SEP-1993 Diego Silva Nieto 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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