1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Antofalla Este

Past Producer in Catamarca, Argentina with commodities Lead, Zinc, Silver
Map
XML
JSON
KML
B
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. Reserves and resources
  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 10086659
MRDS ID AR00350
Record type Site
Current site name Antofalla Este
Alternate or previous names Veta Larga: Volcan Antofalla, Los Espanoles, Los Jesuitas

Geographic coordinates

Geographic coordinates: -67.83281, -24.66417 (WGS84)
Elevation 4000
Relative position ANTOFAGASTA DE LA SIERRA A 250KM

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 HASTA ANTOFALLA, REGULAR A CAMPAMENTO (40 KM CON DOBLE TRACCION). AGUA DISPONIBLE (1000M3/DIA). ALTA TENSION A 570KM. CLIMA FRIO,NEVADAS EN INVIERNO

Commodities

Commodity Importance
Lead Primary
Zinc Critical Primary
Silver Primary

Comments on the commodity information

  • PARAGENESIS: GALENA I, BLENDA GRIS, COBRES GRISES---GALENA II, CUARZO SACAROIDE -----BLENDA RUBIA, CUARZO, ALUNITA, CARBONATOS. GRANULOMETRIA DE MEDIANA A FINA. INTERCRECIMIENTOS COMUNES CON LA GANGA PERO RAROS ENTRE LOS SULFUROS. LA GALENA ARGENTIFERA Y LA BLENDA TIENDEN A APARECER EN BANDAS

Alteration

  • (Local) Argilica-Silico-Alunitica, Argilitica-Sericitica

Analytical data

Result ZN 5-6%, PB 4-5%, AG 230-280 G/TN

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic)
    Rock unit name Formation Agua De La Falda
    Rock description Formation Agua De La Falda
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Basamento Metamorfico; Formation Agua De La Falda;Formation Agua Dde La Falda
    Rock description Basamento Metamorfico;Formation Agua De La Falda;Formation Agua Dde La Falda
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Conglomerate

Nearby scientific data

(1) -67.83281, -24.66417
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Bloques Fallados Alineados Submerionalmente Y Volcados
Type of structure Local
Structure description Fracturas N80w I=50n; N74e I=45n; N70w I=38n

Ore body information

  • General form LENTICULAR, BOLSONES
    Strike N 85
    Dip 60
    Thickness 250M
    Length 1000M
    Width 0.5M
    Depth to top 0M
    Depth to bottom 250M

Controls for ore emplacement

  • Estructural Y Litologico

Comments on the geologic information

  • EL BASAMENTO METAMORFICO INTRUIDO POR LOS GABROS ORDOVICICOS Y LAS ARENISCAS,CONGLOMERADOS Y TOBAS DE LA FM CALCHAQUI, ESTAN CUBIERTOS POOR LAS VULCANITAS DE LA FM AGUA DE LA FALDA. EN EL CONTACTO GABRO BASAMENTO HAY MINERALIZACIONES DE CU-AG-CO. EN LA FM CALCHAQUI LOS CONGLOMERADOS SON MAS RECEPTIVOS A LA MINERALIZACION.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1650
Year of last production 1900

Mining district

District name Antofalla Este

Land status

Ownership category State

Ownership information

  • Type Owner
    Owner Direc. Prov Mineria Catamarca. Chacabuco 619 Primero Piso, S.F. De Catamarca

Reserves and resources

  • Type In-situ
    Estimate year 1985
    Commodity Subtype Grade units Group Importance Year
    Lead Pb 4.54 wt-pct Lead Major 1985
    Zinc Zn 7.27 wt-pct Zinc Major 1985
    Silver Ag 272 g/mt Silver Major 1985

Workings at the site

  • Type of workings Surface
    Length 500M
    Overall depth 250M
    Overall length 914.4M
    Overall width 0.5M

Comments on the workings information

  • PARA LA ALTERNATIVA DE MAXIMA SE PROPONEN COMO METODO DE EXPLOTACION: CIRCADO Y REALCE SOBRE SACA, CON RETRACCION HORIZONTAL POR CORTAVETAS, ANTES DE PROFUNDIZAR. RECUPERACION SE ESTIMA EN 85%

Comments on development

  • SIN MAQUINARIAS NI TALLERES, CAMPAMENTO PRECARIO. SE PROPONEN CORTAVETAS Y OTROS LABORESOS EXPLORATORIOS ; TOTAL$: 2000000 ; MILL$: 1000000 ; ECON.YEAR: 1985 ; ECON.COM: EVALUACION CON DOS PROPUESTAS : UNA DE MAXIMA DE ALTA LEY Y UNA DE MINIMA DE LEY BASE, AMBAS TIENEN COEFICIENTE DE RENTABILIDAD POSITIVO (1.25 A 2.99) ; MILL.CAP : 36000

Reference information

Bibliographic references

  • Deposit

    EVALUACION PREVIA 1885. DIREC. NAC. MINERIA. INEDITO

General comments

Subject category Comment text
Deposit YACIMIENTO CON ZONACION VERTICAL DE SULFUROS POLIMETALICOS DE AG, GALENA, BLENDA , EN DOS TIPOS DE GANGA
Deposit Discovery Year: SIGLO XVII
Deposit SE PROPONE UN PLAN DE EXPLORACION SUBTERRANEA CON UN TOTAL DE 800M. EN EL DISTRITO EXISTEN 150 VETAS DE POLIMETALICOS SIMILARES. VIDA DEL YACIMIENTO CALCULADA EN SIETE ANOS ; INFO.SRC : 2 UNPUB REPT; 3 FIELD OBSERV

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1985 Valladares Carrillo, Hildebrando Direccion Nacional de Servicio Geologico, Argentina
Updater 01-SEP-1993 Martinez, Hector Direccion Nacional de Servicio Geologico, Argentina

Beyond USGS

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

Maps centered on this site