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  3. Mineral Resource Data System (MRDS)

El Fierro Bajo

Past Producer in San Juan, Argentina with commodities Silver, Zinc, Lead
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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. Economic information about the deposit and operations
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10005537
MRDS ID AR16076
Record type Site
Current site name El Fierro Bajo
Alternate or previous names Principal Mines: Felicidad & Rara Fortuna

Geographic coordinates

Geographic coordinates: -69.36617, -29.43079 (WGS84)
Elevation 3500
Relative position 60 KM NNW OF MALIMAN ABAJO

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

  • ALONG RIO EL FIERRO

Commodities

Commodity Importance
Silver Primary
Zinc Critical Primary
Lead Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore
Sphalerite Ore
Tetrahedrite Ore
Barite Gangue
Calcite Gangue
Quartz Gangue

Alteration

  • (Local) Propylitization & Uralitization Of Postplutonic Dikes. To 20-25m : Oxidation Of Deposit Near Surface To : Anglesite, Cerussite, Quarts, Gypsum, Calcite, Barite, Malachite, Azurite, & Clay.

Analytical data

Result 100 SAMPLES: AROUND 1.5% PB & ZN, 230-412 G/T AG

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Cerro Agua Negra Formation-Low Grade Metasediments (Sandstones & Shale);Colanguit Plutonic Complex-Granites & Granodiorites;Post Plutonic Dikes
    Rock description Cerro Agua Negra Formation-Low Grade Metasediments (Sandstones & Shale);Colanguit Plutonic Complex-Granites & Granodiorites;Post Plutonic Dikes
    Stratigraphic age (youngest) Late Permian

Nearby scientific data

(1) -69.36617, -29.43079
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Ne-Sw & N-S Fracture Sets
Type of structure Local
Structure description Metasediments: Strike N70w, Dip 60sw

Ore body information

  • Strike N45-75W
    Dip 55-65SW
    Length 800M
    Width 7.5M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No
Production years LATE 1800'S EARLY 1900'S NEWLY EXPLORED & WORKED IN 1940

Comments on the production information

  • AG CONTENT ONLY

Comments on the workings information

  • 30 WORKINGS IN DISTRICT

Reference information

Bibliographic references

  • Deposit

    ANGELELLI, V., 1984, YACIMIENTOS METALIFEROS DE LA REPUBLICA ARGENTINA: LA PLATA, PROVINCIA DE BUENOS AIRES, COMISION DE INVESTIGACIONES CIENTIFICAS, VOL. II, P. 539-540

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit WIDTH FOR FELICIDAD & RARA FORTUNA

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1993 Venable, Margaret U.S. Geological Survey

Beyond USGS

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

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