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Infiernillo Cu Prospect

Prospect in Argentina with commodities Copper, Molybdenum, Lead, Zinc, Arsenic
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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. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10068823
MRDS ID W002081
Record type Site
Current site name Infiernillo Cu Prospect

Geographic coordinates

Geographic coordinates: -68.83278, -34.5808 (WGS84)
Elevation 1700
Relative position 50 KM W OF SAN RAFAEL, ACCESS BY HIGHWAY 144

Site location context

Political divisions (FIPS codes)

Argentina(country)

South America(continent)

Land(continent)

Geographic areas

Country
Argentina

Comments on the location information

  • COORDINATES ARE APPROX. CENTER OF RESERVE AREA OF 180 SQ KM TOPOGRAPHIC RELIEF IS MODERATE, RARELY MORE THAN 200 M. DRAINAGE SYSTEM POORLY DEVELOPED

Commodities

Commodity Importance
Copper Tertiary
Molybdenum Tertiary
Lead Tertiary
Zinc Critical Tertiary
Arsenic Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Calcite Gangue
Hematite Gangue
Quartz Gangue

Alteration

  • (Local) Bleached Zone 200 X 500 M Around Quartz Plug. Hydrothermal Alteration Of Dacitic Porphyry Evidenced By Bleaching And Leaching. Process Probably Accompanied By Direct Magmatic Activity Of Late Residual Fluids Injected Into Rock. Zone Of Silicification Mapped.

Analytical data

Result IN DDH 7 CU VALUES OBTAINED WERE 1.05%, 230-235 FT.
Result 0.9%, 270-295 FT.
Result 0.68%, 650-655 FT. VALUES OF CU & MO IN HYDROTHERMALLY ALTERED DACITE PORPHYRY WERE CU, 0.1% AND MO, 0.01%

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock
    Rock unit name Quartz Intrusive (Plug) In Dacitic Porphyry;Dacitic Porphyry;Tuffs
    Rock description Quartz Intrusive (Plug) In Dacitic Porphyry;Dacitic Porphyry;Tuffs
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite
    Rock unit name Sedimentary Rocks;Metasedimentary Rocks
    Rock description Sedimentary Rocks;Metasedimentary Rocks

Nearby scientific data

(1) -68.83278, -34.5808
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description N-Trending Folded And Faulted Ranges East Of Principal Cordillera. Pal Rocks Intruded By Intermediate To Felsic Plutons. Faults Of 5000-M Displacement On Eastern Frontal Cordillera
Type of structure Local
Structure description Dacitic Porphyry Intrudes Older Rocks & Is Cut By Small Nnw & Nne-Striking Basalt Dikes Faults And Fractures Of Quartz-Calcite Veinlets Are In Area. In Center Of Dacitic Porphyry Is Intrusive Plug Of Massive Barren Quartz, 200 M N-S, 60 M Across, Which Dominates Relief

Ore body information

  • General form DACITE STOCK IS ROUGHLY OVAL
    Length 4500M
    Width 3500M

Controls for ore emplacement

  • Structural Control Of Primary Sulfide As Evidenced By Linear N-S Orientation. Control Seen Along Major Faults By Anomalous Values Of Cu, Mo, Pb, Zn, As

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Significant No
Discoverer Present Work By United Nations And Gov'T Of Argentina

Ownership information

  • Type Owner
    Owner Government Of Argentina

Comments on the production information

  • NO DATA AVAILABLE

Comments on the reserve resource information

  • DEPOSIT CLASSED AS MEDIUM 3% PB, 4% ZN, 500 G/T AG

Comments on the workings information

  • DEPOSIT CONSISTS OF 40 VEINS THAT STRIKE E-W AND NW-SE AND DIP 75 DEG N. AND VERTICAL
  • SIZE IS OF MINERALIZED AREA. DIMENSIONS ARE FOR DACITE STOCK

Comments on development

  • ECON.COM: $500,000 FOR FEASIBILITY STUDY
  • U.N. PROJECT INCLUDED GEOCHEMICAL SAMPLING, GEOPHYSICAL INDUCED POLARIZATION (IP) SURVEY AND DRILLING OF 18 BOREHOLES TOTALLING 10,000 FT. ; ECON.COM: CATEGORIZED IN UNDP, 1970, REF. IN GROUP A. "MOST PROMISING AREA FROM AN ECONOMIC POINT OF VIEW".

Reference information

Bibliographic references

  • Deposit

    UNITED NATIONS DEVELOPMENT PROGRAMME, 1970, INVESTIGATION OF PORPHYRY COPPER TYPE MINERALIZATION IN THE PROVINCES OF MENDOZA, NEUQUEN, AND SAN JUAN, ARGENTINA: NEW YORK, UNITED NATIONS, P. 238-244.

  • Deposit

    UNITED NATIONS DEVELOPMENT PROGRAMME, 1970, INVESTIGATION OF PORPHYRY COPPER-TYPE MINERALIZATION IN THE PROVINCES OF MENDOZA, NEUQUEN, AND SAN JUAN, ARGENTINA: NEW YORK, UNITED NATIONS, P. 238-244.

  • Deposit

    1966 DIREXPL UNITED NATIONS, GOV'T OF ARGENTIN

General comments

Subject category Comment text
Deposit 40 VEINS IN 2 SYSTEMS, ONE ORIENTED E-W, THE OTHER NW-SE WITH AN INCLINATION TO THE N OF 70 TO 80 DEGREES TO VERTICAL.
Deposit MOST IMPORTANT VEINS ARE: ALCAPARROSA, VETILLA, VALLEJO, SANTA RITA, ROSARIO, BELEN, TAJO, SAN LORENZO, FLORIDA, AND TRINIDAD. ; INFO.SRC : 1 PUB LIT
Deposit FAVORABLE CHARACTERISTICS FOR "RESERVING" THE AREA ARE EVIDENCE OF STRONG CU AND MO ANOMALIES WHICH FORM A RING AROUND THE QUARTZ PLUG & EVIDENCE OF MINERALIZATION IN BOULDERS AND IN QUARTZ VEINS. INTENSE PENEPLANATION IN AREA MAY HAVE REMOVED IMPORTANT CU MINERALIZED ZONES ABOVE THE ROOTS OF THE INTRUSIVE, BUT IT IS POSSIBLE SECONDARY ENRICHED DEPOSITS MAY HAVE FORMED BELOW THE ERODED ZONES AND THEREFORE COULD BE QUITE CLOSE TO THE SURFACE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1973 Davidson, Claire B. U.S. Geological Survey

Beyond USGS

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

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