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La Barrera Mine

Past Producer in Mendoza, Argentina with commodities Copper, Nickel, Cobalt, Silver, Zinc
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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 10061550
MRDS ID TC34461
Record type Site
Current site name La Barrera Mine

Geographic coordinates

Geographic coordinates: -69.35586, -33.32829 (WGS84)
Elevation 2300
Relative position 29 KM W OF TUPUNGATO

Site location context

Political divisions (FIPS codes)

Mendoza(province)

Argentina(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Argentina Mendoza

Comments on the location information

  • IN FOOTHILLS OF PORTILLO RANGE, SOUTH OF RIO LAS TUNAS

Commodities

Commodity Importance
Copper Primary
Nickel Critical Secondary
Cobalt Critical Secondary
Silver Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Goethite Ore
Malachite Ore
Pyrrhotite Ore
Sphalerite Ore
Actinolite Gangue
Quartz Gangue
Talc Gangue

Alteration

  • (Local) Oxidation: Gossan 1-15 M Thick

Analytical data

Result 11 SAMPLES (1 GABBRO, 1 CLINOPYROXENITE, 6 WHERLITE, 2 ORE): 0.8 - 9.9 PPB PT
Result <0.8 - 9.5 PPB PD
Result <0.5-1.8 PPB RH
Result <5 - 10 PPB RU
Result 0.6 - 3.3 PPB IR

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock
    Stratigraphic age (youngest) Paleocene
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Harzburgite
  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite

Nearby scientific data

(1) -69.35586, -33.32829
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Steeply Dipping Ne Shear Zones And Faults

Ore body information

  • Thickness 2M

Comments on the geologic information

  • LA BARRERA ULTRAMAFIC COMPLEX CONSISTS OF METAMORPHOSED OLIVINE, PYROXENE, AND BOTH CUMULATES, NOW SERPENTINIZED, REACTION (METASOMATIC) ROCKS AT BORDERS CONTAINING AMPHIBOLES, TALC, BIOTITE. IT WAS TECTONICALLY EMPLACED IN SEDIMENTARY VOLCANIC ROCKS BEFORE FOLDING AND METAMORPHISM. AFTER METAMORPHISM WAS PARTLY ALTERED BY HYDROTHERMAL ACTIVITY. MANY OF ULTRAMAFIC ROCKS HAVE METAMORPHIC TEXTURES. COMPLEX PROBABLY CUMULATE PART OF OPHIOLITE. TO EAST, 1-2 KM, IS GRANODIORITE, DIORITE, QUARTZ DIORITE, GABBRO PLUTON THAT PRODUCED HYDROTHERMAL ACTIVITY.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Comments on the production information

  • APPEARED TO BE MINED OUT IN MAY 1993.

Comments on development

  • 1946-1948 BY FABRICACIONES MILITARES: 6 DRILL HOLES

Reference information

Bibliographic references

  • Deposit

    PAGE, N.J., FIELD EXAMINATION, MAY 1993.

  • Deposit

    ANGELLI, VICTORIA, 1984, YACIMIENTOS METALIFEROS DE LA REPUBLICA ARGENTINA, VOL. I: BUENOS AIRES, COMISION DE INVESTIGACIONES CIENTIFICAS, P. 163-166.

  • Deposit

    VILLAR, L.M., SEGAL, S.J., AND PAGE, N.J., 1991, PRESENCIA DE PLATINOIDES EN LA FRANJA MAFICO ULTRAMAFICO DE LA CORDILLERA FRONTAL DE MENDOZA, ARGENTINA. SU SIGNIFICADO: 6TH CONGRESO GEOLOGICO DE CHILE, ACTAS, RESUMENES EXPANDIDOS, V. 1, P./ 688-692.

  • Other Database

    CIMRI

  • Production

    PAGE (1993)

General comments

Subject category Comment text
Deposit ORE TEXTURES ARE MASSIVE, DISSEMINATED PYRROHOTITE BRECIATED ROCK, VEINS, VEINLETS. DEPOSIT APPEARS TO REPRESENT HYDROTHERMAL REMOBILIZATION OF MAGMATIC SULFIDES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1993 Page, Norman J. U.S. Geological Survey

Beyond USGS

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

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