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

Laco Sur

Occurrence in Chile with commodity Iron
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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. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Reserves and resources
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10078139
MRDS ID W026306
Record type Site
Current site name Laco Sur

Geographic coordinates

Geographic coordinates: -67.49114, -23.84084 (WGS84)
Elevation 4650
Relative position ABOUT 450 KM FROM ANTOFAGASTA, CLOSE TO ARGENTINA BORDER AND 150 KM FROM SALTA, ARGENTINA.

Site location context

Political divisions (FIPS codes)

Chile(country)

South America(continent)

Land(continent)

Geographic areas

Country
Chile

Comments on the location information

  • ON S FLANK OF ANDESITIC-RHYODACTIC VOLCANO.

Commodities

Commodity Importance
Iron Primary

Materials information

Materials Type of material
Hematite Ore
Magnetite Ore
Actinolite Gangue
Alunite Gangue
Apatite Gangue
Limonite Gangue
Quartz Gangue
Scapolite Gangue

Analytical data

Result TRACE ELEMENTS GIVEN BY NYSTROM AND HENRIQUEZ (1994).

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
    Stratigraphic age (youngest) Pleistocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -67.49114, -23.84084
ListMap

Economic information

Ore body information

  • General form FLOWS, HALF MOON
    Thickness 60M
    Length 700M
    Width 300M

Comments on the geologic information

  • GENERAL SUCESSION FROM BOTTOM TO TOP IS ANDESITIC LAVA (UP TO 30 M THICK), PYROCLASTIC ORE (UP TO 30 M THICK), MAGNETITE LAVA (UP TO 50 M THICK), PYROCLASTIC UNIT WITH FRAGMENTS OF MASSIVE ORE (ABOUT 20 M THICK), AND ANDESITIC FLOW. ORE BODIES ARE SURROUNDED BY NARROW METASOMATIC AUREOLES (UP TO 1 M THICK IN LAVA BUT WIDER IN TUFFS) WHERE HOST ROCK IS TRANSFORMED TO PYROXENE, SCAPOLITE, QUARTZ AND GARNET.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1958

Mining district

District name El Laco

Reserves and resources

  • Type In-situ
    Estimate year 1965
    Total resources 20000000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 60 wt-pct Iron Major 1965

Comments on the reserve resource information

  • * POTENTIAL RESOURCES LISTED AS BEING GREATER THAN 20 MILLION METRIC TONS.
  • POTENTIAL RESOURCES LISTED AS BEING GREATER THAN 20 MILLION METRIC TONS.

Reference information

Comments on the other database information

  • RECORD NUMBER W026273 IS A POTENTIAL DUPLICATE OF THIS RECORD

Bibliographic references

General comments

Subject category Comment text
Deposit <20,000,000 MT OF MINERAL (<60% FE)
Deposit THIS DEPOSIT IS ONE OF A GROUP OF 6 MAJOR DEPOSITS LOCATED ON THE PERIPHERY OF A NORTHWEST - TRENDING ELLIPTICAL AREA ABOUT 7 KILOMETERS LONG AND 3 KM. WIDE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1973 Klemic, Harry; Shaffer, Glenn L. U.S. Geological Survey
Updater 01-SEP-1989 Williams, William C. University of Arizona
Updater 01-SEP-1994 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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