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Rodados Negros

Prospect 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. Ownership information
  13. Reserves and resources
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10078158
MRDS ID W026332
Record type Site
Current site name Rodados Negros

Geographic coordinates

Geographic coordinates: -67.3678, -23.79918 (WGS84)
Elevation 5025
Relative position 450 KM FROM CITY AND PORT OF ANTOFAGASTA, 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 PUNA PLATEAU. ON NW FLANK OF ANDESITIC-RHYODACITIC VOLCANO.

Commodities

Commodity Importance
Iron Primary

Materials information

Materials Type of material
Hematite Ore
Magnetite Ore
Apatite Gangue
Chalcedony Gangue
Garnet Gangue
Limonite Gangue
Pyroxene Gangue
Quartz Gangue
Scapolite Gangue

Analytical data

Result 65 % FE
Result 0.3 - 0.4 % P
Result 0.1 % S
Result 1 - 2 % SIO2
Result TRACE ELEMENT DATA FOR 3 SAMPLES NYSTROM AND HENRIQUEZ (1994).

Host and associated rocks

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

Nearby scientific data

(1) -67.3678, -23.79918
ListMap

Economic information

Ore body information

  • General form VEINS, BLANKETS, SOME LAMINAR, DIKE-SHAPED
    Strike N 20 W
    Dip 90
    Thickness 60M
    Length 600M
    Width 140M

Comments on the geologic information

  • GENESIS OF MINERALIZATION RELATED TO PLIO VOLCANIC ACTIVITY. GENERAL SUCCESSION 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 Prospect
Commodity type Metallic
Significant No
Discovery year 1958

Mining district

District name El Laco

Ownership information

  • Type Owner-Operator
    Owner Cia. Min. Santa Barbara.

Reserves and resources

  • Type In-situ
    Estimate year 1970
    Total resources 20000000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 60 wt-pct Iron Major 1970

Comments on the reserve resource information

  • LISTED AS LESS THAN 2 MILL. M.T.
  • LISTED AS LESS THAN 2 MILLION METRIC TONS OF EQUIVALENT 60 % FE ORE.

Reference information

Bibliographic references

  • Deposit

    RUIZ FULLER, CARLOS, 1965 , GEOL. AND METAL DEPOSITS OF CHILE, CHILE INST. GEOL. INV., 307 P, (SPANISH) ( 430 ) R858G

  • Deposit

    PARK, C. F., JR., 1972 , IRON ORE DEPOSITS OF THE PACIFIC BASIN, ECON. GEOL., V. 56 , N. 3 , P 339

  • Deposit

    FRUTOS, J. AND PINCHEIRA, M., 1986, FICHAS METALOGENICAS DE YACIMIENTOS MINERALES METALICOS CHILENOS, IN FRUTOS, J., OYARZUN, J., AND PINCHEIRA, M., EDS., GEOLOGIA Y RECURSOS MINERALES CHILENOS: UNIVERSIDAD DE CONCEPCION, CONCEPCION, P. 841-888.

  • Deposit

    RUIZ, C. AND PEEBLES, F., 1988, YACIMIENTOS METALIFEROS DE CHILE: SANTIAGO, 334 P.

  • Deposit

    HENRIQUEZ, F., AND MARTIN, R., 1978, CRYSTAL GROWTH IN MAGNETITE FLOW AND FEEDER DIKES, EL LACO, CHILE: CAN. MIN., V. 16, P. 581-589.

  • Deposit

    WEGNER, R., 1979, DIE MAGNETIT LAVASTROME VON EL LACO IN CHILE, UNDIHERE BEGLEISTENDEN GESTEINE: MEMORIA MINERLOGISTA, UNIV. ALBERT LUDWIG, FREIBERG, BREMEN, 89 P.

  • Deposit

    BORIC, R., DIAZ, F., AND MAKSAEV, V., 1984, COMPLEMENTO MAPA METALOGENICO, II REGION: GERENCIA DE DESARROLLO, SANTIAGO (12 VOLS.)

  • Deposit

    NYSTROM, J.O., AND HENRIQUEZ, F., 1994, MAGMATIC FEATURES OF IRON ORES OF THE KIRUNA TYPE IN CHILE AND SWEDEN: ORE TEXTURES AND MAGNETITE GEOCHEMISTRY: ECONOMIC GEOLOGY, V. 89, P. 820-839.

  • Other Database

    CIMRI

  • Reserve-Resource

    RUIZ FULLER, 1965

General comments

Subject category Comment text
Deposit THIS DEPOSIT IS ONE OF A GROUP OF 6 MAJOR DEPOSITS DISTRIBUTED ALONG THE PERIPHERY OF A NORTHWEST TRENDING ELLIPTICAL AREA ABOUT 7 KM 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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