Guayacan

Past Producer in Chile with commodity Copper
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. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Mining district
  13. Ownership information
  14. Production statistics
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10058134
MRDS ID TC03933
Record type Site
Current site name Guayacan
Related records 10279499

Geographic coordinates

Geographic coordinates: -71.07453, -32.51247 (WGS84)
Elevation 825
Relative position 11 KM SW OF CABILDO.

Site location context

Political divisions (FIPS codes)

Chile(country)

South America(continent)

Land(continent)

Geographic areas

Country
Chile

Comments on the location information

  • ON RIDGE BETWEEN HEAD OF QUEBRADA DEL COBRE AND QUEBRADA CACHAPOAL ON FUNDO INGENIO.

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Bornite Ore
Chalcocite Ore
Chalcopyrite Ore
Safflorite Ore
Calcite Gangue
Chlorite Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Los Maquis Limestone Member
    Rock description Los Maquis Limestone Member
    Stratigraphic age (youngest) Early Cretaceous
    Stratigraphic age (youngest) Early Cretaceous
    Stratigraphic age (youngest) Early Cretaceous
    Stratigraphic age (youngest) Early Cretaceous
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Lo Prado Formation
    Rock description Lo Prado Formation

Nearby scientific data

(1) -71.07453, -32.51247

Economic information

Ore body information

  • General form TABULAR
    Strike N5W
    Dip 15-28E
    Thickness 5M
    Length 230M
    Width 200M

Controls for ore emplacement

  • Vesicular Flow Crests And Paleochannels.

Economic information about the deposit and operations

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

Mining district

District name Cabildo Sur

Ownership information

  • Type Operator
    Owner Gunter Rochefort
    First year 1957
  • Type Owner
    Owner Sr. Juan Wenke

Production statistics

  • Year 1964
    Period 1957-1964
    Material ORE
    Accuracy Estimate
    Description Cp_Grade: ^3.5% Cu
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 4wt-pct

Comments on the production information

  • A 2% CU GRADE WAS USED AS A CUTOFF IN 1964 TO MARK THE BASE OF ORE.

Comments on the workings information

  • TWO OPEN PITS, ONE 50X20 M LONG AXIS N45W; MANY SURFACE PITS AND UNDERGROUND ROOM AND PILLAR WORKINGS. MAIN ADIT AT 1090 M ELEVATION IS S50W.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit MINERALIZATION CONCENTRATED IN VESICLES AT TOPS OF FLOWS AND FINE FRACTURES. ORE BODIES PARALLEL TO CONTACT OF ANDESITE WITH OVERLYING LIMESTONE. ORE AVERAGES 2 M THICK. THE CONTACT OF ANDESITE WITH OVERLYING LIMESTONE IS UNDULATORY SURFACE WITH CRESTS AND DEPRESSIONS. DEPRESSIONS ARE FILLED WITH CALCAREOUS SANDSTONE THAT FILLS CHANNELS (ANCIENT STREAM) BETWEEN LAVA FLOWS. ORE IS THICKEST IN CRESTS OF FLOWS. ARE ABOUT 4 CHANNELS ORE N80E, 21E PLUNGE, N70E, N60W. CHANNEL FILL INCLUDES ROUNDED PEBBLES OF MINERALIZED ROCK. ORE BODIES ZONED: BASAL ZONE OF BORNITE, MIXED ZONE OF BORNITE AND CHALCOPYRITE, UPPER ZONE OF CHALCOPYRITE AND PYRITE. FIRST TWO IN ANDESITE, THE UPPER ONE IN LIMESTONE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1990 Williams, William C. University of Arizona
Updater 01-JAN-1994 Page, Norman J. U.S. Geological Survey

Beyond USGS

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