Toqui

Producer in Chile with commodities Zinc, Lead, Silver, Copper, Gold
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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Ownership information
  16. Reserves and resources
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10073041
MRDS ID W018847
Record type Site
Current site name Toqui

Geographic coordinates

Geographic coordinates: -70.99953, -29.99745 (WGS84)
Elevation 850
Relative position 10 KM SOUTH OF THE 2,050 M CERRO CATEDRAL MOUNTAIN

Site location context

Political divisions (FIPS codes)

Chile(country)

South America(continent)

Land(continent)

Geographic areas

Country
Chile

Comments on the location information

  • ACCESS VIA ALL-WEATHER GRAVEL ROAD FROM PROVINCIAL CAPITAL, COYHAIQUE (120 KM SOUTH) AND PRINCIPAL PORT, CHACABUCO (120 KM SOUTHWEST)

Commodities

Commodity Importance
Zinc Critical Primary
Lead Primary
Silver Primary
Copper Tertiary
Gold Tertiary

Comments on the commodity information

  • CONCORDIA ORE BODY (ZN-PB-CU), ESTATUAS (ZN), SAN ANTONIO (ZN-PB-CU)

Materials information

Materials Type of material
Bismuth Ore
Chalcopyrite Ore
Galena Ore
Molybdenite Ore
Sphalerite Ore
Tetrahedrite Ore
Calcite Gangue
Hedenbergite Gangue
Magnetite Gangue
Pyrite Gangue
Pyrrhotite Gangue
Quartz Gangue

Alteration

  • (Local) Argillic Alteration In Andesitic Breccia Below Concordia Ore Ii Body; Skarns

Mineral occurrence model information

Model code 187
USGS model code 28a.1
Deposit model name Massive sulfide, Sierran kuroko
Mark3 model number 44

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Upper Coyhaique Formation
    Rock description Upper Coyhaique Formation
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale > Black Shale
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -70.99953, -29.99745

Economic information

Geologic structures

Type of structure Regional
Structure description Precordillera Geotectonic Province, Magellan Geosyncline
Type of structure Local
Structure description Deposits Confined To Lenticular Local Basins Deposits Of Limestone And Black Shales At Three Different Levels In At Least Two Verticle Stacks And Occur Interfingering With Or Adjacent To Lenticular Limestone Beds.

Ore body information

  • General form TABULAR, IRREGULAR
    Strike DISCORDANT VEINS STRIKE NORTH-SOUTH
    Dip SHALLOW DIPPING TO HORIZONAL STRATIFORM BODIES; VEIN STEEPLY DIPPING
    Thickness 10M
    Length 300M
    Width 220M
    Depth to top 100M
    Depth to bottom 350M
  • General form TABULAR, IRREGULAR
    Strike DISCORDANT VEINS STRIKE NORTH-SOUTH
    Dip SHALLOW DIPPING TO HORIZONAL STRATIFORM BODIES; VEIN STEEPLY DIPPING

Controls for ore emplacement

  • Deposition On Distal Edges Of Volcanic Rocks In Basins Adjacent Or Above Volcanic Centers

Comments on the geologic information

  • DISCORDANT VEINS ARE INTERPRETED AS FEEDER, STRATIFORM PYRRHOTITE AND PYRITE IN SHALES ABOVE THE CONCORDIA ORE ZONE. SIGNIFICANT REPLACEMENT IN DOLOMITE MAY SUGGEST DEPOSIT-TYPE SHOULD BE POLYMETALLIC REPLACEMENT.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Ownership information

  • Type Owner
    Owner Sociedad Contractual Minera And Metallegesellschaft
    First year 1983

Reserves and resources

  • Type In-situ
    Estimate year 1983
    Total resources 1330000mt ore
    Commodity Subtype Grade units Group Importance Year
    Zinc Zn 8.8 wt-pct Zinc Major 1983
    Lead Pb 0.86 wt-pct Lead Major 1983
    Silver Ag 53 g/mt Silver Major 1983
    Copper Cu 0.1 wt-pct Copper Trace 1983

Comments on the reserve resource information

  • COMPOSITE OF TWO STRATIFORM BODIES AT SAN ANTONIO (ORE I) OF 1.2 MIL TONNES AVERAGING 9 PERCENT ZN, 0.7 % PB, 0.1 % CU, AND 52 G/TONNE AG AND (ORE II) OF 0.13 MIL TONNES AVERAGING 6.75% ZN, 2.36 % PB, 0.10 % CU AND 62 G/TONNE AG; ESTATUAS STRATIFORM LENSES ARE RELATIVILY SMALLER WITH 15 TO 30 % ZN; THE CONCORDIA LENSES ARE ALSO RELATIVELY SMALLER WITH INDICATED GRADES FROM DRILLING OF 13 % ZN, 6.3 % CU, AND 145 G/TONNE AG; NEW EXTENSIONS WEST OF MINING AREA (1989) INDICATE ADDITIONAL ORE WITH SOME ZONATION OF ZN, CU, AND SIGNIFICANT AU VALUES.

Comments on development

  • THREE YEAR PROGRAM PRIOR TO 1983 INCLUDED GEOLOGIC MAPPING, GEOCHEMISTRY, GEOPHYSICS, 6,780 M DIAMOND DRILLING AND 486 M UNDERGROUND EXPLORATION.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit DEPTH OF DEPOSIT FOR SECTION WITH BODIES IN WESTERN PART OF THE TOQUI DISTRICT; OTHER DEMINSION FOR MAXIMUM SIZE OF INDIVIDUAL BODIES; SAN ANTONIO ORE I BODY IS BETWEEN 2-10 M THICK, ROUGHLY ELLIPSOIDAL WITH DIMENSIONS OF 220-300 M; SAN ANTONIO ORE II BODY IS 1-3 M THICK AND ABOUT 60 BY 130 M IN PLAN; DISCORDANT PB-ZN VEINS 250 M APART AND PARALLEL; ESTATUAS ORE BODY AND PARTS OF CONCORDIA HAVE BANDED TEXTURES; SPHALERITE-RICH ORE AT CONCORDIA AND SAN ANTONIO.
Deposit 4 MIL. T RESV. LOCATION UNCERTAIN

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1976 Schruben, Paul G. U.S. Geological Survey
Updater 01-MAY-1990 Bliss, James D. U.S. Geological Survey

Beyond USGS

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