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Marte

Producer in Chile with commodities Gold, Copper
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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. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Ownership information
  14. Production statistics
  15. Reserves and resources
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10058037
MRDS ID TC03763
Record type Site
Current site name Marte
Related records 10182170

Geographic coordinates

Geographic coordinates: -69.0195, -27.16941 (WGS84)
Elevation 4250
Location accuracy 1000(meters)
Relative position 130KM EAST OF COPIAPO

Site location context

Political divisions (FIPS codes)

Chile(country)

South America(continent)

Land(continent)

Geographic areas

Country
Chile

Comments on the location information

  • ON SW FLANK OF VOLCAN PASTILLITOS

Commodities

Commodity Importance
Gold Primary
Copper Secondary

Materials information

Materials Type of material
Bornite Ore
Chalcopyrite Ore
Cinnabar Ore
Enargite Ore
Galena Ore
Gold Ore
Molybdenite Ore
Pyrite Ore
Tennantite Ore
Alunite Gangue
Barite Gangue
Calcite Gangue
Chlorite Gangue
Diaspore Gangue
Kaolinite Gangue
Magnetite Gangue
Quartz Gangue
Rutile Gangue
Sericite Gangue
Tourmaline Gangue

Alteration

  • (Local) See Comments

Analytical data

Result FLUID INCLUSIONS SUGGEST SALINATIES OF 1.7 TO 19.2 WT% NACL EQUIVALENT AND TEMPERATURE OF 177-333 DEGREES C AT 500-700 M BENEATH THE PALEOSURFACE. AVERAGE CU CONTENT OF 18 SAMPLES IS 549 PPM
Result AG, 0.53 PPM
Result MO, 46 PPM
Result PB, 185 PPM
Result AS, 126 PPM
Result HG, 170 PPB.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Tertiary
    Chronological age 13
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Tertiary
    Chronological age 13
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Tertiary
    Chronological age 13
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic)
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Tertiary
    Chronological age 13

Nearby scientific data

(1) -69.0195, -27.16941
ListMap

Economic information

Ore body information

  • Dip }

Comments on the geologic information

  • PREMINERALIZATION ANDESITIC LAVAS HAVE HORNBLENDE K/AR AGE OF 13.6 +/- 0.4 MA. COMPOSITE STOCK OF CHLORITE INTRUDED BY HYDROTHERMAL BRECCIAS AND MICRODIORITE WITH MIAROLITIC CAVITIES. LOCAL FAULTS NNE STRIKE MAY BE RESPONSIBLE FOR DOWN DROPPING ORE BODY AND PRESERVING.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1981
Discoverer B.T. Exploraciones Ltd. For Companhis Minera Anglo Cominco Ltd Joint Venture
Year of first production 1989

Mining district

District name Cerro Bastillas

Ownership information

  • Type Operator
    Owner Companhia Minera Tres Cruces
  • Type Owner
    Owner Anglo-American (74.3%) And Cominco Resources (24.7%)

Production statistics

  • Year 1989
    Material ORE
    Accuracy Estimate
    Description Ap_Grade: ^0.044 G/T
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 0g/mt

Comments on the production information

  • EXPECTED TO PRODUCE 2.9 METRIC TONS OR 87000 0Z AU PER YEAR.

Reserves and resources

  • Type In-situ
    Estimate year 1989
    Total resources 31000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.368 g/mt Gold Major 1989
  • Type In-situ
    Estimate year 1987
    Total resources 46000000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 44.477 g/mt Gold Major 1987

Comments on the reserve resource information

  • ORE(2) GEOLOGICAL RESERVE USING 0.5 G/MT AU CUTOFF; ORE(3) RESERVE WITH 2.0 G/MT AU CUTOFF GRADE. AU AND AG CONTAINED METAL.

Comments on development

  • AERIAL RECONNAISSANCE RECOGNIZED ALTERATION. MINERA ANGLO AMERICAN CHILD LTD CONDUCTED GEOCHEMICAL PROGRAM USING TALUS FINES OVER 2 X 1 KM AREA IN 1981 LOCATING 6 ANOMALIES WITH GREATER THAN 200 PPB AU, THE HIGHEST AND LARGEST (GREATER THAN 400 PPB, 800 X 450 M) SURROUNDS CERRO PUNTIAGUDO AND IS SITE OF THE ORE BODY; CU IS GREATER THAN 100 PPM WITH ISOLATED AS AND PB ANOMALIES, NO ZN OR AG. BULLDOZER TRENCHING (GREATER THAN 5 KM) MAPPING, AND GEOCHEMICAL CHIP SAMPLES SHOWED AU AT GREATER THAN 0.5 PPM ASSOCIATED WITH ARRAYS OF STEEPLY DIPPING QUARTZ VIENS. BY LATE 1982 WAS EXPLORED TO ABOUT 400 M BY UNDERGROUND DEVELOPMENT AND COLUMN AND PILOT-SCALE HEAPLEACH SHOWED GOLD RECOVERABLE BY CYANIDATION. ORE RESERVES DEFINED BY DRILLING 1983-1987 (80 REVERSE CIRCULATION HOLES 80-250 M DEPTH, 9 DIAMOND DRILL HOLES). DECISION MADE IN 1988 TO DEVELOP 8000 METRIC TON PER DAY OPEN-PIT HEAP LEACH OPERATION. ; TOTAL$: 35.4

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit GOLD DEPOSIT (< G/METRIC TON AU) IS ELONGATE, STEEPLY INCLINED BODY WHICH IN PLAN IS SAUSAGE WITH GENTLE CONCAVITY FACING NORTH.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1990 Williams, William C. University of Arizona
Updater 01-NOV-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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