1. Mineral Resources
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  3. Mineral Resource Data System (MRDS)

San Cristobal

Plant in Antofagasta, Chile with commodities Gold, Silver
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Nearby scientific data
  7. Economic information about the deposit and operations
  8. Mining district
  9. Mineral rights holdings
  10. Ownership information
  11. Production statistics
  12. Reserves and resources
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10182306
MRDS ID TC03728
MAS/MILS ID 3370050015
Record type Site
Current site name San Cristobal
Related records 10106985

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -69.58283, -23.53082 (WGS84)
Elevation 1800
Location accuracy 10000(meters)

Site location context

Political divisions (FIPS codes)

Antofagasta(province)

Chile(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Chile Antofagasta

Commodities

Commodity Importance
Gold Primary
Silver Primary

Nearby scientific data

Ore Body (1) -69.58283, -23.53082
ListMap

Economic information

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Deposit size Small
Significant Yes
Discovery year 1931
Mining method Open Pit
Year of first production 1990
Plant type Leach
Plant subcategory Hydromet
Milling method Leach-Solvent-Extract-Electrowin

Mining district

District name El Tessoro Area

Mineral rights holdings

Type of mineral rights Patented

Ownership information

  • Type Owner-Operator
    Owner Niugini Mining Ltd.
    Interest 100
    Home office Papua New Guinea
    Year 1992
    First year 1989

Comments on the ownership information

  • COMPANY NOW 100% OWNED BY NIUGINI MINING LTD. (57% BATTLE MTN.).

Production statistics

  • Year 1989
    Description Heap Leach Pilot Trial 54000 T Ore
  • Year 1990
    Description Proposed Ore And Waste Mined 5000000 Mt Material
  • Year 1990
    Description Proposed Gold Production 40000 Oz. Gold
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 1244139.24g
  • Year 1990
    Description Proposed Mining Rate 1300000 Mt Ore
  • Year 1990
    Description Waste Mined 1300000 Mt Waste
  • Year 1990
    Description Ore Minrd 200000 Mt Ore
  • Year 1990
    Description Silver Produced 55000 Oz. Silver
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 1710691.45g
  • Year 1990
    Description Gold Produced 11000 Oz. Gold
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 342138.29g
  • Year 1991
    Description Waste Removed 4556838 Mt Waste
  • Year 1991
    Description Ore Crushed 1463939 Mt Ore
  • Year 1991
    Description Ore Mined 1564171 Mt Ore
  • Year 1991
    Description Silver Produced 71010 Oz. Silver
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 2208658.18g
  • Year 1991
    Description Gold Produced 25028 Oz. Gold
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 778457.92g
  • Year 1992
    Description Waste Removed 6740375 My Waste
  • Year 1992
    Description Ore Treated 2786880 Nt Ore
  • Year 1992
    Description Ore Crushed 2798183 Mt Ore
  • Year 1992
    Description Ore Mined 3103770 Mt Ore
  • Year 1992
    Description Silver Produced 176499 Oz. Silver
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 5489733.29g
  • Year 1992
    Description Gold Produced 57948 Oz. Gold
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 1802384.51g

Comments on the production information

  • ASSUME 365 DAY PER YEAR OPERATION.

Reserves and resources

  • Type In-situ
    Estimate year 1991
    Inferred 27700000mt ore
    Total resources 27700000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.14 g/mt Gold Major 1991
  • Type In-situ
    Estimate year 1991
    Demonstrated 15200000mt ore
    Total resources 15200000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.19 g/mt Gold Major 1991
  • Type In-situ
    Estimate year 1994
    Demonstrated 34830000mt ore
    Total resources 34830000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 4.8 g/mt Silver Major 1994
    Gold Au 0.88 g/mt Gold Major 1994
  • Type In-situ
    Estimate year 1994
    Demonstrated 20400000mt ore
    Total resources 20400000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 5.3 g/mt Silver Major 1994
    Gold Au 0.97 g/mt Gold Major 1994

Comments on the reserve resource information

  • RESOURCE DATA FROM 1991? ETD SILVER GRADE DATA BASED ON SILVER DATA FROM ETD, USING AG TO AU RATIO OF 3.52 TO 1.00. SILVER GRADE CALUATED AS WEIGHTED AVERAGE OF ETD DATA.

Workings at the site

  • Type of workings Surface
    Area 12HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Percent Waste Rock 74.5
    Avg. Bench Height (meters) 5

Reference information

Bibliographic references

  • Deposit

    *GOLD GAZETTE, NOV. 16, 1992, P. 4; JAN. 27, 1992, PP. 11-13

  • Deposit

    *MINING MAGAZINE, JULY 1990, PP. 5-6.

  • Deposit

    *SKILLING MINING REVIEW, MAR. 9, 1991, P. 8, FEB. 3, 1990,

  • Deposit

    P. 12.

  • Deposit

    *LAML, APR. 16, 1988; DEC. 2, 1998.

  • Deposit

    *MINING MAGAZINE, APR. 1990, P. 224; JULY 1987, P. 15.

  • Deposit

    *INTERNATIONAL MINING, MAY 1988, P. 54.

  • Deposit

    *NEWS RELEASE, GLAMIS GOLD LTD., OCT. 20, 1988.

  • Deposit

    *MINING JOURNAL LONDON, JAN. 26, 1990; FEB. 19, 1990; MAY 8,

  • Deposit

    1987.

  • Deposit

    *MINERIA CHILENA, NOV., NO. 125.

  • Deposit

    *NIUGINA MINING LTD., REPORT TO SHAREHOLDERS, FOR THE

  • Deposit

    QUARTER ENDED 31 DEC. 1992.; FOR THE QUARTER ENDED 12/31/91.

  • Deposit

    *NIUGINI MINING, P. 28, P. 5.

  • Deposit

    *NIUGINI MINING LTD, SAN CRISTOBAL GOLD MINE PAMPHLET.

  • Deposit

    *NIUGINI MINING LTD., ANNUAL REPORT, 1990.

  • Deposit

    MINING JOURNAL, LONDON, "SAN CRISTOBAL IMPROVES...", 28 JAN

  • Deposit

    1994, V. 322, N. 8260, P. 65.

  • Reserve-Resource

    INFORMATION PAMPHLET ON SAN CRISTOBAL GOLD MINE BY

  • Reserve-Resource

    INVERSIONES MINERAS DEL INCA S.A., NIUGINI MINING LIMITED

  • Reserve-Resource

    8 PAGES.

General comments

Subject category Comment text
Deposit LAT/LONG BASED ON 1991 AR MAP PAGE 4 AND THE TIMES ATLAS. TERTIARY CRUSHING CIRCUIT INSTALLED EARLY 1994. PRODUCTION EXPECTED TO INCREASE. COST: $US2.7 MILLION. WILL INSURE THAT AT LEAST 10000 TON OF ORE/DAY AVAILABLE FOR LEACH PADS.

Reporter information

Type Date Name Affiliation Comment
Reporter 28-JUL-94 Peterson, Gary R. U.S. Bureau of Mines

Beyond USGS

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

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