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Porgera

Plant in Papua New Guinea 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. Mineral rights holdings
  9. Ownership information
  10. Production statistics
  11. Reserves and resources
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10182946
MAS/MILS ID 6040200007
Record type Site
Current site name Porgera
Alternate or previous names No Other Known Name.

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: 143.08219, -5.46462 (WGS84)
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Papua New Guinea(country)

Geographic areas

Country
Papua New Guinea

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Nearby scientific data

Ore Body (1) 143.08219, -5.46462
ListMap

Economic information

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Plant
Commodity type Metallic
Significant Yes
Mining method Combined Methods
Year of first production 1990
Plant type Leach
Plant subcategory Hydromet
Milling method Leach-Precipitation

Mineral rights holdings

Type of mineral rights Unknown

Ownership information

  • Type Owner
    Owner Placer Pacific
    Interest 25
    Home office Papua New Guinea
    Year 1993
    First year 1993
  • Type Owner
    Owner Highlands Gold
    Interest 25
    First year 1993
  • Type Owner
    Owner Reniso
    Interest 25
    Year 1993
    First year 1993
  • Type Owner-Operator
    Owner Papua New Guinea
    Interest 25
    Home office Papua New Guinea
    Year 1993
    First year 1993

Production statistics

  • Year 1990
    Accuracy Estimate
    Description Ore At 5.81 G/Mt Of Gold (Estimated) 199258 Metric Tons Of Ore.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 199258mt 6g/mt
  • Year 1991
    Accuracy Estimate
    Description Ore At 5.81 G/Mt Of Gold (Estimated) 701938 Metric Tons Of Ore.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 701938mt 6g/mt
  • Year 1992
    Accuracy Estimate
    Description Ore At 5.81 G/Mt Of Gold (Estimated) 1067161 Metric Tons Of Ore.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1067161mt 6g/mt
  • Year 1993
    Description Oz Of Gold: 1156670 Oz
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 35976463.36g
  • Year 1993
    Accuracy Estimate
    Description Ore At 5.81 G/Mt Of Gold (Estimated) 2441000 Metric Tons Of Ore.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 2441000mt 6g/mt
  • Year 1994
    Description Oz Of Gold: (First Half Of 94) 541561 Oz
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 16844432.27g
  • Year 1994
    Description Ore At 5.81 G/Mt Of Gold (Projected) 4000000 Metric Tons Of Ore.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 4000000mt 6g/mt

Reserves and resources

  • Type In-situ
    Estimate year 1995
    Demonstrated 65400000mt ore
    Total resources 65400000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 4.5 g/mt Gold Major 1995
  • Type In-situ
    Estimate year 1995
    Measured 1200000mt ore
    Indicated 700000mt ore
    Demonstrated 1900000mt ore
    Total resources 1900000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 12.1 g/mt Gold Major 1995
  • Type In-situ
    Estimate year 1995
    Measured 31800000mt ore
    Indicated 31600000mt ore
    Demonstrated 63400000mt ore
    Total resources 63400000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 4.2 g/mt Gold Major 1995
  • Type In-situ
    Estimate year 1993
    Indicated 275705738mt ore
    Demonstrated 275705738mt ore
    Total resources 275705738mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 5.81 g/mt Gold Major 1993

Comments on the reserve resource information

  • IN-SITU,GEOLOGIC RESERVES(AS OF 1990): HIGH GRADE : 6,530,000 MT AT 26.85 G AU,22.63 G AG . LOW GRADE :44,171,000 MT AT 5.14 G AU, 9.95 G AG. ---------------------------------------------------------------- TOTAL :50,701,000 MT AT 7.95 G AU, 7.39 G AG. EXPECTED START IN 1993 WITH EVENTUAL ANNUAL OUTPUT LEVEL OF 800- 900,000 OZ AU/YR. SHOULD DO FOR THE 1992 AU AVAILABILITY STUDY WILL LIKELY USE PRESSURE OXIDATION PRETREATMENT AS HOMESTAKE IS USING AT MCGLAUGHLIN. ADIT WAS UPDATED MARCH, 96. ABOVE DATA OUT OF DATE.

Reference information

Bibliographic references

  • Production

    PORGERA MINE RESUMES FULL PRODUCTION IN PAPUA NEW GUINEA;

  • Production

    SKILLINGS MINING REVIEW, AUG 27, 1994, PAGE 9.

  • Reserve-Resource

    MINING MAGAZINE, 11/95, P300, "PROGREA UPDATES RESERVES."

General comments

Subject category Comment text
Deposit MINE CLOSED AUG. 2, 1994, FOLLOWING AN EXPLOSION IN THE SURFACE EXPLOSIVES FACILITY OF A CONTRACTOR. MINE WAS REOPENED AGU. 13, 1994. SEE BIBLI. "P" 001-002.

Reporter information

Type Date Name Affiliation Comment
Reporter 02-APR-1996 Slater, Linda C. 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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