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  3. Mineral Resource Data System (MRDS)

Mt. Leyshon Mine

Producer in Queensland, Australia 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. Materials information
  7. Alteration
  8. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Ownership information
  12. Production statistics
  13. Reserves and resources
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10085202
MRDS ID W700759
Record type Site
Current site name Mt. Leyshon Mine

Geographic coordinates

Geographic coordinates: 146.24877, -20.28015 (WGS84)

Site location context

Political divisions (FIPS codes)

Queensland(province)

Australia(country)

Australia(continent)

Land(continent)

Geographic areas

Country State
Australia Queensland

Comments on the location information

  • LOCATED IN NORTHERN QUEENSLAND.

Commodities

Commodity Importance
Gold Primary
Silver Primary

Materials information

Materials Type of material
Galena Ore
Gold Ore
Molybdenite Ore
Pyrite Ore
Pyrrhotite Ore
Sphalerite Ore
Anatase Gangue
Apatite Gangue
Calcite Gangue
Chlorite Gangue
Monazite Gangue
Muscovite Gangue
Quartz Gangue
Rutile Gangue
Siderite Gangue

Alteration

  • (Local) Hydrothermal, Phyllic, Potassic, Propylitic

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic)
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
    Rock unit name Mt. Leyshon Diatreme;
    Rock description Mt. Leyshon Diatreme;
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) 146.24877, -20.28015
ListMap

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1871

Ownership information

  • Type Owner
    Owner Pan Australian Mining Ltd.

Production statistics

  • Year 1988
    Period 1986-1988
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^1.35g Au/Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt

Comments on the production information

  • IN 1988, THE MINE WAS PRODUCING 65,000-70,000 OZ AU/YR, COMPARED WITH A PRE-COMMISSIONING TARGET OF 46,000 OZ AU/YR. THE MINING RATE IS CURRENTLY 2 MILLION MT/YR OF ORE AND THE WASTE TO ORE RATIO IS 1:1. ADDITONAL PRODUCTION INFORMATION CAN BE FOUND IN PAULL AND OTHERS, 1990.

Reserves and resources

  • Type In-situ
    Estimate year 1986
    Total resources 6300000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.8 g/mt Gold Major 1986
    Silver Ag 4.8 g/mt Silver Major 1986
  • Type In-situ
    Estimate year 1988
    Total resources 6000000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.2 g/mt Gold Major 1988
  • Type In-situ
    Estimate year 1988
    Total resources 10400000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.2 g/mt Gold Major 1988

Comments on the workings information

  • AS OF 1988, OVER 60 M HAVE BEEN SLICED OFF THE TOP OF MT. LEYSHON AND AN ACTUAL OPEN PIT WAS NOT EXPECTED FOR ANOTHER YEAR.

Comments on development

  • ORE PRODUCTION CAPACITY BETWEEN 500,000 AND 1,000,000 TONNES/YEAR.

Reference information

Bibliographic references

  • Deposit

    MINING MAGAZINE, JANUARY 1989, P. 47.

  • Deposit

    ENGINEERING AND MINING JOURNAL, FEBRUARY, 1988, P. 14.

  • Deposit

    PAULL, P.L., HODKINSON, I.P., MORRISON, G.W., AND TEALE, G.S., 1990, MOUNT LEYSHON GOLD DEPOSIT, IN HUGHES, F.E., ED., GEOLOGY OF THE MINERAL DEPOSITS OF AUSTRALIA AND PAPUA NEW GUINEA, VOLUME 2: AUSTRALASIAN INSTITUTE OF MINING AND METALLURGY MONOGRAPH 14, P. 1471-1481.

  • Production

    PAULL AND OTHERS, 1990.

  • Reserve-Resource

    PAULI AND OTHERS, 1990.

General comments

Subject category Comment text
Deposit CURRENT MINING OPERATIONS HAVE REMOVED THE TOP 80 M OF MT. LEYSHON (1989). ; INFO.SRC : 1 PUB LIT
Deposit PRINCIPAL HOST IS A PHREATIC BRECCIA PIPE ABOUT 300 M IN DIAMETER.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-89 Beougher, Dee (Spanski, Gregory T.) U.S. Geological Survey
Updater 01-APR-94 Orris, Greta 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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