Australia

McArthur River Mine

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Categories

Overview

Mine TypeOpen Pit
StatusActive
Commodities
  • Zinc
  • Lead
  • Silver
Mining Method
  • Truck & Shovel / Loader
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Mine Life... Lock
SnapshotMcArthur River Mine is the world’s second largest zinc and lead deposit.

Heavy rainfall resulting from Cyclone Megan led to a temporary pause in operations at the McArthur River mine on 18 March 2024. However, the impact of this was modest, with the mine beginning the process of safely returning to normal operations on 26 March 2024.

Owners

SourceSource
CompanyInterestOwnership
Glencore plc. 100 % Indirect
McArthur River Mining Pty Ltd. (operator) 100 % Direct
McArthur River Mining Pty Ltd (MRM) is the operator of the Mine, and is a wholly owned subsidiary of Glencore.

Contractors

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Deposit type

  • Sediment-hosted

Summary:

McArthur River Mine (formerly known as HYC) Zinc-lead-silver mineralisation occurs predominantly as ultrafine bedded parallel sphalerite and galena rich bands hosted by dolomitic and carbonaceous pyritic siltstones, graded beds and chaotic debris flow breccias. The HYC mineralisation covers an area of about two km2 and has an average thickness of about 55 m. It is 1.5 km west of the Emu Fault and separated from the fault by the Cooley Dolomite Member of the Barney Creek Formation and the Western Fault Block. The western margin of the deposit has been folded and eroded and the eastern margin is faulted against the Cooley Dolomite Member. The northern margin interfingers with sedimentary slump breccia derived from older McArthur River Group sediments to the north of the deposit. The southern margin, which has been down faulted by 100 to 200 m by the northeast trending Woyzbun Fault, is transitional into barren pyritic shale. The deposit is divided into seven mineralised intervals referred to as orebodies. Orebodies comprise shale with lesser amounts of sedimentary breccia and tuff. Number 1 orebody is used to refer to an interval of weak silver-lead-zinc mineralisation hosted by nodular dolomitic shale in the footwall sequence. In addition, there is a broad interval of weak silver-lead-zinc mineralisation hosted by nodular dolomitic shale in the immediate hanging wall, along the eastern margin of the deposit. The hanging wall sequence comprises interbedded dolomitic shale, sedimentary turbidite breccia and occasional tuff beds. The Cooley Dolomite occurs along the eastern margin of the deposit. It comprises a fault bounded block of Teena and Mara Dolomite Members (older than the host to the mineralisation), which have incurred several episodes of brecciation. The Cooley Dolomite commonly hosts coarse-grained sphalerite and galena as veins, disseminations and breccia matrix.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

CommodityUnits202320222021202020192018201720162015
Zinc kt  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe271254210200273
Lead kt  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe5550454253
Silver koz  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe1,6751,7191,6201,4091,724
All production numbers are expressed as metal in concentrate.

Operational metrics

Metrics202320222021202020192018
Ore tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe4.3 Mt4.2 Mt

Production Costs

Commodity production costs have not been reported.

Heavy Mobile Equipment

Fleet data has not been reported.

Personnel

Mine Management

Job TitleNamePhoneEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 15, 2024
....................... Subscription required ....................... Subscription required ........... Subscription required ........... Subscription required Subscription required May 15, 2024
....................... Subscription required ....................... Subscription required Subscription required May 15, 2024
....................... Subscription required ....................... Subscription required ........... Subscription required ........... Subscription required Subscription required May 15, 2024
....................... Subscription required ....................... Subscription required Subscription required May 15, 2024

EmployeesTotal WorkforceYear
...... Subscription required 2023
...... Subscription required 2022
...... Subscription required 2021
...... Subscription required 2020
...... Subscription required 2019
...... Subscription required 2018
...... Subscription required 2017
...... Subscription required 2016

Aerial view:

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