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Australia
North Queensland Copper Operation

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 Location:
56 km E from Mount Isa, Queensland, Australia

  Address:
Level 6, 120 Edward Street
Brisbane
Queensland, Australia
4000
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Copper
  • Gold
  • Silver
Mining Method
  • Longhole open stoping
  • Avoca
  • Backfill
Production Start...
Mine Life2 years (as of Jan 1, 2022)
North Queensland Copper Operations comprises the Mt Colin copper mine, the Barbara development project.

Aeris will undertake further mining studies to investigate the potential of a new underground operation at Barbara.

Mt Colin run of mine ore is crushed on site before being transported by road train to the Mount Isa processing facility north of Cloncurry for toll treatment. The copper-gold concentrate produced is smelted in Mount Isa before been railed to the Port of Townsville for export.


Owners

Source: p. 1
CompanyInterestOwnership
Aeris Resources Ltd. 100 % Indirect
On July 1, 2022, Aeris Resources Limited announced that the acquisition of Round Oak Minerals Pty Ltd, announced on 28 April 2022, has been completed.

Round Oak Minerals is an Australian focused resources company with its primary asset being Mt Colin Cu mine in North-West Queensland.

Contractors

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Deposit Type

  • ISCG


Summary:

North Queensland Operations includes three deposits, Mt Colin, Barbara and Lillymay. The deposit is considered an ISCG (iron sulphide copper gold) classification. Mt Colin The deposit strikes approximately 295o (MGA), and dips approximately 75o NNE. It is hosted by metasomatised calc-silicates of the Corella Formation (1750-1738Ma), at surface, and by the Wonga-suite Burstall Granite (1745-1726Ma) at depth. Mineralisation principally controlled and essentially contained within the WNW-ESE striking planar Mt Colin fault. The broad-scale geology appears relatively simple and straightforward. The mineralised zone is dominated by pyrrhotite gangue to the east, and carbonate dominated gangue to the west. Known extent of +1.5% Cu mineralisation is approximately 400m in strike length, 500m down-dip, and up to ~10m in true width. The Mineral Resource extends to these limits. Barbara The deposit can be broken into main areas North, Central and South. Southern Lode of Barbara mineralization (+0.5% Cu) extends for approximately 230m in strike length (local N-S), averaging approximately 15m in true width (between 1m to >25m). As modelled it extends at least 580m down-plunge (550m below surface). The Mid and Northern Lodes average 3-5m in width over a combined strike length of 400m and to 180m below surface. Lillymay The Inferred Resource outcrops at surface and has been defined over a strike length of 400m, and down-dip for 140m. The larger E Lode is approximately 250m in strike ........


Mining Methods

  • Longhole open stoping
  • Avoca
  • Backfill


Summary:

A mining method review and redesign of the LOM was completed in June 2022. This included development design, stope access and mining method application.

Mine type: Underground long hole open stoping

The mining method used for the LOM was a combination of cyclical retreat benching and continuous Avoca benching.

Sub level intervals are 20m above 1300 Level and 25m below 1300 Level at Mount Colin. This is based on appropriate method for control of dilution, reduction of pillars and ore loss, ground control, safety and regional stability.

A minimum stoping width of 3m has been used.

Practical designs have been included for ventilation, power, pumping and drainage as well as second means of egress.

The majority of the stopes will be filled using rock fill to improve stope stability and increase ore recovery.


Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:
12 months to 30 June 2022 (previous Owner had a reporting period to 31 July).

CommodityProductUnits202320222021
Copper Metal in concentrate t  ......  Subscription required ^  ......  Subscription required  ......  Subscription required
Gold Metal in concentrate oz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required
Copper Concentrate kt  ......  Subscription required
Silver Metal in concentrate oz  ......  Subscription required
^ Guidance / Forecast.

Operational Metrics:

Metrics2021
Tonnes processed  ......  Subscription required
Subscription required - Subscription is required.

Reserves at June 30, 2022:
North Queensland Operation Mineral Resource figures are reported at a AUD$100 NSR value on a block by block basis.

The estimation of the Ore reserve is based on the cut-off grades applied:
-Fully costed stoping $139/t;
-Development $107/t.

CategoryTonnage CommodityGradeContained Metal
Proven 195 kt Copper 2.7 % 5 kt
Proven 195 kt Gold 0.5 g/t 3 koz
Probable 335 kt Copper 2.4 % 8 kt
Probable 335 kt Gold 0.4 g/t 4 koz
Proven & Probable 529 kt Copper 2.5 % 13 kt
Proven & Probable 529 kt Gold 0.4 g/t 7 koz
Total Resource 3,386 kt Copper 2.5 % 83 kt
Total Resource 3,386 kt Gold 0.3 g/t 33 koz
Total Resource 3,386 kt Silver 1.8 g/t 201 koz

Financials:

Units2023
Capital expenditures (planned) M AUD  ......  Subscription required
Subscription required - Subscription is required



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Feb 12, 2022
....................... Subscription required ....................... Subscription required Subscription required Feb 12, 2022
....................... Subscription required ....................... Subscription required Subscription required Feb 12, 2022
Subscription required - Subscription is required.

Staff:

ContractorsYear
Subscription required 2022

Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Corporate Presentation 2022
Press Release 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
Press Release 2010
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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