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Australia

Adelong Mine

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Summary

Mine TypeOpen Pit & Underground
Study CompletedPreliminary Economic Assessment
Study in ProgressFeasibility
StageRestarting
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
  • Avoca
  • Longhole stoping
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SnapshotThe Scoping Study for the Adelong Gold Project has demonstrated an attractive commercial project that can support an initial 5 year mine life. This underpins the future of this project as a regional processing centre.

The study is based on mining the Challenger, Caledonian and Currajong deposits. The main Challenger deposit was considered for open-cut mining and Challenger Extended deposit was selected for underground mining.

The Challenger Gold Mine, is a near-term production opportunity. The 70km² project area features a gold processing plant built in 2016/17.

Under a staged farm-in agreement with Adelong Gold, Great Divide Mining is the project operator and is focused on restarting operations while advancing exploration.

As of 2 June 2025, processing of remnant ore stocks and tails is underway. Initial concentrates are being stored within the Challenger process plant with gold separation for First Gold pour expected during Q3 FY25.

Owners

SourceSource
CompanyInterestOwnership
Great Divide Mining Ltd. (operator) 15 % Indirect
Adelong Gold Ltd 85 % Indirect
On 24 October 2024, Adelong Gold Limited announced that it has entered into a binding farm-in agreement with Great Divide Mining (GDM) for a staged acquisition of a 51% interest in the Adelong Gold Project.

Under the terms of the Agreement, GDM will be responsible for progressing the Adelong Gold Project towards production, with a key milestone of achieving first gold production within 12 months. Should this milestone not be met, Adelong Gold retains the right to revert to 100% ownership of the project.

The Agreement was finalised in March 2025, with GDM to earn a 15 per cent stake in Challenger by spending $300,000 on exploration. The company will earn a 51 per cent stake by reaching gold production.

Deposit type

  • Orogenic
  • Hydrothermal
  • Vein / narrow vein

Summary:

Deposit type:
The deposit type is that of narrow sub-vertical gold bearing quartz veins hosted in granitic rocks.
• Geological setting:
o Regionally:
- The Adelong Project is regionally situated at the southern end of the Lachlan Fold Belt (an orogenic zone containing many mineral deposits and mines).
- Two contrasting geological and tectonic environments dominate the Adelong region – the Wagga-Omeo Belt to the W (with Adelong on its eastern edge) and the Tumut Trough to the east.
- Adelong is located on the eastern edge of the Wagga-Omeo Belt. The WaggaOmeo Belt is a metamorphic terrain dominated by metasediments that were deposited in a marginal basin. Granitoids are widespread and occur near Adelong, along with numerous small gabbroic stock like bodies.
- The Tumut Trough is dominated by rift-related sequences of flysch sediments, mafic-felsic volcanics and related sediments, and minor granites.
- The N to NW trending, west dipping, Gilmore Suture defines the boundary between the two zones. The Gilmore Suture broadly defines a 300 km long belt of gold (+/- copper) mineralisation in which several mines and numerous prospects are located.

o Locally:
- In the local Adelong area the Gilmore suture bifurcates into the Gilmore Fault Zone (E of Adelong) and a subsidiary western structure known as the Wondalga Shear Zone (west of Adelong).
- The dominant rock types in the Adelong Project area are the Wondalga Granodiorite and the Avenal Basic Igneous Complex (ABIC) comprising norites, gabbros and diorites.

• Mineralisation style:
- Primary gold mineralisation is described as occurring in “reefs”, generally narrow sub-vertical vein or shear structures.
- These occur predominantly in N to NW trending structural corridors between the Wondalga Shear Zone and the Gilmore Suture.
- This area is the focus of strong deformation and late stage intrusive activity, accompanied by significant hydrothermal alteration and gold mineralisation.
- The aplite dykes, along with the mafic dykes and quartz veins, are regarded as the likely conduits and hosts of the gold mineralisation.
- However the source of the ore bearing fluids appears unrelated to magmatic fluids associated with the Wondalga Granodiorite or the ABIC themselves and a deep mantle source is postulated.

Reserves

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Mining Methods

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Heavy Mobile Equipment

Fleet data has not been reported.

Comminution

Crushers and Mills

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Processing

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Commodity Production

CommodityUnitsLOM
Gold oz 81,082
All production numbers are expressed as metal in doré.

Operational metrics

Metrics
Ore tonnes mined, LOM  ....  Subscribe
Tonnes processed, LOM  ....  Subscribe
* According to 2022 study.

Production Costs

CommodityUnitsAverage
Total cash costs Gold USD  ....  Subscribe
Assumed price Gold USD  ....  Subscribe
* According to 2022 study / presentation.

Project Costs

MetricsUnitsLOM Total
Initial CapEx $M AUD  ......  Subscribe
OP/UG OpEx $M AUD  ......  Subscribe
Processing OpEx $M AUD 31.7
G&A costs $M AUD 5
Total OpEx $M AUD  ......  Subscribe
Royalty payments $M AUD  ......  Subscribe
Gross revenue (LOM) $M AUD  ......  Subscribe
Pre-tax Cash Flow (LOM) $M AUD  ......  Subscribe
Pre-tax NPV @ 5% $M AUD  ......  Subscribe
Pre-tax IRR, %  ......  Subscribe

Personnel

Mine Management

Job TitleNamePhoneEmailProfileRef. Date
....................... Subscription required ....................... Subscription required ........... Subscription required Subscription required Jul 7, 2025
....................... Subscription required ....................... Subscription required ........... Subscription required ........... Subscription required Subscription required Jul 7, 2025

Workforce

EmployeesYear
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Aerial view:

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