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Australia

Jundee Mine

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Summary

Mine TypeUnderground
StatusActive
Commodities
  • Gold
Mining Method
  • Longhole open stoping
  • Airleg stoping
Backfill type ... Lock
Production Start... Lock
Mine Life... Lock
SnapshotThe Jundee operations form part of the Yandal Production Centre and include the Jundee mine, the satellite deposits Julius and Ramone, and the Jundee processing plant. Mining at the Julius open pit ceased as planned at the end of 2022.

The Jundee mine comprises multiple distinct orebodies, mined from both open pit and underground since 1995. Four portals provide access, with the most recent, Griffin, being developed in 2024. In FY25, Griffin continued to ramp up, with the transition to stoping scheduled for 2H FY26.

Owners

SourceSource
CompanyInterestOwnership
Northern Star Resources Ltd. 100 % Indirect
The Jundee Project's Leases are 100% registered to Northern Star Resources Ltd.

Contractors

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Deposit type

  • Vein / narrow vein
  • Breccia pipe / Stockwork

Summary:

Jundee
Jundee is an Archean gold mineralised deposit that is part of the Northern Yandal Greenstone belt. Gold mineralisation is controlled by a brittle fracture-system, is commonly fracture-centred, and is predominantly hosted in dolerite and basalt. Mineralisation can be disseminated or vein style host.

Jundee Open Pit
Mineralised zones are variable with true width ranging from 0.5m to 30m. They are extensive along strike and down dip, up to 450m and 350m, respectively.

Jundee Underground
Mineralised zones are narrow, with true width ranging from 0.3 to 1m, but can be up to 5m. They are extensive along strike and down dip, up to 1000m and 500m, respectively, but are often highly discontinuous, and generally have a tabular geometry.

Depth = surface to ~1710mRl (~845m below surface).

Jundee (Ramone)
Ramone is Archean gold mineralised deposit that is part of the Northern Yandal Greenstone belt. Gold mineralisation is hosted by a granite and controlled by a brittle stockwork fracture-system within a north-easterly trending shear zone. The mineralisation formed by a stockwork of veins with smoky quartz, sulphides, minor carbonate, chlorite and sericite hosted by a monzonitic granite. The mineralisation is intruded by an east-west striking (about 096 degrees) vertical dolerite dyke that cross cuts the mineralisation and is part of a suite of magnetic dolerite dykes that intrudes the Yandal belt in an east-west direction.

Mineralised zones are variable with true width ranging from 0.5m to 20m. They are extensive along strike and down dip, up to 600m and 400m, respectively. Depth from surface is 400m approximately.

Jundee (Julius)
Julius is an Archean gold mineralised deposit that is part of the Northern Yandal Greenstone belt. Gold mineralisation is controlled by a shear system and is predominantly hosted in ultramafic and granite. Mineralisation can be lateritic, or supergene or vein style hosted in nature.

Mineralized zones are variable with true width ranging from 0.5m to 20m. They are extensive along strike and down dip, and form supergene and laterite horizons, respectively.

Mineralisation occurs form near surface and is open at depth >200m approximately.

Reserves

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Mining Methods

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Heavy Mobile Equipment

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Comminution

Crushers and Mills

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Processing

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Commodity Production

CommodityUnits2025202420232022202120202019201820172016
Gold oz  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe295,053283,288233,556209,515
All production numbers are expressed as metal in doré.

Operational metrics

Metrics2025202420232022202120202019201820172016
Annual milling rate  ....  Subscribe
Annual processing capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe1.8 Mt1.35 Mt
Ore tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe2,092,558 t1,678,592 t1,473,241 t1,245,354 t
Waste  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
Tonnes milled  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe2,207,099 t1,839,273 t1,527,479 t1,290,366 t

Production Costs

CommodityUnits202520242023202220212020201920182017
Credits (by-product) Gold AUD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
Total cash costs (sold) Gold AUD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
All-in sustaining costs (sold) Gold AUD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 981 / oz **   870 / oz **   948 / oz **  
All-in costs Gold AUD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
** Net of By-Product.

Mine Financials

Units202520242023202220212020201920182017
Growth Capital M AUD  ....  Subscribe
Sustaining costs M AUD  ....  Subscribe
Revenue M AUD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 527.9   485.8   379.7  
Pre-tax Income M AUD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 217.8   239.5  
EBITDA M AUD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 274.4   284.9   213.2  
Operating Cash Flow M AUD  ....  Subscribe

Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 30, 2025
....................... Subscription required ....................... Subscription required Subscription required Aug 30, 2025
....................... Subscription required ....................... Subscription required Subscription required Aug 30, 2025

Workforce

Total WorkforceYear
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Aerial view:

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