Summary

Mine Type	Open Pit
Status	Care and Maintenance
Commodities	Gold
Mining Method	Truck & Shovel / Loader
Production Start	...
Mine Life	...
Snapshot	The Warrawoona Gold Project is an operating open pit mining operation with a standalone CIL processing plant which has commissioned in 2022. On June 28, 2024, Receivers and Managers and Administrators have been appointed to Calidus Resources Limited. Following an urgent assessment of its ongoing operations and development of a realisation strategy, on 5 July 2024, mining activity ceased and operations were transitioned onto care and maintenance. In January 2025, all Calidus shares were transferred for nil consideration to the DOCA proponent’s nominee. As of October 2025, there is no new information about the mine.

Deposit type

• Vein / narrow vein

Summary:

The Warrawoona Project leases lie within the Warrawoona Group, one of the oldest greenstone belts within the Pilbara Craton. Composed largely of high-Mg basaltic lavas with lesser tholeiite, andesite, sodic dacite, potassic rhyolite, chert and banded iron formation (BIF), all metamorphosed to greenschist facies, the Warrawoona Group is sandwiched between the Mount Edgar batholith to the north and the Corunna Downs batholith to the south.

Gold occurs in quartz veins and stringers in the Klondyke, Copenhagen and Fieldings Gully Shears and mineralisation is associated with quartz-carbonate-sericite-pyrite alteration. Quartz veins and stringers are generally approximately parallel to the predominant shear direction. The bulk of the gold mineralisation is hosted in strongly sericitised and sheared mafic units with thin chert bands marking probable stratigraphic breaks.

Over some abandoned workings gold mineralisation is associated with copper as indicated by the presence of malachite and other copper carbonates.

The gold mineralisation identified to date at the Klondyke, Fieldings Gully and St George prospects consists of a number of interpreted mineralised lodes striking approximately 1350 and dipping steeply (80°-85°) to the north, Copenhagen has a similar strike but dips less steeply (at 70°) to the north.

Dimensions
At Klondyke (KL), mineralisation has a sub-vertical dip as and ranges from 2m to 20m thick. The resource extends over approximately 5.1 km of strike and extends to a vertical depth of over 500 metres. The St George Trend mineralisation has a sub-vertical dip and ranges from approximately 1 m to 10 m thick with an approximate strike of 1.6 km extending to a vertical depth of approximately 200 m.

The Resource is currently considered open along strike and down dip. Copenhagen Mineral Resources have a strike length of approximately 250 m with a steep southeasterly plunge and a steep northerly dip. Mineralised lodes range from 2m to 10m thick and extend to a vertical depth of 200m. Fieldings Gully mineralisation has a sub-vertical dip and ranges from 2m to 10m thick. The resource extends over approximately 440m of strike and extends to a vertical depth of 140m.

Mining Methods

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Comminution

Crushers and Mills

- subscription is required.

Processing

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Commodity Production

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Operational metrics

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