Overview

Mine Type	Open Pit
Stage	Permitting
Commodities	Aluminum Alumina
Mining Method	Truck & Shovel / Loader
Mine Life	...
Snapshot	The Company’s integrated HPA production consists of two operating sites: one being the mining and beneficiation of feedstock at Cadoux and second the refining of feedstock for HPA production at Kwinana.

Deposit type

• Metamorphic hosted

Summary:

The project area is underlain by weathered granitoid Archaean rock of the Yilgarn Granites is the likely parent material for the kaolin. Here, deep weathering of the feldspathic and ferromagnesian minerals within the metamorphosed granitic has resulted in the formation of kaolinite. There is no outcrop but recognizable granitoid fragmental rocks are sometimes present just below surface. The crust of the overburden comprises gravel and sands over reddish to off-white clay. White kaolin underlies the overburden followed by weathered, partial oxidized and then fresh granitoids at depth.

The recent drilling at the property has revealed a weathering profile which is very common in Western Australia with the granitoid rocks, deeply weathered forming a leached, kaolinized zone under a lateritic crust. Analysis at the Laboratory shows particle size distributions are typical of “primary style” kaolin clays produced from weathered granites. The crust of overburden comprises gravel and sands over reddish to off-white clay to an average depth of 5 m. White kaolin then averages approximately 16 m before orange to yellow sandy and mottled clays are intersected which are followed by recognisable rounded granitoid material. The thickness of the kaolin profile varies from less than 1 m to a maximum of 22 m. Fresh granitoids are found at depths of between 10 m and 30 m. All kaolin resources are within 4 m to 11 m of the surface.

The upper low K2O zone (K2OCD= 1) is generally thicker up to roughly 20 m than the lower zone (‘high’ K2O – K2OCD=2) which is up to approximately 10 m thick.

The mineralisation is close to horizontal, dipping on average about 1° towards 070°. The strike extent is roughly 1 km and across strike width is roughly 500 m for the bulk northern/central part of the deposit, with the total north south dimension being ~1.4 km including the un-mineralised central/south portion (see plan view diagram in body of report). The combined thickness of the mineralisation zones is greatest in the north-eastern part of the deposit (~15 m to 25 m), thinning
to the northwest (~4m) and southwest (~4 m to 12 m).

Mining Methods

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Comminution

Crushers and Mills

Processing

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Production

Operational metrics

Metrics
Annual ore mining rate	....
Annual processing rate	....

Personnel

Job Title	Name	Phone	Profile	Ref. Date
.......................	.......................			Apr 8, 2021
.......................	.......................	...........		Dec 1, 2023