Summary

Mine Type	Open Pit
Status	Care and Maintenance
Commodities	Vanadium
Mining Method	Truck & Shovel / Loader
Production Start	...
Snapshot	The Windimurra vanadium facility was restarted in 2012 after several years of closure and produced small quantities of ferrovanadium until operations were suspended in February 2014 due to a fire. The plant was scheduled to be rebuilt by February 2015, with full production estimated at 5,300 to 5,700 short tons (13.1 million pounds) of contained vanadium per year. The facility remains on care and maintenance, with a program in place to maintain infrastructure. The site includes one of the largest roasting kilns in the world. Windimurra is expected to be a major primary vanadium producer, leveraging significant existing infrastructure. According to AVPL, the project benefits from historic investments, making it the lowest capital intensity vanadium development globally. Redevelopment plans include a new milling and beneficiation plant, along with the recommissioning of existing infrastructure, such as roads, mine pit, gas pipeline, kiln, power station, and camp.

Deposit type

• Intrusion related
• Magmatic

Summary:

Geology
The Windimurra vanadium deposit is hosted within the Shepherd's Discordant Zone (SDZ), which is part of the Windimurra complex. The SDZ is characterised by magnetite and magnetite-bearing gabbro, which is a transgressive sill like body extending over a strike length of 45 kilometres and having a thickness ranging from 500 metres to 600 metres. It is up to 1 kilometres wide at surface. The magnetite is titano-magnetite containing 10% to 20% TiO2 as ilmenite.

The Project is located in the north of the SDZ in the Hawkstone Ridge and Shepherd's Hill areas that show progressive upwards fractionation consisting of anorthositic magnetite gabbro and numerous magnetite layers and lenses from 5 centimetres to 2 metres thick. The lower 150 metres of this succession contains the vanadium deposit.

The vanadium titanomagnetite (VTM) bearing gabbro is deeply weathered down to about 50 metres below the present surface. From fresh rock, weathering passes upwards through a zone of saprock up to 5 metres thick, into saprolite (30 metres to 40 metres thick), then to a mottled clay zone 3 metres to 10 metres thick. A lateritic caprock up to 5 metres thick has largely been eroded except in the vicinity of Hawkstone Ridge. The base of complete oxidation is about 30 metres below surface.

Magnetite-bearing gabbro is more susceptible to weathering than magnetite. Weathering of magnetite and other iron-bearing minerals along fractures and grain boundaries results in the formation of fibrous and spotty goethite. Ilmenite remains relatively unchanged, except for a textural change from trellis-like lamellae to granular and rounded blebs.

Mineralization
Most of the vanadium mineralization is in VTM-bearing gabbro and leucogabbro in a broadly continuous layered sequence varying in thickness from 20 to 80 meters.

VTM forms large granular aggregates up to 5 millimeters wide, inter-grown with lenticular bodies of silicate minerals. The VTM is mainly composed of magnetite that can contain up to 30% by volume of ilmenite inter-growths derived from exsolution. Ilmenite occurs as fine-grained lamellae within fresh magnetite, with up to 10% as coarser, blebby inter-growths (<2 millimeters diameter) in weathered magnetite.

Ilmenite may contain up to 0.5% V2O5, and some pyrite contains up to 0.1% V2O5. Pyrite makes up to 1% of the volume of fresh rock. Other minor sulphides present are pentlandite, pyrrhotite, chalcopyrite, and violarite.

The deposit represents part of a large layered intrusion. Mineralisation comprises magnetite- titanium-vanadium horizons within the Windimurra Complex — a large differentiated layered ultramafic to mafic intrusion within the Murchison Province of the Yilgarn Craton.

Mining Methods

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Comminution

Crushers and Mills

Processing

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Commodity Production

Personnel

Job Title	Name	Profile	Ref. Date
.......................	.......................		Aug 18, 2025
.......................	.......................		Aug 18, 2025