Summary

Mine Type	Open Pit
Stage	Reclamation
Commodities	Iron Ore
Mining Method	Truck & Shovel / Loader
Production Start	...
Snapshot	Operations at the Jack Hills mine commenced late 2006. Mining operations ceased in 2012 and the Jack Hills mine was placed in a partial care and maintenance phase. Crosslands Resources Pty Ltd (the Licence Holder) is currently undertaking demobilisation and rehabilitation of the mine site. Following the acquisition, Sinosteel announced its intention to review the Jack Hills expansion project and the Oakajee Port and Rail project. However, as of December 2024, there is no information on the resumption of mining operations at the Jack Hills mine.

Deposit type

• Banded iron formation

Summary:

The Jack Hills rise up to approximately 300 m above the flat plains of the Murchison River, which is between 400 to 450 m above sea level. The hills extend for approximately 60 km, arcing north-east to south-west. The Jack Hills occur along a thin greenstone belt, within the granitic rocks and granitic gneisses of the Narryer Terrane (Aquaterra, 2010). The dominant lithologies include Banded Iron Formation (BIF), chert, quartzite, mafic and ultramafic rocks and siliciclastic rocks (Spaggiari, 2007 in Aquaterra, 2010).

The Jack Hills deposit comprises three main groups of rocks: Banded Iron Formation, Massive Iron Mineralisation, and mafic to ultramafic dykes and sills. All of which are flanked to the northwest by a massive granitic body.

The rocks are broadly similar to other Archaean greenstone belts in the Yilgarn Block in structural style and metamorphic grade. Unlike most typical greenstone belts there is little outcrop of mafic/ultramafic or felsic volcanic material, instead significant clastic meta-sedimentary sequences are exposed.

The BIF units and massive iron lenses which make up the Jack Hills ore types form the prominent ridge lines. The ridges rise above the surrounding granite flat lands, ranging from ~530 m RL to ~697 m RL at the highest point at Mt Hale.

Mining Methods

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Comminution

Crushers and Mills

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Processing

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Commodity Production

Personnel

Job Title	Name	Profile	Ref. Date
.......................	.......................		Dec 18, 2024