Hemi Development Project
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85km south of Port Hedland, Western AustraliaLocation -
Simple open pit with significant underground and regional potentialMine type -
13,198kozMineral Resources as at 31 March 2026 -
5,508kozOre Reserves as at 31 March 2026
The Hemi Development Project is a low-cost, long-life, large-scale gold development project located in the Pilbara region of Western Australia.
Northern Star acquired the Hemi Development Project from De Grey Mining Limited by way of a Court-approved Scheme of Arrangement on 5 May 2025.
The Hemi discovery is an intrusion-hosted form of gold mineralisation new to the Pilbara region and shows a scale of mineralisation not previously encountered in the Mallina Basin. Gold mineralisation at Hemi is hosted in a series of intrusions associated with stringer and disseminated sulphide rich zones.
The high value of the discovery is driven by its size, grade continuity and growth potential. Hemi has a mineral estimate of 11.2Moz and the potential to be mined by large-scale, low strip ratio, low-cost open pit mining.
Hemi currently comprises six main zones – Aquila, Brolga, Crow, Diucon, Eagle and Falcon. Mineralisation has been confirmed over an area of +2,000m north-south, +3,500m east-west and to depths of up to 500m in some areas. Hemi remains open in multiple directions and significant potential remains to further extend mineralisation.
