Mulga Tank

  • WMG’s flagship project – discovery of an extensive working magmatic nickel sulphide mineral system
  • “Belt scale” opportunity – frontier exploration under cover with a strategically assembled 425km2 position on the significantly under-explored Minigwal Greenstone Belt
  • Project contains the entire Mulga Tank Ultramafic Complex (WMG 100%) – a major ultramafic dunite intrusion analogous to complexes hosting the world class Mt Keith and Perseverance nickel deposits
  • Limited drilling through sand cover yet 23 out of 29 diamond holes to date have intersected visible nickel sulphide mineralisation
  • Recent WMG diamond holes show extensive intersections of Type 2 Mt Keith-style disseminated nickel sulphide mineralisation:
  • MTD023 cumulative 693.5m at 0.28% Ni, 128ppm Co, 61ppm Cu, 27ppb Pt+Pd with S:Ni 1.1
  • MTD026 cumulative 840m at 0.28% Ni, 140ppm Co, 103ppm Cu, 24ppb Pt+Pd with S:Ni 1.6
  • MTD027 cumulative 694m at 0.31% Ni, 141ppm Co, 68ppm Cu, 30ppb Pt+Pd with S:Ni 1.0
  • Intersections of high-grade remobilised massive sulphide and immiscible sulphide globules indicate a likely Type 1/2 hybrid system more like Perservance with potential for basal massive sulphide accumulations
  • Further 15km trend of interpreted komatiite channel flows completely unexplored for Ni-Cu-PGE
  • Belt also considered prospective for orogenic gold


The Mulga Tank Project comprises exploration licences E39/2132, E39/2134, E39/2223 and exploration licence application E39/2299, covering an area of 425km2. The project is located 190km east-northeast of Kalgoorlie in the Duketon Domain of the Burtville Terrane, in the Eastern Goldfields Province of the Yilgarn Craton, Western Australia.

The project covers the majority of the significantly under-explored Minigwal Greenstone Belt. The project is a frontier play offering exciting exploration potential, exploring under shallow sand cover in this overlooked area of the eastern Yilgarn Craton.

Tenement E39/2132 contains the entire Mulga Tank Dunite Intrusion, a major ultramafic intrusion, containing an extensive magmatic nickel sulphide mineral system. The larger project area contains a 15km trend of interpreted komatiite flow channels emanating from the Mulga Tank intrusion that have received little to no exploration focus to date. The Minigwal Greenstone Belt is also consider prospective orogenic gold mineralisation.

The Minigwal Belt and Mulga Tank dunite were first identified by BHP in the 1980’s yet are still under explored due to the sand cover. Most recent exploration by Impact Minerals (ASX:IPT) (2013-2016) demonstrated a working Ni-Cu-PGE magmatic sulphide mineral system, with sulphide intersections observed within 8 diamond drill holes drilled to test several electromagnetic (EM) geophysical anomalies, including 2m @ 1.3% Ni and 0.25m at 3.8% Ni, 0.7% Cu and 0.7g/t PGE. This exciting work, confirming a sulphide mineral system with a parent magma reaching sulphur saturation and precipitating high-tenor Ni-sulphides, enhances the prospectivity of the intrusion – the challenge now remains for WMG to identify locations where significant accumulations of these sulphides may have occurred.

WMG is methodically exploring the intrusion with a series of high-resolution ground geophysical surveys aimed at “unlocking” the project. This work includes a recent high-resolution gravity survey and Moving Loop Electromagnetic (MLEM) survey. This dataset aims to better define the dunite intrusion and drill targets that the Company is currently testing with a maiden ten-diamond diamond drilling program currently underway.