• Previous rock chip peak values of 50.5% Cu, 6.9g/t Au & 53g/t Ag.
  • 15 of 34 previous rock chip samples by Spartan Exploration Pty Ltd recorded above 1% Cu with a peak of 50.5% Cu.
  • 10 recorded copper-gold samples associated with favourable gossan mineralisation, malachite, chalcocite, cuprite (copper carbonates) within boxwork goethite, haematite (iron) gossanous occurrences over the length of the tenement.
  • Multiple ages of mineralisation previously documented.
  • Excellent historical geochemistry and mapping database.
  • Limited previous drilling on project and no geophysics or drill testing of high-grade copper-gold occurrences.
  • Targeting intrusion, VMS and shear related Cu-Au-Ag mineralisation systems.


The Blue Devil Project is on Exploration Licence Application E80/6047 located 45km east northeast of Halls Creek in Western Australia and accessible through station and exploration tracks. The project consists predominantly of outcrops of the Olympio Formation, of the Halls Creek Group. This unit is a weakly to moderately metamorphosed sedimentary unit consisting of mudstone, siltstone, greywacke, quartz wacke, and arkose. It is interpreted to be turbiditic in origin. Overlying the Olympio Formation, several very prominent ridges of Ruby Plains Group sediments are present. These ridges consist of a very shallow easterly-dipping sandstone unit known as the Mt Kinahan Sandstone.

Figure 1.    Previous rock chip samples coloured by Cu % with the five highest gold rock chip samples labelled. Geology and structural interpretation as base.


Mineralisation: Structural Copper- Gold.

Historic exploration uncovered copper mineralisation within the ENE and NW-trending structures within the Olympio Formation and the Eliot Range Dolomite. The copper mineralisation within these structures has only been observed in the weathered domain, and the copper mineralogy is malachite, chalcocite, and possibly cuprite. Rock chip sampling of these mineralised structures, which typically measure between 0.3 and 1.0 m across (but can be up to 3m), has returned exceptional copper grades with many samples exceeding 10% Cu, and a number exceeding 30% Cu. The peak assay from sampling conducted by Spartan Exploration was 50.5% Cu.

The mineralisation within these structures continues sporadically across the width of the tenement, with mineralised locations mapped in the west, centre, and east of the tenement; a distance of about 10km. This suggests a large mineralised system with significant fluid flow may have been involved in the mineralising event.

The copper-rich structures contain variable amounts of other elements of potential economic interest, notably gold, which although generally around 0.1 — 0.5 g/t in the copper-bearing material, locally achieved several assays above 3 g/t Au, with a peak of 6.9 g/t Au. The samples containing higher gold content tended to be located in the NW cross structures rather than the extensive NNE structures. Silver was variable, with a peak of 84 g/t Ag, and bismuth was highly variable (generally in the 1 — 20 ppm range, but locally up to 0.36% Bi), and several other elements showed various low levels of anomalism including arsenic, lead, zinc, tin, antimony and tungsten.

Gold mineralisation, separate to that which accompanies copper in the previously described mineralisation, is also known on the tenement. During field reconnaissance, Spartan Exploration geologists sampled a goethite-filled silica gossan associated with quartz veining. The sample assayed 4.5 g/t Au, along with 1,730 ppm As and elevated Ag, Bi, Cu, and Pb. The outcrop appeared to extend for several 10s of metres to the south-southwest.

Previous exploration of the Blue Devil Project area has been completed by Pickands Mather International in the late 1960’s, Navigator Resources Limited from 2001 – 2002, Sipa – Gaia NL from 2000 – 2006 and Spartan Exploration Pty Ltd from 2014 - 2020.

Sipa-Gaia NL undertook considerable early-stage exploration including rock chip sampling (237 samples on project area), soil sampling, stream sediment sampling, mapping and drill testing. Out of the 237 rock chip samples assayed by Sipa from the current project area 13 samples assayed greater than 1% Cu (range 0.0005% - 47.3% Cu). Other interesting rock chip results include 1.4% Pb, 1.02% Zn & 52.5g/t Ag. The drilling they undertook was targeting stratiform base metal mineralisation in the eastern project area and the areas of higher-grade copper and gold rock chip anomalism have not been tested. Spartan Exploration NL assayed 34 rock chip samples from the project area with 15 of those samples assaying at greater than 1% Cu (range 0.004% - 50.5% Cu).

Initial exploration by the Company is likely to include rock chip sampling and a geophysics program consisting of heliborne EM and ground gravity surveys to rapidly identify targets for drill testing.