Kurnalpi is one of four projects within the KalNorth Gold Field. It is located 85km north-east of Kalgoorlie, on the north-north-west trending Norseman-Wiluna greenstone belt – an Archaean sequence of ultramafic, mafic, intermediate and acid intrusive and extrusive volcanic rocks with associated sediments.
Several deposits have been identified in the Kurnalpi project area, with the Brilliant deposit identified as a key target of gold mineralisation which is hosted by two sub-parallel dolerite units within komatiite flows.
A progressive drilling program to test for northern extensions of the Brilliant ore system was undertaken during 2012 and designed to test the strike extensions of the currently defined mineralisation. Results showed mineralised extensions of the altered dolerite host rock and more importantly located an additional altered and mineralised dolerite to the west of the resource.. The alteration and veining in the dolerite host rock shows similarities with Barrick’s Darlot mine. The significance of this being that the true potential of such deposits can take a long time to evolve. Exploration activity will continue to evaluate the mineralised extensions at depth and along strike.
In addition exploration activity during the latter part of 2012 was focussed on the Zandor trend where several high grade intersections where reported from RAB drilling within a sequence of strongly foliated mafic lithologies
Kurnalpi has a combined Indicated and Inferred Resource of 6.17Mt @ 1.2 g/t for 228,800oz Au. The Probable Reserve for the Brilliant Deposit stands at 1,090,000,t @ 1.7g/t for 59,930oz Au, with economics of the reserve based on trucking ore to Carosue Dam processing plant. Processing at site would be substantially more cost-effective for the Kurnalpi field and ultimately increase the ore Reserve. A future drilling program would be aimed at substantially growing the resource in order to justify a stand-alone operation.
Drilling map at Brilliant Prospect, Kurnalpi field
Cross-section of Brilliant Prospect