The Edjudina project is considered prospective for gold and nickel-copper mineralisation. The project is located in the highly mineralised Eastern Goldfield Province of the Yilgarn Craton. The main exploration licences (E39/1765 and E39/1882) are situated within the Linden Terrain east of the Pinjin Fault and cover a north-northwest trending sequence of prospective greenstone lithologies over a strike extent of approximately 29 kilometres (Figure 5.1).
Gateway holds a 20% free carry interest over tenements E39/1765, E39/1882, E31/1150 and E31/1134 (Tenements) located in the Edjudian Project area as part of a joint venture with DiscovEx Resources Limited (ASX:DCX). The Company also owns a 1.5% gross revenue royalty over the Tenements and holds 26,315,789 shares in DCX.
The Edjudina project covers part of a greenstone belt, metamorphosed to greenschist facies but grading to amphibolite facies where contact metamorphism has occurred from the intrusion of foliated granitoid and migmatitic gneiss. The surface is covered by tertiary laterite and recent aeolian and alluvial sediments.
Historical exploration has included soil sampling and aircore drilling with significant gold anomalies identified at Phantom Well, Hornet and Hornet East (Figure 5.2).
The broader region contains a large number of historical mines and workings as well as substantial modern operations. Currently, the Edjudina project is situated proximal to a number of significant gold projects including:
Matsa Resources Ltd’s Lake Carey Fortitude gold project where mining recently recommenced with a trial mining study (25 July 2017).
St Barbara Ltd’s (St Barbara) Gwalia underground mine with a nominal capacity of 1.2 million tonnes per year of hard rock. St Barbara is a significant gold producer and explorer with a major tenement holding directly adjacent to the Edjudina project.
Saracen Mineral Holdings Ltd (Saracen) is a significant tenement holder in the region with the Deep South, Wallbrook, Red October, Whirling Dervish and Karari projects adjacent to Edjudina project. Saracen’s assets include the Carosue Dam processing plant and accommodation village.
AngloGold Ashanti Australia Ltd’s (AngloGold Ashanti) Sunrise Dam mine is a large underground operation (supplemented by stockpiled open pit material) that reached a processing capacity of 4 metric tonnes in 2016. AngloGold Ashanti is also a substantial tenement holder in the region.
The project area has been assessed in detail and a series of targets require either aircore or RC drilling. An exploration targeting exercise has also been undertaken resulting in the identification of a number of litho-structural and geochemical targets. Omni Projects also plans to complete a detailed magnetic and radiometric geophysical survey. This would be used for interpretation of the regolith and identification of any potential paleochannels that could render surface sampling ineffective. The newly interpreted data sets would provide the basis for an exploration targeting exercise, to highlight further areas for aircore drill testing.
Figure 5.1 and 5.2 Edjudina Project: Location and Geology. GSWA Geology and 3rd Party significant gold operations.
Historical exploration targets. Drill ready.