Yandal Resources Ltd (ASX:YRL) has boosted the potential of Gordons Gold Project near Kalgoorlie in Western Australia with the discovery of new gold zones during recent reconnaissance aircore drilling at Malone and Gordons Dam Southeast prospects.
A total of 200 aircore holes for 9,165 metres were completed at the Malone, Gordons Dam SE, Andrews, Brayshaw, Bradman, Holloways and Holloways South prospects to test early-stage gold targets beneath depleted surficial sediments.
The new zones of bedrock gold mineralisation are adjacent to shallow high-grade gold mineralisation at the Gordons Dam prospect and include several end-of-hole intercepts that are open in all directions.
New drill programs to be designed
Managing director Lorry Hughes said: “Transitional and primary mineralisation has been returned from a variety of host rocks in at least two cross-cutting directions and in multiple sub-parallel zones.
“Very high-grade primary mineralisation intersected thus far from earlier RC and diamond drilling programs is hosted within quartz veins and shears within and at contacts between mafic and intrusive porphyry rocks.
“Once the pending RC assays results are returned in full, new RC and diamond drilling exploration programs will be designed to test for mineralisation at depths of 250-400 metres below surface”.
Strike length extended to 1.6 kilometres
Around 93 vertical aircore holes for 5,650 metres were completed along strike from and in areas adjacent to known mineralisation within shallow palaeochannel sediments, porphyry, and mafic rock types.
Numerous intersections were returned, which has resulted in the interpreted strike length of primary mineralisation zones being extended to around 1.6 kilometres in the east-west direction and open to the east.
Highlights from Malone include 7 metres at 1.16 g/t gold from 80 metres, including 3 metres at 1.48 g/t gold at end-of-hole, 24 metres at 0.22 g/t gold from 56 metres, including 4 metres at 0.99 g/t gold, and 7 metres at 0.37 g/t gold from 52 metres, including 3 metres at 0.79 g/t gold at end-of-hole.
Follow-up targets to be tested
The aircore drill holes were completed to blade refusal and as has been the case with earlier aircore programs, multiple strong intercepts were returned from just above or at the end-of-hole.
A number of these intercepts occur on adjacent lines around 120 metres apart, are interpreted to represent subparallel mineralisation zones and are open in most directions.
Once results are returned from a further 19 aircore holes at Malone prospect and 84 reverse circulation (RC) holes for 8,372 metres from the Gordons Dam, Gordons Dam SE, Malone, Bradman, Andrews and Star of Gordon prospects an assessment of RC, aircore and diamond drill targets will be undertaken.
Follow-up targets are planned to be tested during the June quarter.
Gordons Dam SE highlights
At Gordons Dam SE highly encouraging intercepts were returned from an area around 600 metres southeast along strike from the Gordons Dam palaeochannel mineralisation include:
- 5 metres at 0.89 g/t gold from 72 metres, including 1-metre at 3.79 g/t gold at end-of-hole;
- 2 metres at 1.64 g/t gold from 44 metres at end-of-hole;
- 12 metres at 0.16 g/t gold from 32 metres, including 4 metres at 0.41 g/t gold; and
- 5 metres at 0.34 g/t gold from 44 metres at end-of-hole.
Next steps
Key exploration activities planned during the June quarter at the Gordons project include:
- Receive and review all pending aircore and RC drill hole results in April and plan follow-up RC and diamond programs to commence in May-June;
- Recommence expanded aircore drilling in extensional areas to commence in May.