Astral Resources extends Eos gold deposit with best intercepts to date
Reverse circulation (RC) and air core (AC) drilling at the Eos deposit within Astral Resources’ (ASX: AAR) Mandilla gold project in Western Australia has returned some of the best bedrock gold intercepts to date.
An 11-hole RC and 37-hole AC program aimed to extend the Eos palaeochannel to the south and test for primary Archaean gold below the palaeochannel to the east of known mineralisation.
A total of 14 AC holes ended in mineralisation demonstrating that more bedrock upside remains, with best bottom-of-holes results being 1 metre at 3.54 grams per tonne gold from 68m; and 3m at 1.44g/t gold from 60m.
Other AC intercepts were 6m at 3.92g/t gold from 51m; 5m at 3.70g/t gold from 48m; 4m at 3.33g/t gold from 44m; 4m at 1.29g/t gold from 58m; 2m at 1.73g/t gold from 46m; 4m at 2.35g/t gold from 51m; and 3m at 3.10g/t gold from 45m.
The results are reported to have extended the high-grade central portion of the Eos palaeochannel by approximately 120m to the south and 320m south of the Eos 48,000 ounce mineral resource estimate pit shell.
Reverse circulation assays
Best RC assays of 6m at 5.57g/t gold from 48m and 4m at 3.22g/t gold from 38m demonstrated the potential for a shallow primary gold resource in addition to an expanding palaeochannel deposit sitting above the deposit’s Archaean rocks.
Drilling also produced 3m at 2.81g/t gold from 57m; 19m at 0.65g/t gold from 90m; and 2m at 2.82g/t gold from 62m.
All results occur below the base of transported cover, representing primary Archean gold mineralisation similar to the project’s Theia deposit.
Managing director Marc Ducler said he was pleased with the results delivered from the reverse circulation and aircore work.
“This program has delivered on both fronts… it has extended the [Eos] high-grade central channel by a further 120m to over 600m in total strike which remains open to the south,” he said.
“A small program of diamond drilling is now required at Eos for us to gain a better insight into the nature and possible structural controls of the primary gold mineralisation in this area.”