Great Boulder Resources (ASX:GBR) has reported ‘high-grade’ gold intersections at Mulga Bill East, extending the discovery to 1.5km of strike at its Side Well Gold Project near Meekatharra in Western Australia.
Recent reverse circulation (RC) drilling returned 2m @ 30.76 grams per tonne gold (Au) from 133m, including 1m @ 60.90g/t Au from 134m; 4m @ 7.60g/t Au from 60m; and 2.64m @ 14.62g/t Au from 292.36m.
The Mulga Bill East area sits 200–300m east of Mulga Bill and remains outside the existing 782,000-ounce Mulga Bill-Eaglehawk resource within the 1.02-million-ounce (Moz) Side Well Gold Project. The discovery has grown from the 900m of strike reported in July to 1.5km and remains open along strike and at depth.
Managing Director Andrew Paterson notes that many of the ‘high-grade’ intersections within Mulga Bill East correspond to west-dipping vein-hosted lodes intersected deeper down at Mulga Bill.
“Many of these results are up-dip projections of veins we’ve already identified,” Paterson remarks.
“The structural continuity and ongoing success in the Mulga Bill-Eaglehawk area continue to support our belief that this is a very significant gold system, with potential to become one of the biggest gold endowments in the Meekatharra field.”
Other significant intersections from recent drilling include 2m @ 5.90g/t Au from 73m; 3m @ 3.26g/t Au from 119m; and 2m @ 4.18g/t Au from 171m.
Great Boulder holds a total resource of 1.5Moz across its Side Well and Peak Hill projects. The Side Well Project contains 1.02Moz, comprising 626,000 ounces in the indicated category and 395,000 ounces inferred.
The company reports its Side Well team is cutting and sampling the last of the diamond holes at Mulga Bill and Golden Bracelet, and says it is planning further RC and diamond drilling to infill the Mulga Bill East area ahead of resource estimation.
Meanwhile, drilling at Peak Hill remains ongoing with two RC rigs and one diamond rig conducting extensional and exploration programs. The company says a resource update is expected by the end of 2026.
Great Boulder Resources is a mineral explorer focusing on gold and base metals in Western Australia.
Write to Paula Fabe at Mining.com.au
Main image: Great Boulder Resources
