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Great Boulder Resources Side Well

Great Boulder extends Mulga Bill mineralisation

Great Boulder Resources (ASX:GBR) has reported gold intersections that extend known mineralisation at its 1.02-million-ounce Side Well Gold Project near Meekatharra in Western Australia.

Extensional reverse circulation (RC) drilling at Mulga Bill East confirmed mineralisation over a strike length of approximately 900m, extending 400m from the existing resource.

Key results from this area include 18m @ 7.36 grams per tonne gold (Au) from 120m, 6m @ 14.80g/t Au from 265m, and 2m @ 13.30g/t Au from 102m.

At Eaglehawk, drilling tested the margins of modelled mineralisation, demonstrating that gold mineralisation continues outside current resource envelopes. Intersections include 4m @ 9.12g/t Au from 80m and 0.64m @ 82.80g/t Au from 265.36m.

The combined Mulga Bill-Eaglehawk deposit now extends over 2.5km of strike length.

Managing Director Andrew Paterson says extensional drilling at Mulga Bill and Eaglehawk has intersected more ‘high-grade’ gold in several areas, extending gold lodes in several parts of the system.

“The latest drilling has defined extensions to the Mulga Bill East area, with results such as 18m @ 7.36g/t Au [approximately] 140m north of the current resource and 4m @ 4.47g/t Au at the southern end,” Paterson says.

“As a result, we have extended the known mineralisation in this area by more than 400m, defining high-grade gold over a total of 900m of strike.”

Great Boulder adds that one diamond drill hole was also completed at Ironbark for geotechnical assessment and metallurgical sampling, returning 5.89m @ 18.10g/t Au from 106.5m.

Besides Side Well, Great Boulder also holds the recently acquired Peak Hill Gold Project, which contains a mineral resource estimate of 481,000 ounces of gold. Two rigs are currently operating at the site, with the company planning to complete 40,000 of RC drilling in the current half-year.

The company notes initial results from Peak Hill are expected in late August.

Meanwhile, drilling remains ongoing at Side Well, with a diamond rig operating at Golden Bracelet and an aircore rig testing regional targets within the Eastern corridor.

Great Boulder Resources is a mineral explorer focusing on gold and base metals in Western Australia.

Write to Paula Fabe at Mining.com.au

Images: Great Boulder Resources
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Written By Paula Fabe
Paula has over 15 years of combined experience in PR, brand communications, and content marketing. She has experienced both agency and client sides of content ideation and production, mentoring young creatives along the way. She has also worked directly with small businesses in the Philippines, helping shape and refine their brand stories. Off-duty, she is co-founder of a brunch social for young women, building a community grounded in growth, connection, and mentorship. In her leisure time, she enjoys a strong cup of coffee and a good K-drama and spending time with her family.