Year in Review: Great Boulder Resources delivers solid year in 2022

Great Boulder Resources (ASX:GBR) has enjoyed a solid year in 2022, progressing its projects in Western Australia just a few short years after listing on the Australian Securities Exchange (ASX).

The Perth-based junior exploration company has discovered the Side Well Gold Project, in the heart of a multi-million-ounce field.

Strategically located adjacent to Meekatharra in Western Australia, throughout 2022 Side Well has been defined as a ‘high-grade’ gold project where Great Boulder is aggressively drilling at Mulga Bill, Ironbark, and other prospects within the project.

Great Boulder has great 1H 2022

In February this year, the company delivered ‘high-grade’ first assay results from Phase 5 AC drilling at the Mulga Bill prospect within its Side Well Gold Project in Western Australia.

Hole 21MBAC119 intersected 3m @ 8.56g/t Au from 147m, including 1m @ 23.78g/t Au to end of hole.

This hole, 1km along strike and to the south of the Mulga Bill – Loaded Dog corridor, extends the overall strike footprint at Mulga Bill to 6km.

During February and March, a pole-dipole IP survey was completed on east-west lines over selected areas of Mulga Bill.

The company also made a decision to change assay laboratories at the start of 2022, which had drastically reduced assay turnaround times

The company also made a decision to change assay laboratories at the start of 2022, which had drastically reduced assay turnaround times.

By the end of March, Great Boulder was well-advanced on its goal of drilling 100,000m in 2022, and had $2.1 million cash at hand at the end of Q1 2022.

By mid-June, assays had been received for 3 of the 7 holes drilled at the Ironbark discovery east of Mulga Bill. Assays continued to flow through to round out the first half of the year.

Great Boulder Resources

2H 2022 was off to a flying start

In early July, Great Boulder reported the presence of ‘significant’ gold grades following its recent drilling campaign at the Mulga Bill prospect, which is part of its Side Well Gold Project in Western Australia.

The results, generated via the final 2 drillholes of a diamond drilling operation and ongoing RC and AC drilling campaigns, had defined key follow up targets and have confirmed a 6km strike length that remains open in both directions, with a potential expansion to the west.

Key results from that diamond drilling included:

  • Hole 22MBRC005: 5.9m @ 39.37g/t Au from 84.3m, incl. 3.6m @ 63.79g/t Au from 85.4m, with 0.3m of core loss from 85.1m.
  • Hole 22MBRC007: 1m @ 12.25g/t Au from 224m.

By September, as Mining.com.au reported, the company had reported a new ‘high-grade’ gold lode from results of Mulga Bill Phase 3 and Phase 4 reverse circulation (RC) drilling at the Side Well Gold Project.

Results from the recent RC drilling returned significant intersections including:

  • 8m @ 5.5g/t Au from 110m and 6m @ 25.83g/t Au from 268m in hole 22MBRC055, with the deeper intersection interpreted to represent a new ‘high-grade’ lode in fresh rock approximately 90m to 100m east of precious ‘high-grade’ intersections.
  • 8m @ 54.60g/t Au from 120m in 22MBRC056.
  • 6m @ 4.59g/t Au from 94m, including 2m @ 10.25g/t Au from 94m and 5m @ 5.83g/t Au from 113m in hole 22MBRC046.

Great Boulder Managing Director Andrew Paterson said at the time Mulga Bill was continuing to deliver a string of extremely high-grade gold intersections as the company continues defining the extent and orientation of these structures.

Then in October, things got even better for the company as it received the highest-grade gold results from phase three RC drilling at the Ironbark prospect.

This program of RC drilling has intersected the ‘highest’ gold grades the company has seen at the prospect, and the intersections highlight the potential for ‘high-grade’ plunges within the wider mineralised zones. This drilling has also confirmed mineralisation within parallel steeply west dipping lodes located on or around the contacts between mafic and ultramafic rock units.

Significant intercepts recorded by Great Boulder included 15m @ 1.99g/t Au from 37m in 22IBRC022; 5m @ 51.65g/t Au from 106m including 1m @ 193.50g/t Au from 107m in 22IBRC024; and 8m @ 4.31g/t Au from 88m and 5m @ 6.10g/t Au from 122m in 22IBRC025.

In tandem with continued RC drilling at Mulga Bill and Ironbark, the company continues to focus on generative work north and south of Ironbark that will lead into new drill targets for 2023.

The company will continue to work towards the initial exploration targets and resource estimate for the project heading into the new year as well.

Write to Adam Orlando at Mining.com.au

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Written By Adam Orlando
Mining.com.au Editor-in-Chief Adam Orlando has more than 20 years’ experience in the media having held senior roles at various publications, including as Asia-Pacific Sector Head (Mining) at global newswire Acuris (formerly Mergermarket). Orlando has worked in newsrooms around the world including Hong Kong, Singapore, London, and Sydney.