Kalkine: Strong Drill Results Boost Growth Prospects at Ironbark Deposit

June 13, 2025 04:14 PM AEST | By Team Kalkine Media

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Kalkine: Strong Drill Results Boost Growth Prospects at Ironbark Deposit — Image source: Shutterstock

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Highlights

Ironbark deposit at Side Well shows promising expansion with high-grade drill hits

Great Boulder Resources anticipates upcoming Scoping Study and further drilling

Fieldwork for mining approvals at Ironbark expected to start in July

Great Boulder Resources (ASX:GBR) has reported promising drill results from the Ironbark deposit, part of its flagship Side Well Gold Project in Western Australia. The results point to significant resource growth potential and underscore the strategic value of the Ironbark zone in the company’s broader exploration efforts.

Ironbark currently hosts a mineral resource of 100,000 ounces at an average grade of 3.3 grams per tonne (g/t) gold. This deposit is interpreted as an orogenic gold system, with mineralisation occurring along the contacts of mafic and ultramafic rocks trending north-northeast.

Recent reverse circulation (RC) drilling south of the existing resource has intercepted further gold-bearing zones, indicating extension potential beyond the defined limits. Notably, one standout drill intercept returned 8 metres at 8.57g/t gold from a depth of 92 metres, including 3 metres at 19.57g/t from 94 metres. These results extend known mineralisation by at least 85 metres to the south, with more drill fences already planned to further test the strike length and depth continuity.

According to company updates, the simple tabular geometry and near-surface nature of the mineralisation—especially in the northern sections—add to the deposit’s potential for early-stage development and cashflow generation. The company remains focused on methodical, step-out drilling to continue expanding the deposit, with the next phase set to include deeper holes.

Fieldwork related to mining approvals is scheduled to commence in July, signaling a move toward development readiness. Meanwhile, a Scoping Study for Ironbark is currently in progress and is expected to be released shortly, outlining potential development scenarios and project economics.

Assays from the remaining drillholes of the recent program are anticipated within two weeks, with a sixth hole planned once the drilling rig returns to site. These results will feed into updated geological models and future resource estimations.

The broader Side Well Gold Project, located in the Murchison Goldfields, has a total resource of 668,000 ounces at 2.8g/t gold, making it a significant asset in Western Australia’s gold exploration landscape.

Great Boulder Resources (GBR) continues to advance its Western Australian portfolio, positioning Ironbark as a key contributor to its future development pipeline.

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