Great Boulder keeps rolling across Ironbark Corridor 

Great Boulder Resources (ASX:GBR) has in March 2024 scheduled drilling to resume at the Saltbush prospect and other targets along the Ironbark Corridor, as part of its flagship Side Well Gold Project in Western Australia.  

The $35.92 million market capitalisation company says the next phase of drilling will include additional AC and RC drilling at Saltbush, a small program of AC holes testing the new target north of Saltbush and a series of lines testing the broad pathfinder anomalies north of Ironbark. 

The company is compiling geological mapping from Side Well down to Polelle in preparation for extending and infilling auger soils coverage over the whole area. This will enable Great Boulder to complete a holistic geochemical analysis of all target opportunities. 

Given the strength of mineralised indicators at the southern end of the Ironbark corridor the company considers these southern tenements to be ‘highly prospective’ and relatively under-explored.

Great Boulder says drilling will resume after it announced today (26 February 2024) that a ‘significant, large-scale’ mineralised system exists within the Ironbark Corridor. 

Early stage exploration, comprising aircore drilling, has intersected gold north and south of Saltbush, extending mineralisation for more than 300m and remaining open in both directions. 

According to Great Boulder, Saltbush continues to show similarities to the nearby Ironbark deposit, which houses a 100,000 ounce gold resource at an average grade of 3.3 grams per tonne (g/t). 

Further, a priority target has been flagged northeast of Saltbush which demonstrates ‘extremely high’ pathfinder anomalism. Rock chip samples from a 100m-long zone of gossanous and strongly laminated quartz veins have returned assays up to 0.6g/t Au and 81g/t Ag with ‘extremely’ high pathfinder elements supported by recent AC drilling along strike.

Managing Director Andrew Paterson says the company’s early stage exploration within the Ironbark Corridor is “very exciting” as it begins to “fill in the gaps”.   

“Firstly, aircore drilling has extended the known gold mineralisation at Saltbush along strike in both directions. These results will be followed up in the next drill campaign starting in March.

Secondly we’ve identified a new target 400m away with extremely high levels of Mulga Bill-style pathfinder elements. The surface outcrop is a zone of gossanous alteration with strongly laminated quartz veins. 

The peak bismuth value is approximately ten times higher than anything we’ve seen at Side Well before, with elevated gold, silver, molybdenum and copper which are characteristic of Mulga Bill. This suggests we have both styles of mineralisation within the Ironbark corridor target area which is an exciting development.

We’ll be drilling both areas during March and I look forward to reporting the results as soon as possible.”

Great Boulder is currently compiling geological mapping from Side Well down to Polelle in preparation for extending and infilling auger soils coverage over the whole area. 

Great Boulder Resources is a mineral explorer with a portfolio of ‘highly prospective’ gold and base metals assets in Western Australia ranging from greenfields through to advanced exploration. 

The company’s Side Well Project sits near the township of Meekatharra in the Murchison Goldfield, where exploration has defined a mineral resource of 7.45 million tonnes at 2.8g/t Au for 668,000 ounces of gold. 

As of December 2023, Great Boulder Resources had $5.035 million cash and cash equivalents at hand, according to its latest quarterly report. 

Write to Adam Drought at Mining.com.au

Images: Great Boulder Resources
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Written By Adam Drought
Born and raised in the UK, Adam is a sports fanatic with an interest in Rugby League and UFC/MMA. When not training in Muay Thai and Brazilian Jiu Jitsu, Adam attends Griffith University where he is completing his final year of a Communication & Journalism degree.