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Great Boulder Resources identifies more strong conductors ahead of drilling

Drilling is expected to commence on Mt Venn in the first week of July.

Ground-based moving loop electromagnetic survey
Ground-based moving loop electromagnetic survey

Great Boulder Resources Ltd’s (ASX:GBR) electromagnetic survey at its Mt Venn copper-nickel-cobalt project in Western Australia has identified more strong conductors within the Eastern Mafic complex, taking the total to more than 30.

Many of these conductors are large and shallow, occurring between 50 metres and 120 metres below surface, modelled down to a depth of 300-350 metres and exhibit a strong response consistent with a massive sulphide source.

READ: Great Boulder Resources identifies 12 new conductors ahead of maiden drill program

Subtle variations in conductor strength, magnetic, gravity and geochemistry results suggest variations in the formation of the intrusion and sulphide mineralogy.

This is evident in the recent 200 metre loop survey that identified a large continuous conductor over 600 metres in length, suggesting many of the discrete conductors may also be connected at depth.

Of particular note is the intersection of the eastern shear zone with the core of the intrusion, where some of the strongest conductor plates have been modelled with coincident copper and nickel geochemistry.

The intersection of a mineralised feeder structure into the neck of the intrusion is considered a primary target for massive nickel sulphide mineralisation.

Planning for the maiden drill program is now well advanced and will be adjusted as further electromagnetic results are received.

Given the large number of conductors already identified, the drill program has been expanded to 6,500-7,000 metres at the Eastern Mafic plus an additional 2,000- 3,000 metres at Mt Venn.

READ: Great Boulder Resources to accelerate drilling at Mt Venn Copper-Nickel-Cobalt Project after raising $2.5 million

Drilling is expected to commence on Mt Venn in the first week of July, expanding the copper-nickel-cobalt mineralisation already identified.

On completion of the expanded electromagnetic survey and Heritage survey, drilling will move to the Eastern Mafic, initially with a reverse circulation drill rig and joined shortly after with a diamond drill rig to test the deeper targets.

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