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Great Boulder Resources gets ready to find out real potential of Eastern Mafic complex

Evidence is building for a nickel-copper-cobalt massive sulphide system at the Eastern Mafic complex.

helicopter flying survey
The survey identified multiple conductors over a 6-kilometre strike length

Great Boulder Resources Ltd (ASX:GBR) has received electromagnetic (EM) survey results at the Eastern Mafic complex within the Mt Venn copper-nickel-cobalt project in Western Australia.

Significantly, the survey identified multiple high-priority targets conductors at the Eastern Mafic complex, which is nearby to the Mt Venn discovery.

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Great Boulder’s managing director Stefan Murphy said: “These results reveal an exceptionally large number of strong late-time conductors which show the Eastern Mafic complex has the potential to host significant massive sulphide mineralisation.

“We have now identified over 25 discrete, late-time conductors located in a part of the intrusion previously identified as having elevated copper, nickel and cobalt.

“This geochemical anomalism has been confirmed with preliminary XRF field assays, extending the copper-nickel-cobalt footprint to over 4km in the core of the intrusion and even further along the eastern shear zone.”

Ground survey to begin ahead of RC drilling

A detailed ground moving loop electromagnetic (MLEM) survey will now commence on the strongest conductors within the Eastern Mafic complex.

Great Boulder is also awaiting results from the recently completed 226-hole aircore drilling program over the Eastern Mafi complex.

Notably, preliminary XRF analysis of aircore drilling samples has demonstrated anomalous copper and nickel coincident with the airborne EM conductors.

Aircore assays and MLEM results will be used to plan priority reverse circulation (RC) drill targets.

READ: Great Boulder Resources extending mineralisation with phase III drilling

Mineralisation at Mt Venn, which remains open in every direction, is copper dominant and indicative of late-stage formation within the intrusion.

The Eastern Mafic complex was targeted because its geochemical signature suggested an earlier stage of formation.

This means it is potentially closer to the source of the intrusion and therefore prospective for massive sulphide mineralisation.

Quick facts: Great Boulder Resources Ltd

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