The planned drilling comes after the company recently completed a revised geological interpretation based on the latest drilling and geophysical results.
The deeper drilling is aimed at testing the core of the Eastern Mafic intrusion, where the conduit system and primary target for high-grade nickel sulphide is interpreted to be located.
Drilling is expected to commence early in the new year after site clearances and permits are received.
READ: Great Boulder Resources gains further evidence of Eastern Mafic potential, adds PGEs to the mix
In addition to testing the deeper targets, near-surface extensions of mineralisation will also be tested to determine the potential for open pit mineralisation at the Eastern Mafic.
This would complement shallow sulphide mineralisation at the adjacent Mt Venn deposit.
Shallow drilling will further explore the extent of sulphides intersected at the Zermatt and Cortina prospects.
Great Boulder’s flagship project is the 75% owned Yamarna Project located northeast of Laverton in Western Australia.
Yamarna comprises the more advanced Mt Venn nickel-copper-cobalt discovery and the adjacent emerging Eastern Mafic copper-nickel-cobalt deposits.
The maiden 30-hole reverse circulation (RC) drill program at Eastern Mafic recently confirmed a new magmatic sulphide system.
The Mt Venn and Eastern Mafic Complex are interpreted to represent large-scale copper-nickel-cobalt magmatic systems.