• GreenTech Metals has completed the first diamond drill hole to 810.2m at its Osborne JV with Artemis Resources
  • Sampling at the project previously returned up to 3.63% Li2O
  • Follow up RC drilling planned for Q1 2024


Special Report: GreenTech Metals is on the hunt for lithium pegmatites in maiden diamond drilling at the Osborne JV in WA with Artemis Resources (ASX:ARV), with the first hole completed to a depth of 810.2m. 

The project sits to the east and adjoins the company’s Ruth Well nickel-copper project, and is next door to Azure Minerals’ (ASX:AZS) monster Andover lithium discovery.

Exploration work to date has confirmed lithium mineralisation at the Kobe prospect over a strike length of more than 7.5km and has highlighted the potential for a whole new mineralised trend, separate to Kobe, through recent high-grade rock chip samples.

These rock chip samples returned assay results of up to 3.63% Li2O on the so called ‘Southern LCT’ pegmatite zone, which comprises a total combined 4km of strike.

GreenTech Metals (ASX:GRE) has now completed the initial drill hole at the project to test down dip structural controls of the previously identified surface outcropping lithium pegmatites.


Multiple zones of stacked pegmatites

Initial observations from the first drill hole:

  • Multiple zones of north dipping stacked pegmatites have been identified down dip of Wally and Osborne;
  • Individual pegmatite drill hole intersection widths range up to 24.6m;
  • A zone at least 57m wide comprising a series of closely stacked pegmatites has been intersected below 753m depth;
  • Preliminary interpretation suggests the Osborne pegmatite outcrop zone extends from surface down dip for at least 550m; and
  • Hole terminated within a pegmatite zone at 810.20m indicating the system remains open at depth.

“We are pleased that our drilling program is on track and that preliminary drill core observations, coupled with the surface rock chip Li2O grades and the scale of the Kobe and Osborne zones, support our view that this is a large lithium mineralising event,” GRE executive director Thomas Reddicliffe said.

Detailed logging and sampling has commenced with samples to be submitted for analysis this week.


GreenTech Metals ASX GRE
Drill core from Osborne on display. Pic via GreenTech Metals


Maiden drilling continues

The company has commenced a second diamond drill hole in the Southern Pegmatite Zone designed to test a thicker part of the Wally trend approximately 350m east of the maiden drill hole.


GreenTech Metals ASX GRE
Drilling schematic cross section. Pic via GreenTech Metals


GRE also aims to complete two stratigraphic diamond drill holes on the Kobe Zone as part of this maiden program.

A follow-up RC drill program is anticipated to commence in the first quarter of 2024.

“We are continuing with the current exploratory drill hole program along with the testing of mineralised zones when intersected which we expect to be completed this year,” Reddicliffe said.

“The commencement of a targeted and more detailed program of drilling within the broader Osborne and Kobe zones will be in the new year following the receipt and analysis of results from this current program.”



This article was developed in collaboration with GreenTech Metals, a Stockhead advertiser at the time of publishing.


This article does not constitute financial product advice. You should consider obtaining independent advice before making any financial decisions.